OSV01 - Master/Chief Mate - Offshore Supply Vessels

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

Which statement is TRUE?

To prevent the spread of fire by convection you should take which action?

You have 400 tons of below deck tonnage and 100 tons of above deck cargo on board. You must load 160 tons of liquid mud...

All of the following can be found on a Pilot Chart EXCEPT information concerning which item?

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

The Light List shows that a navigational light has a nominal range of 17 miles and a height above water of 28 feet (8.5...

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

On 14 March your 1846 ZT DR position is LAT 21°57.6' N, LONG 132°16.2' W. At that time, you observe Polaris with a sext...

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

When using two tugs to assist in mooring a large, deeply laden ship, where is the most powerful tug usually placed?

Distress signals may be __________.

The liquid mud tanks on your vessel measure 20'L by 18'B by 7'D. The vessel's displacement is 866 T and the specific gr...

What is the standard atmospheric pressure in millibars?

Barometers are calibrated at which standard temperature?

The following questions are to be answered using Chart 12221TR, Chesapeake Bay Entrance, and supporting publications. ...

A vessel steams 3312 miles on course 282°T from LAT 34°24'S, LONG 18°18'E. What is the latitude and longitude of the po...

On 19 July your 1500 ZT DR position is LAT 28°25.0'N, LONG 120°28.0'W. You are on course 233°T at a speed of 10 knots. ...

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

Regulations require that OSV's under 100 GT must have a steering system that is capable of moving the rudder __________...

A seaman is reported missing in the morning and was last seen after coming off the mid-watch. Which type of turn would ...

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

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

Which is TRUE concerning a first magnitude star?

From your 2000 position you change course to 206°T. What time would you expect to be abeam of Hog Island Buoy "12"?

You are on a voyage from Limoy, Costa Rica to Los Angeles, C

In which situation does a great circle track provides the maximum saving in distance?

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

What is the purpose of a check valve?

Which is TRUE if passengers are on board when an abandon ship drill is carried out?

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...

What color is a triangular daymark?

Coral atolls, or a chain of islands at right angles to the radar beam, may show as a long line rather than as individua...

You should expect to pass how far off buoy "12"?

On 15 July in DR position LAT 22°19.0'N, LONG 154°37.0'W, you observe an amplitude of the Sun. The Sun's center is on t...

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...

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

Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom?

Which formula can be used to calculate metacentric height?

Your drafts are: FWD 5'-08", AFT 6'-04". From past experience, you know that the vessel will increase her draft 1 inch ...

When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.

Your present weather is sunny with a steady barometer. A low swell approaches your vessel from the south with crests pa...

At 2030 you take the following bearings: Sand Shoal Inlet South Light - 275°T Cape Charles Light - 235°T What is th...

If the pitch of the propeller is 22.4 feet, and the revolutions per day are 103,690, calculate the day's run allowing 9...

You observe the lower limb of the Sun at a sextant altitude (hs) of 45°49.7' on 13 November. The index error is 1.0' on...

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

Which statement about tunnel bow thrusters fitted to large vessels is TRUE?

When abandoning ship and jumping into the water from a substantial height without a life jacket, you should __________.

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...

Under the IALA cardinal system, a mark with a quick light showing 9 flashes every 15 seconds indicates that the safest ...

Why are low altitude sun sights not generally used?

From your 2030 fix you change course to 195°T and leave the engine speed at 14 knots. At 2045, your position is Lat 37°...

On 9 November 2023 at 0330, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). What is the direction and...

Determine the distance from LAT 63°54.0'N, LONG 04°52.0'E to LAT 63°54.0'N, LONG 18°24.0'W by parallel sailing.

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

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

In illustration D016SA below, what number indicates the frapping line?

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...

Where can information about the direction and velocity of rotary tidal currents be found?

Which is most commonly associated with fog?

While steaming at 16.5 knots, your vessel consumes 349 barrels of fuel oil per day. In order to reduce consumption to 18...

Using gnomonic tracking chart WOXZC 5270, determine which of the following statements about a voyage from San Francisco...

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

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

What is the objective of shoring a damaged bulkhead?

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...

If the current and wind are in the same direction, what does the sea surface represent concern the true wind speed?

The range of tide is the __________.

What is your course made good from 2045 to 2111?

