ONC02 - Second Mate/Third Mate Unlimited Tonnage

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

You are underway in heavy weather and your bow is into the seas. Which action should you take to prevent pounding?

In illustration D039SA below, what is the fire control plan symbol represented by number (67)?

Which fog is produced by warm moist air passing over a cold surface?

An orange and white buoy with a rectangle on it displays what information?

The following questions are based on Chart 12221TR, Chesapeake Bay Entrance, and the supporting publications. Informati...

You are taking a time tick using the 1400 signal from Buenos Aires, Argentina. You hear a 0.4 second dash followed by a...

On 5 May your 1800 ZT DR position is LAT 26°11.5'N, LONG 65°35.0'W. You are on course 270°T at a speed of 12 knots. Wha...

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

If your propeller is racing in rough weather, which action should you take?

Great Lakes vessels, using liferafts, must have sufficient liferaft capacity on each side of the vessel to accommodate ...

Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic?

How is an occluded front represented on a weather map?

At 0540, your position is LAT 37°15.8'N LONG 75°33.7'W. You intend to arrive 0.3nm due North (000°T) of the North Chesa...

On 10 November 2023 at 2030, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). What is the direction a...

On 20 September your 0730 zone time position was LAT 28°58.0'N, LONG 152°26.0'W. Your vessel was steaming on course 225...

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

When the period of beam seas equals the natural rolling period of a vessel, what will most likely occur?

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

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

What is published by the U.S. Coast Guard?

Along this track line, what could you expect in heavy northeasterly weather?

If the pitch of the propeller is 23.2 feet, and the revolutions per day are 94,910, calculate the day's run allowing 11...

On 26 September your 0830 zone time DR position is LAT 26°04.0'N, LONG 129°16.0'W. Your vessel is on course 119°T at a ...

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

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

What should you do if you have transmitted a distress call a number of times on channel 16 and have received no reply?

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

The apparent wind is zero when which situation exists with the true wind?

The meteorological visibility is 9nm. Which of the following is TRUE?

On 3 October 2023, you will be docking at the Dundalk Marine terminals in Baltimore, MD at the second high tide. The be...

On 12 September your 0600 zone time (ZT) fix gives you a position of LAT 22°51.9'N, LONG 133°40.1'W. Your vessel is on ...

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

Which term describes the distance a vessel moves in the direction of the original course from the point where the rudde...

You are calling another vessel by radiotelephone using the International Code of Signals. He responds with the words "A...

Pressure gradient is a measure of __________.

How can you follow the approach of a dangerous cyclonic storm?

At 0620, steering 219°pgc and turning for 14.5 knots, Chesapeake Light is bearing 191°pgc and Cape Charles Light is bea...

The propeller on a vessel has a diameter of 21.5 feet and a pitch of 24.5 feet. What would be the apparent slip if the ...

While on a course of 349°T, a light bears 13° on your starboard bow at a distance of 10.8 miles. What course should you...

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

Why is a VLCC (100,000 DWT+) with a 30,000 Shaft Horsepower Steam Turbine slow to respond to engine movements, and has ...

What could be a result of insufficient lubrication of lifeboat winches and davits?

You are underway on course 120°T and your maximum speed is 12 knots. The eye of a hurricane bears 150°T, 120 miles from...

Which is a characteristic of warm air masses?

From your 0620 position, what will be the course to make good to arrive 0.3nm due North (000°) of Y"NCA", disregarding ...

A vessel at LAT 32°14.7'N, LONG 66°28.9'W, heads for a destination at LAT 36°58.7'N, LONG 75°42.2'W. Determine the dist...

On 3 December evening twilight for your vessel will occur at 1901 zone time. Your vessel's DR position will be LAT 24°1...

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

When passing a moored vessel in a narrow channel which actions will help minimize wake damage?

A vessel's bottom will be subjected to tension when weight is concentrated in which location(s)?

If you are caught in the left semicircle of a tropical storm, in the Southern Hemisphere, which action should you take?

What is the standard time meridian for description +12?

At 0620, you reduce speed to 10 knots and, at 0720, change course to 252°pgc when you are 0.3nm due North (000°T) of Y”...

On 28 November your vessel's 0652 DR position is LAT 37°30'N, LONG 124°12'W, when an amplitude of the Sun is observed. ...

