ONC03 - Master LT 500-1600 GRT

INLAND ONLY Which term is NOT defined in the Inland Navigation Rules?

Where would you find a list of the lifesaving equipment onboard your supply boat?

Angular motion about the vertical axis of a vessel refers to which term?

Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 24.2 feet, and the dr...

Which is TRUE concerning Spring tides?

Which ocean current is "warm" based on the latitude in which it originates and on the effect it has on climate?

The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high (11.0 meters). If the visibil...

If the pitch of the propeller is 19.4 feet, and the revolutions per day are 96,713, calculate the day's run allowing 6%...

Determine the great circle distance and initial course from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36...

As a general rule, how will your vessel lie when it is drifting in a locale where there is no current?

Your sailing drafts are: FWD 21'-08", AFT 22'-04" and the GM is 3.2 feet. What will be the angle of list if the #6 port...

What is the main advantage and chief characteristic of a Steulchen boom?

What is the displacement of a barge which measures 85' x 46' x 13' and is floating in salt water with a draft of ten fe...

At 0915 zone time on 6 March you depart Sydney, LAT 33°51.5'S, LONG 151°13.0'E (ZD -10). You are bound for Kodiak, LAT ...

Determine the great circle distance and initial course from LAT 34°51.0'N, LONG 115°01.2'E to LAT 10°16.0'S, LONG 51°42...

INLAND ONLY Which of the following may be displayed by a law enforcement boat?

The terminology "able to understand any order spoken by the officers" refers to all of the following situations EXCEPT ...

If your vessel is aground at the bow, it would be preferable that any weight removals be made from which area(s) of the...

Which term is given to the upward slope of a vessels bottom from the keel to the bilge?

You wish to make good a course of 300°T while turning for an engine speed of 11 knots. The set is 350°T, and the drift ...

If a weather bulletin shows the center of a low-pressure system to be 100 miles due east of you, what winds can you exp...

The following questions are to be answered using Chart 13205 TR, Block Island Sound, and supporting publications. Yo...

A vessel steams 1650 miles on course 077°T from LAT 12°47'N, LONG 45°10'E. What is the latitude and longitude of the po...

On 7 November your 0830 zone time fix gives you a position of LAT 27°36.0'N, LONG 163°19.0'W. Your vessel is on course ...

In relation to the turning circle of a ship, which describes the term "kick"?

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 20'-04", AFT 23'-06". After all bunkers are on board, sou...

Which is the national distress, safety, and calling frequency channel?

The sailing drafts are: FWD 23'-02", AFT 24'-06" and the GM is 2.8 feet. Use the information in Section 1, the blue pag...

If the speed necessary for reaching port at a designated time is 12.6 knots and the pitch of the propeller is 13.6 feet...

The distance between any two meridians measured along a parallel of latitude and expressed in miles is the __________.

INLAND ONLY Which of the following is indicated by a vessel displaying a flashing blue light?

What is the minimum number of bolts required in a temporarily connected standard ANSI (American National Standards Inst...

How can you recognize the necessity for administering artificial respiration?

Your drafts are: FWD 23'-03", AFT 27'-01". Use the blue pages of the Stability Data Reference Book to determine the ves...

Your vessel is on course 093°T at 15 knots. At 1835 a light bears 136°T, and at 1857 the same light bears 170°T. What w...

Which is TRUE concerning a first magnitude star?

If there is no set or drift, at what time would you be abeam of Bartlett Reef Light?

You are taking a time tick using the 2000 signal from Kekaha-Kauai, Hawaii (WWVH). You hear a series of 1 second dashes...

On 28 February your 1850 zone time DR position is LAT 27°49.0'N, LONG 159°24.0'W. Considering their magnitude, azimuth,...

The Officers Competency Certificates Convention of 1936 applies to all of these vessels operating seaward of the bounda...

Your vessel has a beam of 40 feet, and you observe a still water rolling period of 20 seconds. What is the vessel's met...

You are loading 530,000 barrels of cargo oil. At 0945 on 13 April, you find that you have loaded 202,000 barrels. At 11...

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 14'-04", AFT 17'-06". After all bunkers are on board, sou...

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The vari...

Determine the distance from LAT 19°54.0'N, LONG 166°36.0'E to LAT 19°54.0'N, LONG 157°54.0'W, by parallel sailing.

BOTH INTERNATIONAL & INLAND By definition which vessel is unable to keep out of the way of another vessel?

As the propeller turns, voids are formed on the trailing and leading edges of the propeller blades causing a loss of pr...

The service use of pyrotechnic distress signals measured from the date of manufacture shall be limited to which period ...

Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle fo...

Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indic...

The velocity of the wind, its steady direction, and the amount of time it has blown determines what about a wind driven...

At 1718, Bartlett Reef Light bears 050°T at a distance of 1.5 miles. From this position, you change course to 128°T. At...

On 11 May in DR position LAT 28°13.7'N, LONG 168°36.3'E, you observe an amplitude of the Sun. The Sun's center is on th...

Your vessel is steering course 027° per standard magnetic compass (psc), variation for the area is 19°W, and deviation ...

For towing vessels over 100 gross tons that are permitted to maintain a two-watch system, what percentage of the deck c...

Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle fo...

SOLAS requires that all passenger vessels maintain Muster Lists. What information is required to be contained in this d...

At all angles of inclination, which is the true measure of a vessel's stability?

You depart LAT 33°45.0'N, LONG 118°30.0'W, and steam 2216 miles on course 250°T. What is the longitude of your arrival ...

In high latitudes, celestial observations can be made over a horizon covered with pack ice by bringing the sun tangent ...

BOTH INTERNATIONAL & INLAND A vessel that is defined as "restricted in her ability to maneuver" is unable to keep out o...