On 7 December your 0350 ZT position is LAT 35°42'N, LONG 17°38'E. You observe Polaris bearing 359.7°pgc. At the time of ...

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...

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

Your tank barge requires repairs that include welding. Who normally would issue a gas-free certificate?

What is the main advantage of a steady stream of water on a class "A" fire?

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 19'-00", AFT 24'-00". After all bunkers are on board, soun...

Steam fog will occur when which conditions exists?

If you observe a rapid fall of barometric pressure, which action should you take?

If you are going to head directly for Chesapeake Light from your 2111 fix, what is the course to make good?

Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the north...

On 18 May your 1030 ZT DR position is LAT 18°30'N, LONG 62°31'W. You are on course 286°T, speed 24 knots. Determine you...

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

What is the name of the mark indicated by the letter C in illustration D003DG below?

What is the purpose of a check valve?

You are on a supply run to an offshore drilling rig. You are carrying the load show in table ST-0015 below. What is the ...

What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star si...

You are heading out to sea in a buoyed channel and see a quick flashing green light on a buoy ahead of you. In U.S. wat...

At 2200, you alter course to 204°T, at 14 knots. You expect a current on this leg of the trip, setting 325° at 1.5 knot...

On 12 November, you are taking a time tick using the 1600 GMT BBC Broadcast. You hear five pulses followed by a longer p...

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

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

During oil transfer operations, who is responsible for ensuring that the posted transfer procedures are followed?

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

Mariners are FIRST warned of serious defects or important changes to aids to navigation by which means?

Which is the standard meridian for the time zone +1?

Determine the great circle distance and initial course from LAT 08°36.0'N, LONG 126°17.0'E to LAT 02°12.0'S, LONG 81°53...

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

The most likely time for oil pollution while bunkering is when __________.

How should the sea painter of a rescue boat be led?

Which is TRUE of an alternating light?

Your vessel is located at position I on the weather map in illustration D013NG below. You should experience which weath...

On 4 December your 1500 ZT DR position is LAT 18°06.0'N, LONG 75°42.0'W. You are on course 020°T at a speed of 15.0 kno...

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

What is the cause of most minor spills of oil products?

When is firefighting foam most effective?

Which term is used to describe a generally circular low-pressure area?

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...

You desire to make good a true course of 203°. The variation is 19°E, magnetic compass deviation is 2°W, and gyrocompas...

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

Which describes ice blink?

The gross weight of a fully charged CO2 bottle in a fixed CO2 system is 220 lbs. When the bottle is empty it weighs 120...

Under the U.S. Aids to Navigation System, which category is a yellow buoy?

Which publication indicates the HYDROLANTS or HYDROPACS issued since the previous working day?

On 28 July your 0800 zone time (ZT) fix gives you a position of LAT 25°16.0'N, LONG 71°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...

A sling is rigged on a piece of pipe weighing 1000 lbs. The angle between the sling legs is 140° and the legs are of eq...

A thrust bearing is designed to accomplish which action?

What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?

The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the starboa...

On 3 October your 0330 zone time (ZD + 5) DR position is LAT 47°41'N, LONG 86°49'W. At that time, you observe Polaris b...

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

Before arriving at the first U.S. port from foreign, you must fill out a Crewman's Landing Permit. Which crewmember(s) ...

By day, what is the signal meaning, "This is the best place to land"?

The winds of the "roaring forties" are strongest near which latitude?

The winds of the "roaring forties" are strongest near which latitude?

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

A high cube container is designed specifically to accomplish which task?

How does bleeding from a vein appear?

Which statement is TRUE concerning a Mercator projection?

How are you informed of defects or changes in aids to navigation?

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

Under normal operating conditions aboard a ship, who has the overall responsibility in maintaining the Oil Record Book?

The "Vessel Bridge-to-Bridge Radiotelephone Act" applies to which towboat?

Which term is given to a tornado that moves out over the water from land?

In the horizon system of coordinates what is equivalent to the poles on the Earth?

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

According to U.S. regulations, normally, where are manholes on a tank vessel designed to carry LFG located?

Which defines the function of a spark arrestor?

You have replaced the chart paper in the course recorder. Which statement is TRUE?

If several navigational lights are visible at the same time, each one may be positively identified by checking all of t...

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

Which space(s) is(are) deducted from gross tonnage to derive net tonnage?

Overspeed of the diesel engine driving an electric generator could cause which situation to occur?