On 18 August at 0600 ZT, morning stars were observed, and the vessel's position was determined to be LAT 19°48'N, LONG ...

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

Which states the requirements for the access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo?

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

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

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

At 0800, Cape Charles Light is bearing 010°pgc and Cape Henry Light is directly in line with the Chesapeake Bay Entranc...

On 21 April your 1542 zone time DR position is LAT 28°54.0'S, LONG 19°07.0'W. At that time, you observe the Sun bearing...

On 13 October at 1847 ZT, your vessel's DR position is LAT 42°17.4' N, LONG 138°46.2' W. At approximately this time, yo...

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

Deck foam systems, designed to protect cargo areas on tank vessels built after January 1, 1975, must have a supply of f...

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

The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean ______...

On an isomagnetic chart, which term is used for the line of zero variation?

Which of the following is TRUE regarding the “CBJ” buoy?

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

You depart LAT 38°14'N, LONG 12°42'W, for LAT 38°14'N, LONG 46°09'W. What are the course and distance by parallel saili...

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

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...

There is a fire in the crew's quarters of your vessel. Which action should you take FIRST?

Safe water buoys may show ONLY which type of light?

Your vessel is on course 150°T, speed 17 knots. The apparent wind is from 40° off the starboard bow, speed 15 knots. Wh...

From your 0800 position, which course should you steer to enter the authorized channel that will take you through the o...

Your vessel departs Yokohama from position LAT 35°27.0'N, LONG 139°39.0'E (ZD -9), at 1330 ZT on 23 July, bound for Seat...

You desire to make good 152°T. The magnetic compass deviation is 4°E, the variation is 5°E, and the gyro error is 3°E. ...

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

Which international body is responsible for drafting the MARPOL convention prohibiting marine pollution?

In plugging submerged holes, why are rags, wedges, and other materials used in conjunction with plugs?

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE...

Your ship is entering port from sea, and you sight a pair of range lights. When in line, they bear 315° per standard ma...

On 22 February your 2045 ZT position is LAT 33°19'N, LONG 52°06'W. You observe Polaris bearing 358.1°pgc. At the time o...

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

On an inspected vessel, when may a stability test be dispensed with?

With the sprinkler system and air system on and all hatches shut, what will the survival craft provide protection from?

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

What must the owner or Master do if any of the towing vessel's required navigational safety equipment fails during a vo...

Your arrival at the dock places you alongside during an Extreme Low Water occurrence. Based on Old Point Comfort tidal ...

On 22 July your 0442 DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 104°T at an...

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

Who must approve the vessel's trim and stability booklet?

Which signal should be used to send the group "Distance 750 nautical miles"?

Which term describes a light, feathery deposit of ice by sublimation of water vapor directly into the crystalline form ...

While taking weather observations, you determine that the wind is coming from the west. In the weather log, how would y...

As you pass Thimble Shoal Channel Lighted Buoy R”14” close abeam in your designated channel, what should your fathomete...

On 19 November your 0200 zone time DR position is LAT 18°41'N, LONG 150°37'E. You are on course 014°T at a speed of 18 ...

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

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

Your vessel has a displacement of 19,800 tons. It is 464 feet long, and has a beam of 64 feet. You have timed its rolli...

What do red sectors of navigation lights warn mariners of?

A daymark used to indicate the starboard side of the channel when approaching from seaward will have the shape indicate...

At 0930, you are in position LAT 37°00.3’N LONG 76°13.6’W. If you are making good 284°T at 10.0 knots, when is the late...

The great circle distance from LAT 24°25.3'N, LONG 83°02.6'W to LAT 35°57.2'N, LONG 5°45.7'W is 3966.5 miles. Determine...

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

Every entry required to be made in the Official Logbook shall be signed. Who is required to sign this logbook?

What is the weight of the liquid displaced by a vessel floating in sea water equal to?

When trying to sight a lighthouse you notice a glare from a town in the background. How does this affect the range at w...

The new Moon cannot be seen because the Moon is __________.

What light characteristic is the Old Point Comfort Light displaying from your 0930 position?

A vessel at LAT 20°00'N, LONG 107°30'W is to proceed to LAT 24°40'N, LONG 112°30'W. What is the course and distance by ...

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

Which is the proper way to correct a mistake in the logbook?

How can you indicate that your vessel is in distress?