You are bound from port A, governed by the summer load line mark, to port B, also governed by the summer mark. The grea...

The most detrimental effect on initial stability is a result of liquids __________.

Your sailing drafts are: FWD 19'-06", AFT 20'-10" and the GM is 3.3 feet. What will be the angle of list if the #2 star...

Which would you expect to see on a lighted preferred-channel buoy?

Which correction must be applied to an aneroid barometer reading?

If your fathometer is set on fathoms, what should your fathometer read at 1750?

On 9 November 2023 at 1130, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit...

On 13 February at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of ...

In the United States, which organization sets the load line markings?

Your drafts are: FWD 24'-09", AFT 27'-02". Use the blue pages of the Stability Data Reference Book to determine the ves...

What should be given, as a minimum, to personnel who are involved in crane cargo handling?

The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0143 below. Use the white pages of The Stability Dat...

You are on course 251°pgc and 241° per magnetic compass, when you observe a range in line bearing 192°pgc. The chart in...

You observe the lower limb of the Sun at a sextant altitude (hs) of 34°51.4' on 18 October. The index error is 2.0' off...

INTERNATIONAL ONLY You intend to overtake a vessel in a narrow channel on its port side. The vessel to be overtaken has...

What is the minimum number of bolts required in a permanently connected flange oil hose coupling?

When should you first have any food or water after boarding a lifeboat or liferaft?

The sailing drafts are: FWD 23'-02", AFT 24'-06" and the GM is 2.8 feet. Use the information in Section 1, the blue pag...

Which statement is TRUE for an unlighted, red and green, horizontally-banded buoy with the topmost band red?

What do chart legends printed in capital letters indicate about the associated landmark?

At 1756 you determined your vessel's position to be 41°10.4'N, 71°59.2'W. From this position, you wish to change course...

You are on a voyage from San Diego, CA to New York, NY. The distance from pilot to pilot is 4860 miles. The speed of ad...

For navigational purposes, each great circle on the Earth has a length of __________.

What is the primary use of antiseptics?

You have 590 tons of below deck tonnage. There is no liquid mud aboard. If you have 84 tons of cargo above deck with a ...

Your twin-screw vessel is moving ASTERN with rudders amidships. The starboard screw suddenly stops turning. How will yo...

Your vessel measures 122 feet long by 18 feet in beam. If the natural rolling period at a draft of 6'-09" is 5 seconds,...

Which of the following is the most accurate method of determining gyrocompass error while underway?

On 17 May your 0300 ZT DR position is LAT 27°21.0'N, LONG 146°14.0'E. You are on course 107°T at a speed of 18 knots. W...

INTERNATIONAL ONLY You are operating a vessel in a narrow channel. Your vessel must stay within the channel to be navig...

A condition where two currents meet at the downstream end of a middle bar can be determined by observing which situation...

How are fusible link fire dampers operated?

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT 15'-01". After all bunkers are on board, sou...

When operated over a muddy bottom, a fathometer may indicate which of the following?

You are radar scanning for a buoy fitted with a racon. In illustration D017NG below, which radar screen represents the ...

At 1844 Watch Hill Point bears 323°T and Block Island North Light bears 084°T. Which statement is TRUE?

On 4 October 2023, you will be docking at Redwood Marine Terminal in Eureka, CA at the first high tide. The berth is lo...

You are planning a voyage by great circle to Reykjavik, Iceland, via Cape Race, Newfoundland, LAT 46°30'N, LONG 53°00'W...

A vessel proceeding to London, England, from New York makes an unscheduled call at the port of Hamilton, Bermuda. What ...

You are on a Mariner class cargo vessel. Your drafts are: FWD 21'-04", AFT 23'-04". You wish to increase the calculated...

Shipping articles are a contract of agreement between the members of the crew and who else?

Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle fo...

You are turning 90 RPM, with a propeller pitch of 24 feet, and an estimated slip of -3%. What is the speed of advance?

On 8 April your evening DR position is LAT 22°16.0' N, LONG 157°58.3' W. You observe an unidentified star bearing 238°T...

BOTH INTERNATIONAL & INLAND In which situation do the Rules require both vessels to change course?

A credential for apprentice mate (steersman) of towing vessels shall be renewed within what time period before or after ...

Lifesaving regulations in Subchapter W require that a fire drill include which of the following?

Your vessel measures 122 feet long by 18 feet in beam. If the natural rolling period at a draft of 6'-09" is 5 seconds,...

What kind of pressure systems travel in tropical waves?

When making landfall at night, how can you determine if a light is a major light or an offshore buoy?

From your 1850 position of 41°12.8'N, 71°44.1'W, you change course to 060°T. If you make the course good, what will be ...

You have steamed 174 miles and consumed 18.0 tons of fuel. If you maintain the same speed, how many tons of fuel will y...

On 10 July your 0930 zone time DR position is LAT 26°31.0'S, LONG 4°41.0'E. Your vessel is on course 308°T at a speed o...

The S.S. Hollowpoint has a charter party in which the charterer assumes no responsibility for the operation of the vess...

Which is the primary type of welding employed in shipyards in the construction of cargo vessels?

Your cargo vessel is transiting pirate waters with a temporary security team onboard. The ship has been attacked and st...

You have 520 tons of below deck tonnage. There is no liquid mud. If you have 160 tons of cargo above deck with a VCG ab...

While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if yo...

The difference of latitude (l) between the geographic position (GP) of a celestial body and your position, at the time ...

BOTH INTERNATIONAL & INLAND When two power-driven vessels are meeting head-on and there is a risk of collision, which a...

When does the Master of a vessel tender a Notice of Readiness to the charterer?

When a vessel is stationary and in a hogging condition, the main deck is under which type of stress?