Buoys which mark dredging areas are painted which color?

You are on course 222°T and take a relative bearing of a lighthouse of 025°. What is the true bearing to the lighthouse...

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

Which term describes the time allowed for loading and discharging cargo in a charter party?

If the situation arose where it became necessary to tow a disabled vessel, which statement is TRUE concerning the towin...

Discounting slip, if your vessel is turning RPM for 10 knots and making good a speed of 10 knots, which is TRUE of the ...

What is the average speed of the movement of a hurricane following the recurvature of its track?

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

The number of able seamen required on board a vessel can be found in which document?

Your vessel has been taking on water but now the breached hole has been repaired. Which effects can the flooding have o...

The symbol which appears beside a light on a chart reads "Gp Fl R (2) 10 sec 160 ft 19M". Which characteristic does the...

When observing a rapid rise in barometric pressure, what may you expect?

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

Which color is the next-to-last shot of an anchor cable usually painted?

The pillar shape that gives the greatest strength for the least weight is the __________.

Which weather element cannot be measured accurately while on board a moving vessel?

Your vessel is steering 096°T at 17 knots. At 1847 a light bears 057°T, and at 1916 the same light bears 033°T. What wi...

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

Which item shall the Master insure regarding the Emergency Position Indicating Radio beacon (EPIRB)?

When compared to a high-expansion foam, a low-expansion foam will __________.

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

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

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

According to the Chemical Data Guide, what is the Reid Vapor Pressure of tert-butylamine?

What is the function of wearing rings found on some centrifugal pumps?

Which frontal system occurs when a cold air mass and a warm air mass meet, and there is no horizontal motion of either ...

In which months will the North Equatorial Countercurrent be strongest?

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

You are docking a ship with a single-screw tug assisting on your starboard bow. How should the tug be tied up if you ar...

The flag hoist 62.2 would be sent as pennant 6, pennant 2 followed by what?

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

At 0000 you fix your position and plot a new DR track line. At 0200 you again fix your position, and it is 0.5 mile eas...

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

Your 199 GT tugboat is on a 675-mile coastwise voyage. What percentage of the deck crew must be Able Bodied Seamen?

In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by which method?

The depth of water on a chart is indicated as 23 meters. What does that depth convert to?

Which statement is TRUE concerning a Mercator projection?

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

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

What is the thickness of a 30.6-pound plate?

Yesterday your chronometer read 11h 59m 58s at the 1200 GMT time tick. Today your chronometer reads 12h 00m 00s at the ...

The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of...

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

Your load line certificate expires on 27 May 1988. The vessel is surveyed on that date and is found satisfactory. You a...

Pitching is angular motion of the vessel about what axis?

You desire to make good a true course of 174°. The variation is 17°W, magnetic compass deviation is 4°W, and gyrocompas...

Which is TRUE of an occulting light?

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

You are planning the stowage of two incompatible products on your multiple-product tankship. What will NOT provide the ...

Which term defines the most probable position of the object of a search at any given time?

What can be expected with the presence of stratus clouds and a dying wind?

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

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

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

You wish to communicate information that the swell in your area is 8-10 feet in height and from the northeast. How woul...

What does a white buoy with an orange cross within a diamond marked on it indicate?

The initial great circle course angle between LAT 23°00'S, LONG 42°00'W and LAT 34°00'S, LONG 18°00'E is 063.8°. What i...

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

After casting off moorings at a mooring buoy in calm weather, which action should you take?

Which of the following is a requirement of the mechanical disengaging apparatus in a lifeboat?

Why is the wind velocity higher in the dangerous semicircle of a tropical cyclone?

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

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

What is the procedure to obtain an initial inspection for a Coast Guard Certificate of Inspection for your vessel?

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

When your vessel is on the storm track but behind the storm's center the __________.

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship’s foghorn 6 seconds after the si...

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

Which action(s) is/are included in crane operations?

When patching holes in the hull, how can pillows, bedding, and other soft materials be used?

Which term is used to describe the small differences between the heights of two successive high tides or two low tides,...

You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions...

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

Which is a predictable result of a vessel nearing a bank or edge of a steep banked channel?

All personnel on board a vessel should be familiar with the rescue boat's __________.

By convention, the Earth's south magnetic pole is which color?

To make sure of getting the full advantage of a favorable current, you should reach an entrance or strait at which time...

