Master < 100 GRT (Near Coastal), Revision & Practice Exams

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

1. only if they have operational radar
2. in sight of one another in fog
3. navigating in or near an area of restricted visibility ✓
4. only if they are showing special purpose lights

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

1. One all-round white light
2. Sidelights and a stern light ✓
3. A masthead light, sidelights, and a stern light
4. Only the outboard sidelight and a stern light

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

1. A vessel constrained by her draft ✓
2. A vessel moored over a wreck
3. A vessel aground
4. A vessel dredging

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

1. which has separate sidelights carried on the outboard extremes of the vessel's breadth
2. less than 12 meters in length ✓
3. engaged in fishing
4. less than 20 meters in length

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

1. vessel on pilotage duty
2. law enforcement vessel
3. sailing vessel ✓
4. vessel engaged in fishing

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

1. one prolonged blast ✓
2. four short blasts
3. one long blast
4. no signal is required.

INLAND ONLY You are underway in a narrow channel, and are being overtaken by another power-driven vessel. The overtaking vessel sounds the signal indicating his intention to pass you on your starboard side. What is your signal of agreement?

1. one short blast ✓
2. one prolonged, one short, one prolonged, and one short blast in that order
3. two prolonged blasts
4. two prolonged followed by two short blasts

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

1. The vessel will alter course to port
2. The vessel intends to pass starboard to starboard
3. The vessel is altering course to port ✓
4. The vessel intends to alter course to port

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

1. The vessel's searchlight ✓
2. A red star shell
3. A burning barrel
4. An orange smoke signal

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

1. A vessel restricted in its ability to maneuver, at anchor
2. A sailing vessel underway
3. A vessel not under command
4. All of the above ✓

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 steer to pass 2.5 miles abeam of the light, leaving it to starboard?

1. 002°
2. 349° ✓
3. 323°
4. 336°

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

1. Stop your engine until the rough weather passes
2. Ignore it, this is acceptable in rough weather
3. Decrease your engine speed ✓
4. Increase your engine speed

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

1. Sludge
2. Fuel oil
3. Oil refuse
4. All of the above ✓

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

1. 1 year
2. 2 years
3. 3 years
4. 5 years ✓

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

1. The center of buoyancy ✓
2. The center of gravity
3. The center of effort
4. The center of flotation

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

1. Make it more difficult to breathe
2. Make you more buoyant
3. Help preserve body heat ✓
4. Reduce your body heat

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

1. Composite display
2. Unstabilized display
3. Relative display
4. Stabilized display ✓

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

1. course over the ground ✓
2. route
3. track
4. heading

If the situation arose where it became necessary to tow a disabled vessel, which statement is TRUE concerning the towing line?

1. There should be a catenary so the line dips into the water. ✓
2. The towing line between the two vessels should be clear of the water.
3. The towing line should be taut at all times between the vessels.
4. None of the above.

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

1. Inches of mercury and centimeters
2. Inches of mercury and millibars ✓
3. Inches of mercury and millimeters
4. Feet of mercury and millibars

A person who observes an individual fall overboard should do which of the following?

1. Go to the control room for the distress flares
2. Run to the radio room to send an emergency message
3. Immediately jump into the water to assist the individual
4. Call for help and keep the individual in sight ✓

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

1. 16 ✓
2. 22
3. 18
4. 13

Which visual distress signal is acceptable for daylight use only?

1. Self-contained rocket-propelled parachute red flare
2. Red aerial pyrotechnic flare
3. Hand-held orange smoke distress flare ✓
4. Hand-held red flare

Which action should be taken once fueling has been completed?

1. Open the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment
2. The engine should be started immediately to prevent vapor lock in the fuel line
3. The fuel tank fill pipe should be left open to allow vapors to vent from the tank
4. All hatches should be opened, and all compartments should be ventilated ✓

What benefit is a weather bulletin to a mariner?

1. It provides a legal reason to cancel a projected voyage.
2. It allows the mariner to make long term weather forecasts.
3. It gives the mariner time to prepare for weather changes. ✓
4. It is of little benefit since the weather changes frequently and rapidly.

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

1. The vessel's LCG ✓
2. The righting moments
3. The vertical moments
4. The inclining moments

Which knot shown in illustration D030DG below represents a square knot?