The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0078 below. Use the white pages of The Stabilit...

Swell is the rise and fall of the ocean's surface due to __________.

The ARPA may swap targets when automatically tracking if two targets are in which situation?

You are making good a course of 060°T at a speed of 13.5 knots. At 1855 Block Island North Light bears 086°T; at 1910 B...

The true course between two points is 057°. Your gyrocompass has an error of 3° east and you make an allowance of 1° le...

On 2 October your 1845 DR position was LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the c...

The American Consul has asked the Master of a vessel bound for a port in the U.S. to transport a destitute seaman back ...

You are loading in a port subject to the summer load line mark and bound for a port subject to the tropical load line ma...

Who is responsible for the revision of muster lists?

You are loading in a port subject to the winter load line mark and bound for a port subject to the tropical load line ma...

If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obt...

On 3 February your 0451 zone time DR position is LAT 24°15.0'S, LONG 124°24.0'W. Considering their magnitude, azimuth a...

BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown in illustration D017RR below. Vessel "B" shoul...

Which term defines when a boat turns broadside to heavy seas and winds, thus exposing the boat to the danger of capsizin...

Angular motion about the longitudinal axis of a vessel is known by which term?

You have 590 tons of below deck tonnage. There is no liquid mud aboard. If you have 84 tons of cargo above deck with a V...

The depth of the water is indicated on a chart as 32 meters. What is this equal to?

You are on course 238°T. To check the course of your vessel you should observe a celestial body on which bearing?

At 1942 Point Judith bears 030°T and has a range of 3.6 miles and Sandy Point has a range of 5.3 miles. What was your s...

On 5 June your 0420 zone time DR position is LAT 26°47.0' N, LONG 133°19.5' W. At that time, you observe Vega bearing 29...

A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by mi...

You have abandoned your vessel and are the person in charge of lifeboat No. 2. Which procedure should be followed when ...

Your vessel's drafts are: FWD 23'-01", AFT 24'-05"; and the KG is 22.8 feet. Use the selected stability curves in the bl...

Deckhands onboard towing vessels shall be divided into 3 watches when on a trip exceeding what length?

Your sailing drafts are: FWD 14'-04", AFT 16'-02" and the GM is 3.0 feet. What will be the angle of list if #5 port doub...

You have steamed 803 miles at 13 knots and consumed 179 tons of fuel. If you have 371 tons of usable fuel remaining, ho...

What is a nonadjustable error of the sextant?

BOTH INTERNATIONAL & INLAND Which is TRUE of a power-driven stand-on vessel?

When picking up your mooring at the buoy, which is the correct method?

Which defines the "flammable limits" of an atmosphere?

Ocean swells originating from a typhoon can move ahead of it at speeds near __________.

Steam fog will occur when which conditions exists?

You observe the lower limb of the Sun at a sextant altitude (hs) of 41°29.8' on 11 January. The index error is 2.4' off...

Your vessel is damaged and listing to port. The rolling period is long, and the vessel will occasionally assume a starb...

Which action should you take after sending a false distress alert on VHF?

For navigational purposes, each great circle on the Earth has a length of __________.

BOTH INTERNATIONAL & INLAND You hear the fog signal of another vessel forward of your beam. Risk of collision may exist...

If a hydraulic pump on a winch accidentally stops while hoisting, the load will stay suspended because __________.

According to the Lifesaving regulations in Subchapter W, fire and abandon ship drills must be held within 24 hours of l...

Before a magnetic compass is adjusted certain correctors must be checked to ensure that they are free of permanent magn...

The Light List indicates that a dayboard is a type TR-SY. Which action should you take?

On September 9 your 2130 zone time (ZD +5) DR position is LAT 45°08'N, LONG 82°38'W. At that time, you observe Polaris ...

You are signing on a crew. You can determine the minimum number and qualifications of the crew that you are required to...

What speed do most bow thrusters generally become ineffective?

On 2 April your 0900 zone time DR position is LAT 28°04.0'S, LONG 94°14.0'E. Your vessel is on course 316°T at a speed ...

BOTH INTERNATIONAL & INLAND You are underway in heavy fog. You hear the fog signal of a vessel which is somewhere ahead...

In safety and risk assessment, what two factors are used to evaluate a hazard's risk?

Which of the following is a treatment of frostbite?

Which is TRUE of Raster-scan chart data?

Which is TRUE when navigating a vessel?

On 14 March at 1845 ZT, you take a sextant observation of Polaris. Your DR position is LAT 29°10'N, LONG 154°30'W, and ...

What is the placement requirement for the number or name of a tank barge?

You are approaching the pilot station with the wind fine on the starboard bow and making about 3 knots. You can help to...

On 20 November your 1030 ZT DR position is LAT 27°16.0'N, LONG 157°18.6'E. You are on course 060°T at a speed of 20 kno...

BOTH INTERNATIONAL & INLAND You are underway in restricted visibility. You hear the fog signal of another vessel about ...

While proceeding up a narrow waterway you observe a vessel berthed in the river with slack mooring lines. Which is the ...

What is a wobbling tail shaft an indication of?

Aneroid barometers are usually calibrated to indicate atmospheric pressure in which units?

A great circle crosses the equator at 141°E. It will also cross the equator at what other longitude?

On 20 November your 1030 ZT DR position is LAT 27°16.0'N, LONG 157°18.6'E. You are on course 060°T at a speed of 20 kno...

Where can the deepest water when rounding a bend in a river be located?

Your passenger vessel is 130 feet (40 m) long and is alternatively equipped for operating in river service. How many li...

On 7 November your 0830 zone time fix gives you a position of LAT 27°36.0'N, LONG 163°19.0'W. Your vessel is on course ...

BOTH INTERNATIONAL & INLAND Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of on...