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

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

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

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

To ensure receipt of all relevant MSI, a NAVTEX receiver should be turned on at least how many hours prior to departure...

In which country would you expect the channels to be marked with the IALA-B Buoyage System?

You are sailing south on the Intracoastal Waterway (ICW) when you sight a green can buoy with a yellow square painted o...

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

A block and tackle is "rove to advantage". What does this mean?

The water in which a vessel floats provides vertical upward support. Which term is regarded as the point through which ...

A green buoy has a yellow triangle on it. What type of buoy is this?

Your vessel is on course 180°T speed 22 knots. The apparent wind is from 70° off the port bow, speed 20 knots. What are...

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

Which factor is most likely to impair the strength and durability of synthetic line?

The all-purpose nozzle will produce a fog spray when you take which action?

You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?

Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sect...

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

To find the distance the strands should be unlaid for a Liverpool eye splice, multiply the diameter of the wire in inch...

What is the SAFEST action to take with an accumulation of oily rags?

You are inbound in a channel marked by a range. The range line is 133°T. You are steering 129°T and have the range in s...

Fog forms when the air temperature is at or below __________.

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

What should you inspect to be sure that it is safe to go aloft in a bosun's chair?

You are testing a tank that contained gasoline by using a combustible gas indicator. Under testing, the tank sample cau...

Which position includes the effects of wind and current?

Under the IALA-A Buoyage System, a buoy indicating the preferred channel is to port would have __________.

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

A temporary wire eye splice made with three wire rope clamps will hold approximately what percentage of the total rope ...

The cook has reported a fire in the deep fat fryer. What class of fire would this be?

Barometer readings in weather reports are given in terms of pressure at which reference location?

Which cloud commonly produces a halo about the Sun or Moon?

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

While the Pilot is maneuvering the vessel to a dock, what is the primary responsibility of the watch officer?

Where should the sea painter of a lifeboat be secured?

Which is TRUE concerning the occurrence of Spring tides?

You have another ship overtaking you close aboard to starboard. You have 3 radar targets bearing 090° relative at range...

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

How should a vessel spotted at 45° relative be reported?

Which is the term given to the joint formed when two steel plates are placed end-to-end?

By convention, what color is the south pole of a magnet painted?

The latitude of the upper vertex of a great circle is 36°N. What is the latitude of the lower vertex?

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

How should a vessel that is being assisted by an icebreaker indicate that it is ready to cast off the towline (if one i...

Which item is a safety feature provided on all inflatable liferafts?

On a working copy of a weather map what color is the line that represents a stationary front?

Which term is given to that half of the hurricane to the right-hand side of its track (as you face the same direction t...

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

Your vessel is being assisted by an icebreaker. How should you indicate that you are ready to cast off the towline?

If you have to abandon ship, and enter a liferaft, what should be your main course of action?

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

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's foghorn 3 seconds after the si...

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

Your vessel is being assisted through an ice field in Thunder Bay by the Canadian Coast Guard icebreaker Alexander Henr...

You are proceeding to a distress site. The survivors are in liferafts. What will make your ship more visible to the sur...

What does the lubber's line on a magnetic compass indicate?

Where can the annual change in variation for an area be found?

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

What is NOT required as special safety equipment on a tankship carrying hazardous cargoes in bulk?

What does subtracting GM from KM yield?

The southeast trade winds actually blow in which direction?

Under the IALA-A Buoyage system, a buoy marking the starboard side of the channel when approaching from seaward may hav...

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

Flammable liquids should have what kind of label?

After having activated the emergency position indicating radio beacon, which is the appropriate action to take?

Which is TRUE concerning air masses near the earth's surface?

You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 120°T, 110 miles from...

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

Which is a disadvantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels?

Which statement about AMVER reports is TRUE?

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

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

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

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

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

Plain language is usually used on marine weather __________.

You are steering 115°T, and a light is picked up dead ahead at a distance of 16.7 miles at 0522. You change course to p...

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

Stress on the topping lift of a swinging boom can be reduced by __________.

You are reading the draft marks as shown in illustration D032DG. The water level forward leaves about 4 inches of the 1...

Your vessel is on a course of 221°T at 15 knots. At 0319 a light bears 198.5°T, and at 0353 the light bears 176°T. A...

The survey information upon which a chart is based is found at which location?