1. H
2. P
3. R
4. W ✓

The Federal Water Pollution Control Act requires the person in charge of a vessel to immediately notify the Coast Guard as soon as he knows of any oil discharge. Failure to notify the Coast Guard can lead to a monetary fine and imprisonment up to what duration?

1. 5 years ✓
2. 3 years
3. 2 years
4. 1 years

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

1. Winter North Atlantic load line
2. Deck line ✓
3. Plimsoll line
4. Fresh Water load line

Who carries the total responsibility for shipping and discharging the seamen on a vessel?

1. U.S. Coast Guard
2. U.S. Custom Service
3. Steamship company
4. Master of the vessel ✓

Unless otherwise stated, the term "approved" when applied to a small passenger vessel's equipment, means approved by which organization?

1. American Bureau of Shipping
2. Commandant of the Coast Guard ✓
3. Congress of the United States
4. Board of Fire Underwriters

Which statement is TRUE with reference to small passenger vessels cooking and heating equipment?

1. It shall be suitable for marine use
2. The system cannot use gasoline
3. It may use liquefied petroleum gas
4. All of the above ✓

Each vessel shall be dry-docked or hauled out at intervals not to exceed 2 years if operated in salt water for a total of more than __________. (small passenger vessel regulations)

1. 3 months in any 12-month period since it was last hauled out ✓
2. 6 months in the 3-year period since it was last hauled out
3. 12 months in the 5-year period since it was last hauled out
4. whenever ownership or management changes

How do you know how many passengers you may carry? (small passenger vessel regulations)

1. As many as possible
2. Use your own judgment
3. The amount on the Certificate of Inspection ✓
4. No more than 40 passengers

Before issuing an initial Certificate of Inspection, who must consider the construction arrangement and equipment of a vessel to be acceptable? (small passenger vessel regulations)

1. U.S. Salvage Marine Surveyor
2. American Bureau of Shipping Surveyor
3. Officer in Charge, Marine Inspection ✓
4. U.S. Customs Collector

A vessel behaves as if all of its weight is acting downward through the center of gravity, and all its support is acting upward through which point?

1. The center of buoyancy ✓
2. The keel
3. The tipping center
4. The amidships center section

Regulations define the bulkhead deck as __________. (subdivision and stability regulations)

1. the lowermost deck to which transverse watertight bulkheads extend
2. the uppermost deck to which transverse watertight bulkheads extend ✓
3. the uppermost complete deck
4. any deck extending from stem to stern

Which is TRUE of paints and solvents on a vessel?

1. They must be stored in a gear locker
2. They should be returned to the paint locker after each use ✓
3. They must be covered at all times to protect from ignition sources
4. They should be stored safely at the work site until work is completed

Which extinguishing agent is/are suitable to combat a class B fire in an engine compartment?

1. Carbon dioxide
2. Dry chemical
3. Foam
4. All of the above ✓

If you must swim through an oil fire, which action should be avoided?

1. Wear as much clothing as possible
2. Cover eyes with one hand when entering the water
3. Swim with the wind ✓
4. Enter the water feet first

If you have a fire in the engine room, what is the FIRST action you should take?

1. Discharge the fixed CO2 system into the engine room
2. Secure the fuel supply and ventilation to the engine room ✓
3. Maneuver your vessel into the wind
4. Have all of your crew get into the liferaft

Which statement is TRUE concerning life preservers (Type I personal flotation devices)?

1. Life preservers must always be worn with the same side facing outwards to float properly.
2. Life preservers are designed to turn an unconscious person's face clear of the water. ✓
3. Lightly stained or faded life jackets will fail in the water and should not be used.
4. Buoyant vests may be substituted for life jackets.

Which is TRUE concerning fixed ballast, on small passenger vessels?

1. Moved temporarily for examination or repair of the vessel, when done under the supervision of an inspector ✓
2. Only moved under the supervision of the owner, Master or shipyard
3. Discharged or moved at any time
4. Moved under any condition except extreme emergency

On vessels that are required to have fixed carbon dioxide fire extinguishing systems, the controls to operate the system shall be installed in an accessible location. Which is the required location? (small passenger vessel regulations)

1. Outside the space protected ✓
2. Inside the space protected
3. In a padlocked waterproof metal box
4. Locally at the carbon dioxide cylinders

Determine the approximate geographic visibility of an object, with a height above the water of 85 feet (25.9 meters), for an observer with a height of eye of 60 feet (18.3 meters).