Your ship has loaded 20,000 barrels of crude oil, departing Valdez, Alaska for San Francisco. When loaded the cargo tem...

A wooden plug fitted tightly in the vent of a damaged tank may prevent which situation?

By what means are indications of the master gyrocompass sent to remote repeaters?

The direction in which a vessel is steered is the course. The path actually followed is the __________.

On 15 November your 1030 ZT DR position is LAT 17°25'S, LONG 42°12'W. You are on course 059°T, speed 22 knots. Determin...

Addition of weight to a vessel will ALWAYS __________.

Which term defines "An electronic or electric device that indicates the rate of turn of a vessel"?

On 29 July your 1930 zone time DR position is LONG 164°26.0'E. At that time you observe Polaris with a sextant altitude...

BOTH INTERNATIONAL & INLAND The steering and sailing rules for vessels in restricted visibility apply to vessels ______...

If you are bunkering and you close off one tank in the line of tanks being filled, what happens to the rate of flow to ...

What is the operating principal of a flash type evaporator?

How are aids to navigation marking the intracoastal waterway (ICW) identified?

While steering a course of 150°T, you wish to observe the Sun for a speed check. What would the azimuth have to be?

The Immigration and Naturalization Service is concerned with which document on a vessel making preliminary entry into a...

Which defines the term reserve buoyancy?

INTERNATIONAL ONLY Which light(s) shall a single vessel being towed alongside show?

To determine the weight capacity of a deck in a cargo hold, which reference would you refer to?

Which is TRUE when operating the air supply system in a covered lifeboat?

Information about currents around Pacific Coast ports of the U.S. can be obtained in which publication?

What is NOT an advantage of the rhumb line track over a great circle track?

When taking a Pilot from a pilot vessel in a seaway, which way should you head your vessel if the ladder is on the leew...

What does item "D" refer to in illustration D045DG of a 30-ton pedestal crane?

INTERNATIONAL ONLY You have sighted three red lights in a vertical line on another vessel dead ahead at night. Which ve...

U.S. regulations require any tankship making a voyage of over 48 hours duration to conduct certain tests not more than ...

Fires are grouped into what categories?

A safe water daymark has what shape?

Given are the courses and speeds of 4 vessels. The navigator of which vessel would be required to know the actual time ...

Under U.S. law, what is the penalty for assaulting the Master?

Which is a major advantage of the round turn maneuver in a man overboard situation?

BOTH INTERNATIONAL & INLAND In which situation would risk of collision definitely exist?

Which describes how flanking rudders effect a vessel's heading when going astern?

What would a yellow signal floating in the air from a small parachute, about 300 feet above the water indicate about a ...

Your vessel is steering course 299°psc, variation for the area is 7°W, and deviation is 4°W. The wind is from the south...

The error in a sextant altitude caused by refraction is greatest when the celestial body is in which location?

If an alien stowaway is discovered aboard your vessel, which action should you take?

Due to the nature of a vessel's construction for a particular trade, it does not fully comply with the provisions of SO...

BOTH INTERNATIONAL & INLAND You are on Vessel "A" engaged in fishing in a narrow channel as shown in illustration D037R...

Fire hose stations shall be marked in red letters and figures such as Fire Station No. "1", "2", "3", etc. Which is the...

Your vessel is damaged and on an even keel. There is no trim. The freeboard is reduced to less than 1 foot. The rolling...

In which months will the North Equatorial Countercurrent be strongest?

Which is TRUE for the directive force acting on a gyrocompass?

You are loading in a port governed by the tropical load line mark for a voyage to a port governed by the winter mark. T...

When a vessel with a single right-hand propeller backs to port which statement is TRUE?

BOTH INTERNATIONAL & INLAND When in sight of another vessel and there is sufficient sea room, any action taken to avoid...

A U.S. or foreign flag vessel that does not comply with the Officers Competency Certificates Convention of 1936 may be ...

What is the calling and distress frequency on a single side band (SSB) marine radiotelephone?

Which is TRUE for the directive force acting on a gyrocompass?

Which publication would describe the explosive anchorages in the ports on the east coast of the United States?

A vessel aground may have negative GM since the __________.

What is the period of validity of the SOLAS required Cargo Ship Safety Construction Certificate?

BOTH INTERNATIONAL & INLAND A traffic separation zone is that part of a traffic separation scheme which __________.

A tug placed at which location would have MINIMAL effect steering a large vessel?

When attempting to enter a compartment containing a fire, which method of applying water is best?

What does the symbol shown in illustration D033NG below indicate on a chart?

Which statement about a gnomonic chart is correct?

Normally, your vessel is on a voyage of three months duration. How many sanitary inspections are required to be conduct...

What does the signal "AS", when used in signaling by the International Code of Signals mean?

BOTH INTERNATIONAL & INLAND When do the Rules state that risk of collision shall be deemed to exist?

For towing vessels over 100 gross tons that are permitted to maintain a two-watch system, what percentage of the deck c...

Enclosed lifeboats which have been afloat over a long period of time require __________.

Temperature and moisture characteristics are modified in a warm or cold air mass due to which factor?

Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact ...

Your vessel is required to have a slop chest. Which of the following articles is NOT required by law to be carried in t...

Which agency must approve the safety equipment on board inspected vessels?

INTERNATIONAL ONLY A wing in ground (WIG) craft cannot comply with the spacing requirement for masthead lights. What is...

Once a vessel has loaded packaged hazardous cargo, the cargo spaces shall be inspected. The spaces shall also be inspec...

The single turn method of returning to a man overboard should be used ONLY if which condition exists?

Which statement about a gnomonic chart is correct?

Where can complete information on weather broadcasts throughout the world be found?

You are on a 120,000 DWT loaded bulk carrier. What is a safe docking speed when approaching a berth?

