Mate of Unlimited Tonnage, Revision & Practice Exams

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

1. Coast Guard does not have a qualified inspector available
2. Coast Guard has the approved stability test results of a sister vessel ✓
3. The projected cost is unreasonable
4. The vessel is of a proven design

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

1. Repair the hose with a patch
2. Notify the terminal superintendent
3. Replace the hose ✓
4. Place a large drip pan under the leak and plug the scuppers

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

1. The Captain of the Port ✓
2. The Officer-in-Charge, Marine Inspection
3. The Area Commander
4. The nearest Coast Guard office

How can you indicate that your vessel is in distress?

1. Displaying a large red flag
2. Displaying three black balls in a vertical line
3. Continuously sounding the fog whistle ✓
4. Sounding five or more short and rapid blasts on the whistle

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

1. food and water
2. land
3. bad weather
4. survivors in the water ✓

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

1. The Coriolis force ✓
2. Differing atmospheric pressures
3. The mid-latitude, semi-permanent high
4. The prevailing westerlies

While navigating in fog off a coastline of steep cliffs, you hear the echo of the ship's foghorn 4 seconds after the signal was sounded. What is the distance to the shore?

1. 209 yards
2. 363 yards
3. 480 yards
4. 730 yards ✓

Which ending is NOT acceptable in a wire rope that is free to rotate when hoisting?

1. Liverpool eye splice ✓
2. Eye formed by clips
3. Eye formed with a pressure clamped sleeve
4. Poured socket

What power source actuates a solenoid valve?

1. Mechanical force
2. Electric current ✓
3. Hydraulic pressure
4. Air pressure

Which statement(s) is/are TRUE concerning radio equipment on towing vessels of 26 feet or more in length?

1. Each radio operator must hold an FCC-issued restricted operator's license, or higher.
2. Maintain a continuous listening watch on VHF channel 16 and the bridge-to-bridge channel.
3. The vessel must have a ship-radio-station license issued by the FCC.
4. All of the above. ✓

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

1. Tidal Current Tables ✓
2. Ocean Current Tables
3. Nautical Almanac
4. Tide Tables

The Master must maintain the Oil Record Book on board for which duration?

1. 1 month
2. 12 months
3. 24 months
4. 36 months ✓

Geographic range is the maximum distance at which a light may be seen under which conditions?

1. Existing visibility conditions, limited only by the intensity of the light
2. Permitting visibility conditions, limited only by interference from background lighting
3. Permitting visibility conditions, limited only by the curvature of the Earth ✓
4. Existing visibility conditions, limited only by the curvature of the Earth

When rendering assistance to personnel in the water a SAR helicopter utilizes a rescue sling for most extractions. In which case would the use of a litter be preferred?

1. When the person is suffering from fatigue
2. When the person has a pacemaker and static discharge is a concern
3. When the person is not trained in the use of the rescue sling
4. When the person is suffering from hypothermia ✓

Which action will affect the trim of a vessel?

1. Adding weight at the tipping center
2. Moving a weight forward ✓
3. Moving high weights lower
4. Removing weight at the tipping center

Your vessel is discharging containers from the main deck with the ship's cranes. Which of the following must be taken into account when calculating the center of gravity as the containers are discharged?

1. The vertical distance from the main deck plus the vertical distance to the head of the boom ✓
2. The vertical distance from the main deck plus the height of the container
3. The vertical distance from the main deck to the heel of the boom plus half the height of the container
4. The vertical distance from the main deck plus half the height of the container

For the purpose of training and drills, if reasonable and practicable, how frequently should rescue boats be launched with their assigned crew?

1. Once a week
2. Twice a year
3. Once a year
4. Once a month ✓

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

1. The current should be ignored.
2. The set should be applied to the second bearing.
3. The course and speed made good should be determined and used to advance the LOP. ✓
4. The drift should be added to the ship's speed.

Which term describes the strengthening of damaged bulkheads by using wood or steel?