1. 18.4nm
2. 19.9nm ✓
3. 20.8nm
4. 21.5nm

Which defines the term charted depth?

1. The average height of all low waters at a place
2. The vertical distance from the chart sounding datum to the ocean bottom, plus the height of tide
3. The vertical distance from the chart sounding datum to the ocean bottom ✓
4. The average height of water over a specified period of time

What does a steep barometric gradient indicate?

1. Light winds
2. Strong winds ✓
3. Precipitation
4. Calms

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

1. Clearing weather, possibly accompanied by high winds ✓
2. Heavy rain or severe thundershowers
3. Clear weather with no wind, but the possibility of rain or snow within 24 hours
4. Deteriorating weather with rain or snow

A line of position is __________.

1. the position of your vessel
2. not used in a running fix
3. a line on some point of which the vessel may be presumed to be located ✓
4. a line connecting two charted objects

On 10 November 2023 at 2130, you are inbound at Charleston Harbor Entrance Buoy “10” (ACT6611). Your vessel will transit 15nm and make good 12.5 knots to a berth where the nearest tidal current station is ACT6706. What will be the direction and velocity of the current as you approach the dock? Illustration D058NG

1. 2.0kts at 172°T ✓
2. 0.4kts at 104°T
3. 0.4kts at 280°T
4. 2.0kts at 335°T

Aboard small passenger vessels the number of children's life jackets carried must be at least what percentage of the total number of persons aboard?

1. 4%
2. 7.5%
3. 10% ✓
4. 15%

You are mooring to a buoy. How should you make your approach?

1. The current should be broad on the bow
2. The current should be dead ahead ✓
3. The current should be on the beam
4. Place the current astern and drift to the buoy

Which topmark shown in illustration D023NG below identifies an isolated danger?

1. A
2. B ✓
3. C
4. D

Which condition would most likely result in fog?

1. Airborne dust particles
2. Dew point falling below the air temperature
3. Warm moist air blowing over warm water
4. Warm moist air blowing over cold water ✓

BOTH INTERNATIONAL & INLAND You are approaching another vessel at night. You can see both red and green sidelights and, above the level of the sidelights, three white lights in a vertical line. Which vessel is required to have these lights?

1. a vessel not under command
2. a vessel trawling
3. a vessel towing a tow more than 200 meters astern ✓
4. a vessel underway and dredging

BOTH INTERNATIONAL & INLAND Which of the following in illustration D086RR below represents the length of a vessel as defined by the Rules?

1. A
2. B
3. C ✓
4. D

BOTH INTERNATIONAL & INLAND Your power-driven vessel is stopped and making no way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is TRUE?

1. You should be showing the lights or shapes for a vessel not under command.
2. Your vessel is the give-way vessel in a crossing situation. ✓
3. You should be showing the lights or shapes for a vessel restricted in her ability to maneuver.
4. The other vessel must give-way since your vessel is stopped.

BOTH INTERNATIONAL & INLAND A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. What shall she reduce speed to?

1. moderate speed
2. half speed
3. safe speed
4. bare steerageway ✓

INLAND ONLY While underway and in sight of another power-driven vessel forward of your beam, more than 0.5 mile away, you put your engines full speed astern. Which statement concerning whistle signals is TRUE?

1. You need not sound any whistle signals. ✓
2. You must sound whistle signals only if the vessels are meeting.
3. You must sound one blast if backing to starboard.
4. You must sound three short blasts on the whistle.

BOTH INTERNATIONAL & INLAND Your vessel is underway in reduced visibility. You hear the fog signal of another vessel about 30° on your starboard bow. If danger of collision exists, which action(s) are you required to take?

1. Alter course to port and pass the other vessel on its port side
2. Alter course to starboard to pass around the other vessel's stern
3. Reduce your speed to the minimum at which it can be kept on course ✓
4. Slow your engines and let the other vessel pass ahead of you

BOTH INTERNATIONAL & INLAND When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?

1. The stand-on vessel is never allowed to take action
2. When the two vessels are less than half a mile from each other
3. When collision is imminent
4. When the give-way vessel is not taking appropriate action to avoid collision ✓

INLAND ONLY You are on power-driven vessel "A" and power-driven vessel "B" desires to overtake you on the starboard side as shown in illustration D038RR below. After the vessels have exchanged one blast signals what action should you take?