Your vessel has just run aground. Which of the following would be one of the first actions you should take in this situ...

INLAND ONLY The masthead light may be located at other than the fore and aft centerline on which power- driven vessel?

The transfer procedures required to be followed on tankships shall contain which item?

You are attempting to take a dead ship in tow. All lines have been passed and secured. How should you get underway?

In the North Sea area, you sight a buoy with a quick light showing 3 flashes every 10 seconds. Which topmark in illustr...

You take a bearing of 043° and 169° of two objects. What bearing of a third object will give the best fix?

You have steamed 632 miles at 18.5 knots and consumed 197 tons of fuel. If you have 278 tons of usable fuel remaining, ...

You are Master of a vessel that is sold in a foreign country after discharge of cargo. What is your responsibility to t...

INLAND ONLY Which statement is TRUE concerning lighting requirements for Great Lakes vessels?

According to Pollution Prevention Regulations (33CFR), who is required to sign each completed page in the Oil Record Bo...

Where there are multiple accident victims, which type of injury should be the first to receive emergency treatment?

To measure distance on a Mercator chart between the parallels of LAT 34°30'N and LAT 31°30'N, which 30- mile scale shoul...

The distance between any two meridians measured along a parallel of latitude and expressed in miles is the __________.

When launching a lifeboat, when should frapping lines be rigged?

The single turn method of returning to a man overboard should be used ONLY if which condition exists?

INLAND ONLY A power-driven vessel when pushing ahead or towing alongside on the Western Rivers (above the Huey P. Long ...

When several salvors are on-scene at the same time to assist a vessel that has not been abandoned, which principal gove...

Why should all electrical appliances aboard a vessel be grounded and ground fault protected?

What is the purpose of the "reference hand" on an aneroid barometer?

Which is a characteristic of anticyclones?

You are docking a vessel. Which statement is TRUE?

Your vessel is issued a load line certificate dated 27 May 1992. Which is an acceptable date for one of the surveys for...

INLAND ONLY Vessels "A" and "B" are meeting on a river as shown in illustration D041RR below and will pass 1/4 mile apa...

Which signal must you display at night on a docked tank barge to show that it is loading or discharging flammable liqui...

You are having a Coast Guard inspection. Which is TRUE concerning all of the carbon dioxide fire extinguishers aboard?

How is an occluded front represented on a weather map?

By convention, the north pole of a magnet is painted which color?

When paying off seamen in a foreign port, where a United States consul is not available, the release must be executed b...

A tug should not come alongside a tank vessel in way of its cargo tanks while it is loading grade A, B, or C cargo with...

INLAND ONLY A barge more than 50 meters long is required to show how many white anchor lights when anchored in a Secret...

What is/are the advantage(s) of cranes over conventional cargo booms?

Which term is given to the difference between the starboard and port drafts caused by shifting a weight transversely in...

Mean lower low water is the reference plane used for which measurements?

Under the IALA-A Buoyage System, when entering from seaward which buoy as shown in illustration D046NG below, should be...

What is the period of validity of a De-Rat certificate?

Each distress signal and self-activated smoke signal must be replaced not later than the marked date of expiration, or ...

BOTH INTERNATIONAL & INLAND You see ONLY the light shown in illustration D080RR below. Which type of vessel are you obs...

The International Maritime Dangerous Goods Code assigns classes to dangerous goods. What is the proper nomenclature for...

VHF Channel 6 is used exclusively for what kind of communications?

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The vari...

The navigational triangle uses parts of two systems of coordinates, one of which is the celestial equator system, which...

When lowering lifeboats in heavy seas, a good practice is to rig frapping lines which way?

In an emergency, which can directly control the electro-hydraulic steering units on the vessel?

BOTH INTERNATIONAL & INLAND A vessel displaying the shape shown in illustration D010RR below is which of the following?

A vessel has a deadweight carrying capacity of 10,500 tons. Fuel, water, and stores require 1500 tons. The cubic capaci...

Which group would be used to send the signal Greenwich mean time 11:35 pm?

The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.

Which is the reference datum used in determining the heights of land features on most charts?

When you enter shallow water, which describes your vessel's rudder response and speed variations?

Annex V to MARPOL 73/78 contains requirements pertaining to the discharge into the marine environment of which item?

BOTH INTERNATIONAL & INLAND Which of the following describes a vessel exhibiting the lights shown in illustration D084R...

Who is responsible for establishing watches aboard a U.S. vessel?

Which is the best action to take when plugging holes below the waterline for the safety of the vessel?

Which item in illustration D034NG below shows a fixed and flashing light?

What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?

Steering a motor lifeboat broadside to the sea could cause it to __________.

What is the maximum length of time that distress flares are approved for?

BOTH INTERNATIONAL & INLAND The stern light shall be positioned such that it will show from dead astern to how many deg...

When taking a Pilot from a pilot vessel in a seaway, which way should you head your vessel if the ladder is on the leewa...

The danger of a charged hose left unattended on deck with the nozzle open is __________.

The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?

On what does the operation of an aneroid barometer depend?

Which of the following defines the difference between the free-floating displacement and the KB of a grounded vessel?

Which of the signals listed is required to be displayed during the day while bunkering?

BOTH INTERNATIONAL & INLAND Which is TRUE of a tugboat displaying the shape shown in illustration D010RR below?

You are using the anchor to steady the bow while maneuvering. When do you know you have the proper scope of anchor cable...

If a vessel is sagging, what kind of stress is placed on the sheer strake?

Which is TRUE of a dead reckoning (DR) plot?

When you are steering on a pair of range lights and find the upper light is in line above the lower light, you should t...

When should the lubricating oil be changed on a heavy-duty diesel engine?