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

When stowing hazardous materials on deck, lashing of such cargo is permitted if __________.

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

The owner or Master of a towing vessel must ensure that each person that directs and controls the movement of the vesse...

Which term is given to a light that has a light period shorter than its dark period?

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

What is the minimum standard for making an eye splice in a wire to be used as cargo gear?

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

The velocity of the apparent wind can be more than the true wind, and come from the same direction, if certain conditio...

What is the definition of height of tide?

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

Which of the following is classified as a flammable liquid?

You hear the general alarm and ship's whistle sound for over 10 seconds. What does this signal mean?

Under the IALA Buoyage Systems, which is TRUE of safe water marks?

You take a bearing of 313° and 076° of two objects. Which bearing of a third object will give the best fix?

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

Severe exposure to chlorine gas can be fatal. Chlorine gas is primarily a __________.

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 18'-06", AFT 20'-06". After all bunkers are on board, sou...

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

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

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

Sulfuric acid is a __________.

Shell plating is __________.

In most cases, the direction of the apparent wind lies between the bow and which reference point?

Which causes the wind flow from the horse latitudes to the doldrums to be deflected?

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

According to the Chemical Data Guide, the flash point for the grade B flammable liquid piperylene is __________.

A ship station license for your radiotelephone is valid for which of the following terms?

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

Which defines a wave's fetch?

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

Which of the signals listed is required to be displayed at night while bunkering at a dock?

Utilizing illustration D035SA below, the Master has ordered you to pull the remote ventilation shut down, where is it f...

What are Cirrus clouds primarily composed of?

What will a veering wind do?

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

Which is a precaution you should take before bunkering?

If you wear extra clothing when entering the water after abandoning ship it will accomplish which of the following?

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...

The dew point is reached when which condition occurs?

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

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

What is the purpose of a striking plate?

What must the owner or Master do if any of the towing vessel's required navigational safety equipment fails during a vo...

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

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

A tanker is loaded with 5,000 barrels of petroleum. The cargo was loaded at a temperature of 70°F, and the coefficient ...

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

How is an occluded front represented on a weather map?

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...

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

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

Yawing is angular motion of the vessel about what axis?

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships foghorn 5.5 seconds after the s...

A position that is obtained by applying estimated current and wind to your vessel's course and speed is a(n) __________...

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

With an increase in temperature the volume of flammable and combustible liquids __________.

The SS AMERICAN MARINER has drafts of: FWD 28'-00", AFT 30'-04". Use the white pages of the Stability Data Reference Bo...

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

After an item of required safety equipment on a towing vessel fails, the owner or Master must consider all of these fac...

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

Grade E combustible liquids have a flash point of __________.

Which statement about firefighting foam is TRUE?

Which type of projection is used to make a Mercator chart?

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

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

What type of liquid is used in the liquid P/V breaker?

Aboard ship, which term is given to the vertical flat plates running transversely and connecting the vertical keel to t...

The Light List shows that a navigational light has a nominal range of 5 miles and a height above water of 21 feet (6.4 ...

In which source could you find the number of a chart for a certain geographic area?

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

A purpose of inert gas systems aboard tank vessels is to __________.

If your vessel will list with equal readiness to either side, the list is most likely caused by which condition?

Your ship is proceeding on course 320°T at a speed of 25 knots. The apparent wind is from 30° off the starboard bow, sp...

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

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

A tank vessel transferring non-flammable hazardous cargo in bulk must display warning signs. These signs must _________...

Which vessel is NOT required to have a radiotelephone?

The buoy symbol printed on your chart is leaning to the northeast. What does this indicate?

At about GMT 1436, on 3 December, the lower limb of the Moon is observed with a sextant having an index error of 2.5' o...

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

How should cargo tank hatches be protected when the ullage opening is open and the tank NOT gas free?

Which signaling devices are required on inflatable liferafts?

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

Which is TRUE if the compass heading and the magnetic heading are the same?

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

Static electricity may be built up by the __________.

If heavy smoke is coming from the paint locker, what should be the FIRST firefighting response?

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

To find a magnetic compass course from a true course what must you apply?

What best describes for how long a gas-free test is good?

A drill must be conducted in the use of the line throwing appliance. How often is this drill required to be conducted?

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

How often are the time signals broadcast by WWV and WWVH transmitted?