1. Battening
2. Bracing
3. Shoring ✓
4. Blocking

After each reading of an oxygen indicator, the instrument should be purged with __________.

1. water
2. CO2
3. the tested compartment's air
4. fresh air ✓

If a powdered aluminum fire is being fought, which is the most effective extinguishing agent to use?

1. Dry powder ✓
2. CO2
3. Water fog
4. Steam

In accordance with regulations, ethylene oxide shall be loaded below what temperature?

1. 90°F
2. 70°F ✓
3. 51°F
4. its flash point

A fire starts on your vessel while refueling. Which action should you take FIRST?

1. Sound the general alarm ✓
2. Attempt to extinguish the fire
3. Determine the source of the fire
4. Stop the ventilation

You will be advised of any hazardous areas due to the fallout of a nuclear explosive by a message with which code word?

1. MERWARN ✓
2. FALLOUT
3. NUCLEAR
4. FALLWARN

Which device maintains a continuous graphic record of the heading of the vessel?

1. The fathometer
2. The auto pilot
3. The AIS system
4. The course recorder ✓

Regulations require that cargo pumprooms handling grades D and/or E liquid cargo only shall be fitted with ducts extended to the weather deck. How many ducts are required?

1. 1
2. 2 ✓
3. 3
4. 4

You are the officer on watch and have taken the final drafts of your vessel prior to getting underway. The vessel takes departure and proceeds outbound in a narrow channel. As the vessel increases speed and gains momentum, what will be the effect on the mean draft?

1. It will decrease in comparison to the sailing drafts
2. It will increase in comparison to the sailing drafts ✓
3. It will remain the same as the sailing drafts
4. It will increase if you decrease speed

Which defines the pitch of a propeller on a merchant vessel?

1. The positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without slip
2. The angle that the propeller makes with a free stream of water
3. The angle that the propeller makes with the surface of the water
4. The number of feet per revolution the propeller is designed to advance in still water without slip ✓

What does the helm command "meet her" mean?

1. Use rudder to check the swing ✓
2. Decrease the rudder angle
3. Steer more carefully
4. Note the course and steady on that heading

In order to carry a cargo of triethanolamine, what hull type is required?

1. I
2. II
3. III ✓
4. IV

When computing gross under keel clearance (UKC), what factor should NOT be considered?

1. Squat allowance
2. Heel allowance
3. Tidal residual allowance
4. Wind residual allowance ✓

What is a grade B flammable liquid?

1. Allyl alcohol
2. Paraldehyde
3. Chlorallylene ✓
4. Ethylene oxide

Using a scope of five, determine how many shots of chain you should put out to anchor in 5 fathoms of water?

1. 1
2. 2 ✓
3. 3
4. 5

In the illustration D041DG below, what does symbol 2 represent?

1. Beam limit
2. Bilge level
3. Baseline ✓
4. Displacement

Which vessel(s) is(are) required to comply with the vessel bridge-to-bridge radiotelephone regulations while navigating?

1. All passenger vessels of 50 gross tons or less, carrying one or more passengers
2. An intermittently manned floating plant under the control of a dredge
3. Power-driven vessels 20 meters in length or longer ✓
4. All towing vessels 25 feet or less in length

You receive a call from the U.S. Coast Guard addressed to all stations. The call begins with the words "Pan- Pan" (3 times). Which type of emergency signal would this be?

1. Safety signal
2. Urgency signal ✓
3. Distress signal
4. Red alert signal

You are preparing to take another vessel in tow. Which signal indicates, "Hawser is made fast"?

1. Three white star rockets at 1-minute intervals
2. An orange smoke signal
3. Firing of a green star signal ✓
4. Firing of a red star signal

What is the traditional signal for fire aboard ship?

1. More than 6 short blasts and 1 long blast on the whistle, and the same signal on the general alarm
2. Alternating short and long blasts on the ship's whistle
3. Continuous sounding of the ship's whistle and the general alarm for at least 10 seconds ✓
4. 1 short blast on the whistle

A man aboard a vessel, is signaling by raising and lowering his outstretched arms to each side. What does this signal indicate?