A seaman may not make an allotment to which relation?

INLAND ONLY What signal is a power-driven vessel, when leaving a dock or berth, required to sound?

Which document is NOT required by law to be posted aboard a vessel?

Which is TRUE of the term negative slip on a vessel?

Which current is responsible for the movement of large quantities of ice into the North Atlantic shipping lanes?

When using GPS without Selective Availability, what can you expect your horizontal accuracy to be of the unit?

An International Tonnage Certificate will be issued to a vessel when it meets several requirements. Which is one of the...

What does the single letter G, sent by an icebreaker to an assisted vessel, mean?

INLAND ONLY You are underway in a narrow channel, and are being overtaken by another power-driven vessel. The overtakin...

A vessel arrives in the port of Los Angeles from a foreign port and discharges some of its inward foreign cargo. What ad...

In the absence of external forces, the center of gravity of a floating vessel is located directly in line with which it...

Steam fog will occur when which conditions exists?

Where can data relating to the direction and velocity of rotary tidal currents in a U.S. Atlantic Port be found?

What is NOT considered maritime property in a salvage claim?

Which statement about the use of portable electric lights in petroleum product tanks is TRUE?

INTERNATIONAL ONLY A vessel sounds two short blasts. What does this indicate?

You are on a large merchant vessel entering a U.S. port. There is a Pilot on board and he has the conn. Which statement...

Which is the prime function of the bilge keel?

You are plotting a running fix in an area where there is a determinable current. How should this current be treated in ...

A time diagram is a diagram of the celestial sphere as observed from above which location?

The number of certificated able seamen and lifeboatmen required on a vessel is determined by which organization?

Which item indicates the maximum draft to which a vessel can legally be submerged?

INTERNATIONAL ONLY Two power-driven vessels are meeting. What would a two-blast whistle signal by either vessel mean?

What can be used to prevent a flammable atmosphere from occurring in a tank container?

What is Metacentric height a measure of?

Where can information for updating paper nautical charts primarily be found?

Which of the following causes the development of an occluded front?

The Safety of Life at Sea Convention was developed by which organization?

What is the purpose of a check valve?

BOTH INTERNATIONAL & INLAND Which is the duration of each prolonged blast on whistle signals used by a power-driven ves...

The securing systems for containers were developed to prevent container movement during which ship motion?

You are on a ship that has broken down and are preparing to be taken in tow. You will use your anchor cable as part of ...

Which is the main factor that causes the deflection of the southeast trade winds?

You are steaming on a course of 084°T at a speed of 13 knots. At 1919 a lighthouse bears 106.5°T. At 1957 the same ligh...

The decision has been made to make landfall through a slight surf in an oar-propelled lifeboat. How should the sea anch...

Which is the easiest way to dock a right-hand, single-screw vessel?

BOTH INTERNATIONAL & INLAND What is the duration of each blast of the whistle signals used in head-on and/or crossing s...

Your vessel is loaded with nonhygroscopic cargoes and is going from a cold to a warm climate. Which action should you t...

Which defines the function of a spark arrestor?

The National Oceanic and Atmospheric Administration publishes which item?

On 5 July, at 1200 zone time, you cross the 180th meridian steaming westward. What is your local time?

What is the function of an air receiver in the compressed air system?

Flammable liquid means any liquid which gives off flammable vapors at or below __________.

BOTH INTERNATIONAL & INLAND Which of the signals, other than a distress signal, can be used by a vessel to attract atte...

Which statement is TRUE when an anchor is used to assist in turning the vessel in restricted waters?

Which term is given to the wooden planking that protects the tank top from cargo loading?

Which clouds are described as high clouds, composed of small white flakes or scaly globular masses, and often banded to...

The vertical distance from the tidal datum to the level of the water is the __________.

You are approaching the pilot station with the wind fine on the starboard bow and making about 3 knots. You can help to...

Your tankship is carrying a 30% solution of hydrogen peroxide. The cargo containment system must have a permanent inert...

BOTH INTERNATIONAL & INLAND What is the minimum sound signaling equipment required aboard a vessel 10 meters in length?

For insurance purposes, which is a requirement for a general average act?

When a helicopter is lifting personnel from an enclosed lifeboat, what should the other individuals in the boat do?

Which type of cloud is hail most likely to fall from?

Which is TRUE of the term coastal current?

Aboard damaged vessels, the MOST important consideration is preserving which item?

A motor lifeboat shall carry sufficient fuel to operate continuously for a period of which duration?

BOTH INTERNATIONAL & INLAND Which statement is TRUE regarding equipment for sound signals?

Which is supplied to the vessel by the U.S. Coast Guard?

Which is TRUE of the mechanical gearing of deck machinery such as the windlass or towing engines?

Which term is given to the mechanical lifting of air by the upslope slant of the terrain?

You swung ship and compared the magnetic compass against the gyrocompass to find deviation. Gyro error is 2°W. The vari...

You have determined the maneuvering characteristics of your vessel by taking radar ranges and bearings of an isolated l...

What is the proper stimulant for an unconscious person?

BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown in illustration D042RR below. Vessel "A" sou...

Your vessel is anchored in an open roadstead with three shots of chain out on the port anchor. The wind freshens consid...

Stability is determined principally by the location of the point of application of two forces: the downward-acting grav...

What do the numbers on isobars indicate?

The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course woul...

In most cases, when large tankers or bulk carriers enter shallow water at high speed which situation can be expected?

The American Consul has asked the Master of a vessel bound for a port in the U.S. to transport a destitute seaman back ...

BOTH INTERNATIONAL & INLAND A vessel nearing a bend where other vessels may be obscured is required to sound which sign...

Your vessel is broken down and rolling in heavy seas. How can you reduce the danger of capsizing?