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

What affect does shallow water have on a vessel's stopping distance?

Where do signs of racking stresses generally appear on the vessel?

What does a hygrometer measure?

The line of position determined from a sight with an observed altitude (Ho) of 88°45.0' should be __________.

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

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

An important step in fighting any electrical fire is to take which action?

How can the accuracy of an azimuth circle be checked?

A great circle will intersect the equator at how many degrees of longitude apart?

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

What can cargo hold bilge soundings indicate?

Repairing damage to the hull at or above the waterline reduces which threat?

In illustration D051NG below, why was the position labeled "E" plotted?

You are plotting a running fix. The LOP to be run forward is an arc from a radar range, what technique should be used?

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

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

What is the proper stimulant for an unconscious person?

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 2 1/2 seconds after th...

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

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 disabled and in imminent danger of grounding on a lee shore. The Master agrees to salvage services using...

What must be accurately determined to assess the potential for progressive flooding after a vessel has been damaged?

What is the reference datum mean high water used to measure?

While proceeding up a channel on course 010° per gyrocompass, you notice a pair of range lights in alignment with the m...

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

Coast Guard Regulations permit which of the following systems to be used for fire prevention and the simultaneous inert...

The important initial stability parameter, GM, is which of the following?

Which term is given to a radar display which is oriented, so that north is always at the top of the screen?

Your vessel has changed course and is heading 285°T, you are on the charted range, and it appears as in illustration D0...

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

Which is a requirement for the stowage of the Emergency Position Indicating Radio beacon on an OSV?

What can you do if a person gets something in his or her eye and you see that it is not embedded?

When considering currents, which defines the term set?

When would cloud formations be minimal?

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

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

Which statement about the Williamson turn is FALSE?

Which name is given to the pressure-sensitive element of an aneroid barometer?

Apparent altitude is sextant altitude corrected for __________.

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

In accordance with U.S. regulations which of the following is the proper label name for a class 6.1 substance?

You are at sea and have received a General Emergency message announcing the outbreak of war in Europe. You are directed...

The dry bulb temperature is 78oF and the wet bulb temperature is 62oF. What is the relative humidity?

Which correction must be applied to an aneroid barometer reading?

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

Sweat damage in a hatch full of canned goods in cartons will occur when which condition exists?

The vessel shown in illustration D025DG has broken down and you are going to take her in tow. The wind is on her starbo...

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

The dew point is reached when which condition occurs?

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

The immersion suit requirements for OSV apply to units operating in the Atlantic Ocean in which latitudes?

In general, how often are sanitary inspections of passenger and crew quarters made aboard passenger vessels in river se...

The largest waves (heaviest chop) will usually develop where the wind blows __________.

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

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

Which of the following describes (auto) ignition temperature?

Which is TRUE concerning drinking salt water?

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

Civil twilight starts at 1812 zone time on 26 August, your DR position at that time is LAT 21°06'S, LONG 14°56'W. Which...

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

Your vessel is taking on fuel when a small leak develops in the hose. You order the pumping stopped. Before you resume ...

Which term is used to describe the horizontal port or starboard movement of a vessel?

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

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

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

What is the period of validity of a Safety Management Certificate?

When will the float-free emergency position indicating radio beacon be activated after abandoning ship?

Which type of precipitation is a product of the violent convection in thunderstorms?

For a well-made and well-maintained sextant, the maximum value of which correction is usually so small that it can be i...

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

Where may a crewmember find information on the fire and abandon ship stations and his/her assigned duties?

The shearing stresses on a ship's structure are usually greatest at which area?

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

When does the effects of priming of the tides occur?

A seaman is entitled by law to a release from Foreign Articles when which situation has occurred?

What monitoring device best indicates the load being carried by a diesel engine?

As the South Equatorial Current approaches the east coast of Africa, it divides with the main part flowing south to for...

Under the IALA - A Buoyage System, a buoy used as a port hand mark would not show which light characteristic?

The Master may require part of the crew to work when needed for which function?

What is the most probable cause of reduced capacity in a reciprocating air compressor?

Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many ho...

What causes deviation in a magnetic compass?

Which characteristic is an advantage of a butterfly valve as compared to a gate valve?

What is the expected range of a VHF radio transmission from a vessel to a shore station?

An electronic depth finder operates on which principle?