1. Danger, stay away
2. All is clear, it is safe to approach
3. A distress signal ✓
4. All is clear, it is safe to pass

In heavy seas how should the helmsman steer the motor lifeboat?

1. Into the seas slightly off the bow ✓
2. In the same direction as the seas
3. Broadside to the seas
4. In a series of figure-eights

When transferring survivors from an enclosed lifeboat to a rescue vessel, personnel on board the boat should take which action?

1. Climb on top of the boat while waiting for their turn to transfer to the rescue vessel
2. Enter the water and swim over to the rescue vessel
3. Remain seated inside and make the transfer one person at a time ✓
4. Remove their life preservers to make it easier to climb on board the rescue vessel

Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?

1. The position of underwater cables
2. The port side of the channel
3. A hazard to navigation
4. Safe water ✓

When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. Which term is given to this process?

1. Raising a light
2. Bobbing a light ✓
3. Obscuring a light
4. Checking a light

All persons or vessels within the lock area, including the lock approach channels, come under the authority of which person?

1. The dockmaster
2. The lockmaster ✓
3. The lock foreman
4. The dock captain

A vessel crossing a river on the Western Rivers, must keep out of the way of which power-driven vessel?

1. A power-driven vessel ascending the river without a tow
2. A power-driven vessel ascending the river with a tow
3. A power-driven vessel descending the river with a tow
4. All of the above ✓

When a buoy is in position only during a certain period of the year, where may the dates when the buoy is in position be found?

1. Light List ✓
2. On the chart
3. Coast Pilot
4. Notice to Mariners

Which is TRUE of a nun buoy in the IALA Region B system of buoyage?

1. It will be cylindrical in shape
2. It will be green in color
3. It will be left to port when entering from seaward
4. It will have an even number ✓

On 2 October 2023, you will be docking at the Dundalk Marine terminals in Baltimore, MD at the second low tide. The berth is located between NOAA reference tidal station #8574680 and subordinate station #8574821. What time (LST) will you be docking? Illustration D056NG

1. 1434 ✓
2. 1428
3. 1430
4. 1436

If a sound signal is emitted from the oscillator of a fathometer, and two seconds elapse before the returning signal is picked up, what depth of water is indicated?

1. 1248 fathoms
2. 1048 fathoms
3. 1648 fathoms
4. 824 fathoms ✓

Using sheet 25 in the Guidance Manual for Loading M.V. Grand Haven, determine the amount of ballast required in tank No. 5 (P & S) to maintain drafts of 17'-00" forward and 22'-06" aft for a vessel loaded with grain which has a test weight of 33 lbs.

1. 1010 tons each
2. 1025 tons each
3. 1045 tons each
4. 1070 tons each ✓

Which would be the BEST condition for your vessel to enter into pack ice?

1. The vessel is on an even keel
2. The vessel is trimmed slightly by the head
3. The vessel is ballasted so the forefoot is near the surface
4. The vessel has a drag of not more than 2 to 3 feet ✓

Advection fog holds longest over which portions of the lakes?

1. Southeast
2. Northeast
3. Northwest ✓
4. Southwest

Which statement is TRUE with respect to shiphandling procedures in ice?

1. The presence of a snow cover on the ice assists a vessel's progress through an ice field.
2. Go astern in ice with extreme care - always with rudder amidships. ✓
3. Never go "full astern" at any time while in ice.
4. Enter ice at medium speeds to reduce impact.

Your containership has a container displaying a hazardous cargo placard. The placard has the number 2206 on it. This indicates that it is carrying what cargo?

1. Hexanols
2. Xylenol
3. Propadiene, inhibited
4. Isocyanates, n.o.s. ✓

Who issues the certificate of loading required by each vessel carrying grain in bulk?

1. owner or charterer of the vessel
2. American Bureau of Shipping
3. shipper of the cargo
4. National Cargo Bureau ✓