Which portable fire extinguisher should be used on a class C fire on board a vessel?

On a working copy of a weather map, a cold front is represented by what color line?

As a warm front approaches how does barometric pressure change?

You are docking a vessel. When are the wind and current most favorable in this situation?

What is the minimum required protective clothing that must be worn while sampling hazardous cargo on a tankship?

BOTH INTERNATIONAL & INLAND Which vessel(s) is/are required to sound a fog signal of one prolonged followed by two short...

What is the period of validity of a Cargo Ship Safety Equipment Certificate?

Your vessel has run aground and is touching bottom for the first one-quarter of its length. What is the LEAST desirable...

You are enroute to assist vessel

The direction in which a vessel should be steered between two points is known by which term?

A ballasted vessel sinks enroute to a dry dock. Under these circumstances, the vessel's owner can claim which loss?

According to regulations when, if ever, may cargo hatches on Great Lakes vessels, with more than 6 feet of freeboard, b...

BOTH INTERNATIONAL & INLAND What is the required fog signal for a manned vessel being towed at night?

Muster Lists and emergency instructions are required for all SOLAS vessels. The muster list shall show the duties assig...

What condition will result in the automatic shutdown of a diesel engine?

Which statement is TRUE concerning apogean tides?

Which is TRUE of the dangerous semicircle of a hurricane in the Northern Hemisphere?

What is the most useful drug to reduce a high fever?

You are conducting trials to determine the maneuvering characteristics of your vessel. While making a turn, you take ra...

BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound which fog signal?

On stud-link anchor chain, how much does the addition of the stud increase the strength of the link?

What is the traditional signal for fire aboard ship?

Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indic...

What is the definition of height of tide?

Which shallow water effect will increase dramatically if you increase your ship's speed past its "critical speed"?

What is the appropriate first aid treatment for small cuts and open wounds?

BOTH INTERNATIONAL & INLAND You hear the firing of a gun at one-minute intervals from another vessel. What does this sig...

Your vessel is issued a load line certificate dated 27 May 1992. Which is an acceptable date for one of the surveys for...

What does the gross tonnage of a vessel indicate?

You will be transiting a traffic lane with a wreck having a charted depth of 40 feet. The Zone of Confidence (ZOC) for ...

You are underway on course 050°T and your maximum speed is 11 knots. The eye of a hurricane bears 070°T, 80 miles from ...

You are 15 feet off a pier and docking a vessel using only a bow breast line and stern breast line. Once the slack is o...

Your vessel has just received a distress message. As the master of the vessel, when are you relieved of your obligation...

BOTH INTERNATIONAL & INLAND What does the continuous sounding of a fog whistle by a vessel indicate?

When a vessel violates the oil pollution laws, who may be held responsible?

Shell plating is __________.

Which of the following is associated with consistently high barometric pressure?

When is the peak of the hurricane season in the western North Pacific?

What is the period of validity of a Cargo Ship Safety Radio Certificate?

What is the operating principal of a flash type evaporator?

An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter "E" (...

What would be the result of physical exertion on the part of a person who has fallen into cold water?

Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?

When the time is based on the movement of the visible Sun along the ecliptic the time is known as __________.

In all but the most severe cases, how should bleeding from a wound be controlled?

What is the group of markings shown in illustration D003DG below called?

An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter "I" (...

What is the purpose of a striking plate?

You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 080°T, 100 miles from...

Which wind results from a land mass cooling more quickly at night than an adjacent water area?

Which term defines the total weight of a box containing cargo?

Which statement about the Williamson turn is FALSE?

Each crewmember has an assigned firefighting station. Where is this assignment listed?

How should the number "3" be pronounced when spoken on the radiotelephone?

How are altocumulus clouds defined?

Which would be the subject of a NAVAREA warning?

If you find a victim that is unconscious. What vital signs is an immediate threat to life?

Which action should the GMDSS radio operator take in a distress situation when embarking in survival craft?

You are berthed at a cargo facility where you have just completed discharging a dangerous cargo. You must complete tops...

If you are forced to abandon ship in a rescue boat, which action should you take?

Which defines the term relative humidity?

The dew point is reached when which condition occurs?

How is the "off-load" release system on a survival craft designed to be activated?

When bunkering is complete, which is the correct procedure concerning the bunker hoses?

An icebreaker may use the code letter "K" to remind ships of their obligation to listen continuously on their radio. Ho...

The distress message of a ship should include considerable information which might facilitate the rescue. Which is TRUE...

Your vessel is on a course of 082°T at 19 knots. At 0255 a light bears 059.5°T, and at 0312 the light bears 037°T. A...

Weather systems in the middle latitudes generally travel in which direction?

You have steamed 726 miles at 17.5 knots, and consumed 138 tons of fuel. If you have 252 tons of usable fuel remaining,...

A thirty-pound plate would be which thickness?

In areas where CO2 piping is installed, such piping may not be used for any other purpose EXCEPT when used as described...

Which statement(s) is(are) TRUE concerning the use of dry chemical extinguishers?

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's foghorn 4 seconds after the si...

Which is TRUE concerning magnetic compass deviation?

An alien crewmember with a D-1 permit leaves the vessel in a U.S. port and fails to return. The first report you make s...

A seaman leaves a vessel before it sails from a foreign port. He informs the Chief Officer that he won't return. After ...

According to Pollution Prevention Regulations (33CFR), who is required to sign the entry in the Oil Record Book after e...

If you see an individual fall overboard, which action(s) should you take?

You are enroute to assist vessel

In both regions of the IALA buoyage system, which topmark shown in illustration D022NG below is used on a special mark?

What is the best indication of the loading of a diesel engine?

Which categories of NAVTEX messages may not be selectively rejected through receiver programming?