What does a white buoy with an open-faced orange diamond on it indicate?

An icebreaker assisting a vessel through an ice field displays a visual signal consisting of the code letter "S" (Sierr...

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

Which is TRUE of Raster-scan chart data?

How can the accuracy of an azimuth circle be checked?

A Danforth lightweight anchor usually skips along and does NOT hold well in which bottom?

How are lifelines attached to a life float?

What is a system of reservoirs and connecting tubes in a gyro compass called?

Which term is given to magnetism which is present only when the material is under the influence of an external field?

Which action reduces the yawing of a vessel in a following sea?

All of the following are recognized distress signals under the Navigation Rules EXCEPT which signal?

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...

Which daymark has no lateral significance?

Your ship has loaded 8,000 barrels of gasoline at a cargo temperature of 36°C (97°F). API gravity is 54°. The volume co...

What is the primary use of antiseptics?

You are underway on course 120°T and can make 12 knots. The eye of a hurricane bears 150°T at 120 miles. The hurricane ...

On 25 December you observe the Sun's lower limb. The sextant altitude (hs) is 4°06.9'. The height of eye is 47-feet and...

On a vessel, constructed after 1970, carrying grades A, B, C or D cargoes, what can NOT segregate enclosed spaces where...

In illustration D033DG below, what is a wooden deck installed on top of the plating lettered N known as?

Which is a characteristic of warm air masses?

Your radar indicates a target; however, there is no visible object at the point indicated. A large mountain, approximat...

Which is TRUE concerning the vapor pressure of a substance?

If you are fighting a fire below the main deck of your vessel, which action is most important concerning the stability ...

What do widely spaced isobars on a weather map indicate?

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

You are docking an oceangoing single-screw vessel under normal circumstances with a single tug. Which is the usual func...

Which statement is TRUE concerning distress signals in a lifeboat?

To make sure of getting the full advantage of a favorable current, you should reach an entrance or strait at which time...

What weather change accompanies the passage of a cold front in the Northern Hemisphere?

Which vessel is most likely to be loaded full but not down?

What is the minimum number of people required to safely handle a 1-1/2-inch fire hose?

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

When do the prevailing westerlies of the Southern Hemisphere blow 17-27 knots?

A vessel arrives in a foreign port and the Master is informed that the vessel is being sold to foreign interests. The n...

Your vessel is damaged, listing to port and on occasion flopping to the same angle to starboard. It has a long, slow, s...

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

Ascending and descending air masses with different temperatures is part of an important heat transmitting process in ou...

Which item must be entered in the official log?

To increase the extent of flooding your vessel can suffer without sinking, you could take which action?

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

Which describes the level of database information which cannot be removed from the ECDIS display and consists of inform...

Which indicates the holding capability of an anchor?

Aboard a vessel, what does dividing the sum of the longitudinal moments by the total weight yield?

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

You are on course 303°T. To check the speed of your vessel you should observe a celestial body on which bearing?

Which is usually the most gentle way of riding out a severe storm on a larger vessel?

What is the most serious effect of oxygen retained in a diesel engine jacket water cooling system?

When navigating in high latitudes and using a chart based on a Lambert conformal projection, which is TRUE?

Which term is used to describe the speed at which an ocean wave system advances?

If a tug equipped with flanking rudders is to be turned in a confined circle, when going astern, which is the best acti...

In illustration D033DG below, which letter indicates a butt?

You are underway in an area where the charted depth is 8 fathoms. You compute the height of tide to be -4.0 feet. The d...

What indicates the arrival of a hurricane within 24 to 36 hours?

A vessel to which Annex V to MARPOL 73/78 applies is located 10 nautical miles from the nearest land. Which type of gar...

What is Metacentric height a measure of?

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

Which term is given to the points where the Sun is at 0o declination?

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

Most open lifeboats are equipped with which type of rudder?

The Brazil Current flows in which general direction?

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

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

You are releasing carbon dioxide gas (CO2) into an engine compartment to extinguish a fire. In which situation will the...

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

What is the equivalent of 37 min. 32 sec. in arc units?

The possibility of wake damage can be reduced by following which action?

Jettisoning weight from topside __________.

You are entering port and have been instructed to anchor, as your berth is not yet available. You are on a SW'ly heading...

You are enroute to assist vessel

What is your speed made good from 2045 to 2111?