Which statement about entering into a tank which has been sealed for a long time is TRUE?

How should latitude 54°18.9'N be written when preparing an AMVER report?

What does the description "Racon" beside an illustration on a chart mean?

In the IALA Buoyage System, what do buoys with alternating red and green horizontal bands indicate?

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

Which is the primary method by which water spray puts out fires?

An ECDIS is required to display which information?

Buoys which mark dredging areas are painted which color?

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

Which kind(s) of broadcasts are available through Safety NET?

In illustration D044NG below, what type of buoy is indicated by the letter A?

Which describes the wind circulation around a high-pressure center in the Northern Hemisphere?

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

Which defines the function of a spark arrestor?

What does a barometer measure?

What is an ebb current?

Fueling results in the collection of waste oil in drip pans and containers. Which is an approved method of disposing of...

Your vessel displaces 564 tons. The existing deck cargo has a center of gravity of 1.5 feet above the deck and weighs 4...

Which is TRUE when navigating a vessel?

In which country would you expect the channels to be marked with the IALA-B Buoyage System?

Which term(s) are in the category of "oil" as used in the Oil Pollution Regulations?

Which statement is TRUE concerning the "flash point" of a substance?

How are chart legends which indicate a conspicuous landmark printed?

Which of the following is a standard correction applied to the reading of an aneroid barometer?

How long must a "Declaration of Inspection" be kept on board?

Which signal is used by a rescue unit to indicate, "Avast hauling"?

Information about the pilotage available at Miami harbor may best be obtained from which publication?

To find the specific phase characteristic of a lighthouse on a sound of the United States you would use which reference...

You are operating a 1,000 GT non-oceangoing tankship. It must be equipped with or capable of which of the following?

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

In modern fathometers, what produces the sonic or ultrasonic sound waves?

What is the primary source of the earth's weather?

What can be done to prevent small oil spills on deck from going overboard?

Which is TRUE of a distress signal?

How can you estimate the position of a tropical storm's center?

When trying to sight a lighthouse you notice a glare from a town in the background. How does this affect the range at w...

Who has the authority to grant an alternate procedure for oil transfer operations?

Which statement is TRUE concerning a motor lifeboat?

Quadrantal error in a gyrocompass has its GREATEST effect on which of the following?

If the electronic chart is part of an ECDIS, it must display the minimum data required by IMO/IHO. Which is NOT require...

How many months after its expiration date may a Coast Guard credential be renewed without retaking the complete exam?

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

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

Which is TRUE for a sextant having an index error that is "on the arc"?

What is the period of validity of a Merchant Mariner Credential?

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

Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?

In shallow water, waves that are too steep to be stable, causing the crests to move forward faster than the rest of the...

Which document shows a vessel's nationality, ownership, and tonnage?

Which type of portable fire extinguisher is NOT designed for use on flammable liquid fires?

Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?

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

Which U.S. agency assigns an official number to a vessel?

Immediately after abandoning a vessel, lookouts should be posted aboard liferafts to look for __________.

You are on course 277°T and take a relative bearing of a lighthouse of 045°. What is the true bearing to the lighthouse...

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

Which is the requirement for the name and hailing port of a documented commercial vessel?

Which meets the requirement of an independent backup system on an electric start survival craft?

Which is TRUE as the temperature for a given mass of air increases?

You sight an isolated danger buoy with a white flashing light showing a group of two flashes. The buoy indicates you sho...

Which is an example of an anchor which has a stock?

When a vessel's LCG is aft of her LCB, how will the vessel respond?

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

During daylight savings time the meridian used for determining the time is located farther __________.

In illustration D038DG below, which letter indicates the tripping palm?

Where are the grab rails of a metal lifeboat normally located?

A ship is on course 195° at a speed of 15 knots. The apparent wind is from 40° on the port bow, speed 30 knots. What are...

Which radar control reduces weak echoes out to a limited distance from the ship?

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

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

The Light List indicates that a light has a nominal range of 18 miles and is 38 feet high. If the visibility is 6 miles ...

What kind of pressure systems travel in tropical waves?

What provides little or no indication that a vessel is dragging anchor?

If a vessel takes a sudden, severe list or trim from an unknown cause, which action should you take FIRST?

What wind reverses directions seasonally?

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

At 0820, you change course to 287°T. What time will you pass between Trestle “A” and Trestle “B”?