You are at sea and not in a special area as defined in ANNEX V of MARPOL. What is the minimum distance in nautical mile...

What is the lifesaving signal for "You are seen - Assistance will be given as soon as possible"?

You are outbound in a channel marked by a range astern. The range line is 273°T. You are steering 090°T and have the ra...

Under the IALA cardinal system, what does a mark with a quick white light showing 6 flashes followed by one long flash ...

Which statement about the deck line is TRUE?

Addition of weight to a vessel will ALWAYS __________.

Which statement about a tunnel bow thruster is TRUE?

A situation has occurred where it becomes necessary for you to be towed. What action should be taken to prevent your ve...

If the current and wind are in opposite directions, what does the sea surface indicate?

The GP of a body for a high-altitude sight is determined from the declination and which other information?

Which agency deals with stowaways?

Which defines reserve buoyancy?

The dangerous cargo manifest does NOT include which item of information?

What is the spoken emergency signal for a distress signal over a VHF radio?

Which is the region containing 3/4 of the mass of the atmosphere and to which are confined such phenomena as clouds, st...

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's foghorn 4 seconds after the si...

If the Master of a US-flag towing vessel replaces any crew member with a non-US citizen, he/she must ensure which of th...

Which term is given to the maximum length allowed between main, transverse bulkheads on a vessel?

You have arrived at your anchorage location. You have put the engines astern prior to letting go the anchor. How will y...

When shoring a damaged bulkhead, effort should be taken to spread the pressure over the __________.

A pilot chart does NOT contain information about which item?

The four standard light colors used for lighted aids to navigation are red, green, white, and __________.

SOLAS requires a lifesaving training manual be provided in each crew cabin or in which other location?

Which condition must be met during a stability test on an inspected vessel?

The scuppers had been plugged as required at the time a small oil spill occurs on deck from a leaking dresser coupler. ...

As a last resort, what can a tourniquet be used for?

The path that a vessel is expected to follow, represented on a chart by a line drawn from the point of departure to the...

The First Point of Aries is the position of the Sun on the celestial sphere on or about __________.

Why should a person being treated for shock be wrapped in warm coverings?

Which of the following would be a good extinguishing agent for a grade B product of 1,3-Pentadiene?

What effect does bank cushion have on the hull of a vessel in shallow water?

When launching a lifeboat, when should frapping lines be rigged?

Yesterday your chronometer read 02h 59m 58s at the 1500 GMT time tick. Today the chronometer reads 03h 00m 02s at the 1...

If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obt...

Which statement about the dangerous cargo manifest is FALSE?

When taking a Pilot from a pilot vessel in a seaway, which way should you head your vessel if the ladder is on the leew...

Which action must be taken for uncleared crew curios remaining on board during a domestic coastwise voyage after return...

Which defines reserve buoyancy?

You take a bearing of 264° of a lighthouse. Which bearing of another object would give the best fix?

A vessel's position should be plotted using bearings of __________.

Your ship of 12,000 tons displacement has a center of gravity of 21.5 feet above the keel. You run aground and estimate...

Which of the following statement(s) is/are TRUE regarding twin pedestal cranes?

U.S. regulations require all tankships of 150 GT and above and all other ships of 400 GT and above, to prepare and main...

After having thrown the liferaft and stowage container into the water, how is the liferaft inflated?

You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?

You are in a channel inbound from sea. A daymark used to mark a channel junction, when the preferred channel is to port...

What does blowing tubes accomplish?

While communicating with a shore station concerning an injured female, your message should indicate the subject's age i...

Under normal weather and sea conditions when securing a stack of containers with non-locking fittings, lashings are req...

You have abandoned ship and are in charge of a liferaft. How much water per day should you permit each occupant to drin...

What does a barometer showing falling pressure indicate?

Entering a harbor, you take a bearing on a range and get 338° per gyrocompass (pgc). The true bearing from the chart is...

You have determined the maneuvering characteristics of your vessel by taking the radar ranges and bearings of an isolate...

In vessel construction, which is TRUE of the garboard strake?

If a cargo of kerosene were considered "too lean" to explode, then it must be __________.

Your vessel has grounded and a report must be made to the United States Coast Guard. Which is the required form for thi...

Your vessel is participating in the Voluntary Observing Ship Program, you are preparing WS Form B-80 as seen in illustr...

Which condition(s) is(are) necessary for the formation of dew?

What is the operating principal of a flash type evaporator?

What does first aid mean?

Regulations concerning the stowage, lashing, and securing of timber deck cargoes aboard general cargo vessels may be fo...

When does a cylinder in a two-cycle engine experience combustion?

Pressure gradient is a measure of __________.

When using a mechanical (windup type) marine chronometer, how often should it be reset?

On what type of pump would you find an impeller?

Cargo vessels being navigated, and fitted with emergency lighting and power systems, shall have their emergency systems...

What is the penalty for desertion?

Your cargo vessel is transiting pirate waters with a temporary security team onboard. The ship has been attacked and st...

If you were sailing in the North Pacific and were interested in the ice and iceberg limits, where could you find this i...

Which type of weather could you expect soon after seeing "hook" or "comma" shaped cirrus clouds?

What is NOT a requirement for a salvage claim?

On an inspected vessel, which abbreviation refers to the horizontal distance between perpendiculars taken at the forward...

How should a look-out, in the merchant service, report sightings?

When choosing extinguishers to fight a Class "B" fire do NOT use which type of extinguisher?

Your vessel is entering port and you have steadied up on a range, dead ahead, in line with your keel. After a few minute...

Two well-developed high-pressure areas may be separated by which item?

For insurance purposes, which is a requirement for a general average act?

Petroleum cargo tanks should not be topped off at deck level when loading on a cold day due to which of the following?