1. Hold course and speed ✓
2. Slow your vessel until vessel "B" has passed
3. Alter course to the left
4. Alter course to the left or right to give vessel "B" more sea room

BOTH INTERNATIONAL & INLAND A vessel aground in fog shall sound, in addition to the proper anchor signal, which of the following?

1. Three strokes on the bell before and after the anchor signal ✓
2. Three strokes on the gong before and after sounding the anchor signal
3. Four short blasts on the whistle
4. One prolonged and one short blast on the whistle

INLAND ONLY What lights are required for a barge being pushed ahead, not being part of a composite unit?

1. Sidelights and a special flashing light ✓
2. Sidelights, a towing light, and a stern light
3. Sidelights, a special flashing light, and a stern light
4. Sidelights and a stern light

Your vessel is port side to a pier with a spring line led aft from the bow. How will the vessel respond in calm weather, with the engines ahead and hard left rudder?

1. The bow will slip out and the stern in
2. Both the bow and stern will move out
3. Both the bow and stern will move in
4. The bow will swing in and the stern out ✓

Your ship is sinking rapidly. A container containing an inflatable liferaft has bobbed to the surface upon functioning of the hydrostatic release. Which action should you take?

1. Manually open the container and inflate the liferaft with the hand pump.
2. Cut the painter line so it will not pull the liferaft container down.
3. Take no action because the painter will cause the liferaft to inflate and open the container. ✓
4. Swim away from the container so you will not be in danger as it goes down.

What describes a flood current?

1. Horizontal movement of the water toward the land after low tide ✓
2. Horizontal movement of the water away from the land following high tide
3. Horizontal movement of the water toward the land after high tide
4. Horizontal movement of the water away from the land following low tide

When a dual-purpose marking is used, how should the mariner following the Intracoastal Waterway be guided?

1. By the shape of the aid
2. By the shape of the yellow mark ✓
3. By the color of the top band
4. By the color of the aid

You are steaming in a heavy gale and find it necessary to heave to. Under most circumstances, how is this best accomplished?

1. Taking the sea fine on the bow and reducing the speed ✓
2. Increasing the speed and taking the sea broad on the bow
3. Going slow astern and taking the seas on the quarter
4. Stopping the engines and drifting beam to the seas

You are going astern (single-screw, right-handed propeller) with the anchor down at a scope of twice the depth of the water. As the anchor dredges, how should you expect the vessel to react?

1. The stern will walk to the same side as the anchor being used
2. The stern will walk to port but at a reduced rate ✓
3. The stern will walk to port at a faster rate than normal
4. The vessel will back in a straight line only if the starboard anchor is deployed

Which term describes the time required to incline the vessel from port to starboard and back to port again?

1. Initial stability
2. Range of stability
3. Inclining moment
4. Rolling period ✓

You are approaching the first of two drawbridges that span a narrow channel. The second drawbridge is close to the first. Which signals should you sound?

1. Sound the request-for-opening signal and, after the bridge acknowledges it, sound the request-for- opening signal for the second bridge. ✓
2. Sound the request-for-opening signal for the first bridge only, who will notify the second bridge of your approach
3. Sound the request-for-opening signal twice in succession to indicate you must pass through both bridges
4. Sound the request-for-opening signal, pause for about 10 seconds, then sound two prolonged blasts.

The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to accomplish which task?

1. To get the most water possible on the fire
2. To shield firefighters from radiant heat
3. To break up burning material ✓
4. To drive heat and smoke ahead of the firefighters

Which of the following is a rope ladder with wooden rungs?

1. A life ladder
2. A Jacob's ladder ✓
3. A drop ladder
4. A jury ladder

When improperly tied, which knot shown in illustration D030DG below is called a granny or thief's knot?

1. F
2. M
3. R
4. W ✓

On small passenger vessels which is TRUE concerning all connections to electrical conductors?

1. Connections must be inspected annually by the Coast Guard
2. Connections must be made within enclosures ✓
3. Connections must be served and parceled with the lay
4. Connections must be installed only by a licensed marine electrician

You operate a harbor craft on inland waters exclusively. If you regularly service or contact foreign flag vessels in the course of business, which statement is TRUE?

1. Your crew must have identification credentials. ✓
2. A customs official must be on board when contacting a foreign flag vessel.
3. All contacts with a foreign flag vessel must be reported to the U.S. Coast Guard.
4. Your vessel must be inspected.