Mate Uninspected Fishing Vessels, Revision & Practice Exams

If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obtain true headings?

1. The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true ✓
2. The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
3. The readings are too low and the amount of the error must be subtracted from the compass to obtain true
4. The readings are too high and the amount of the error must be subtracted from the compass to obtain true

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

1. raising the boom ✓
2. rigging a back stay
3. taking all slack out of the preventer
4. increasing the mechanical advantage of the cargo purchase

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

1. To reduce the possibility of stress fractures
2. To reduce the water pressure on the hull
3. To prevent progressive flooding
4. To reduce the water leaking around the plugs ✓

How is an occluded front represented on a weather map?

1. A dashed blue line
2. An alternate red and blue line
3. A blue line
4. A purple line ✓

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

1. Semidiurnal ✓
2. Mixed
3. Interval
4. diurnal

The dew point is reached when which condition occurs?

1. The temperature of the air equals the temperature of the seawater
2. The air becomes saturated with water vapor ✓
3. The relative humidity reaches 50%
4. The atmospheric pressure is 14.7 lbs. per square inch

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

1. The force increases as the latitude decreases, being maximum at the geographic equator ✓
2. The force increases as the latitude increases, being maximum at the geographic poles
3. The force remains the same at all latitudes
4. The force is greatest when a vessel is near the Earth's magnetic equator

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

1. A Morse (A) white light
2. A composite group-flashing light ✓
3. A yellow light
4. A fixed red light

Which clouds are described as high clouds, composed of small white flakes or scaly globular masses, and often banded together to form a "mackerel sky"?

1. Cumulonimbus
2. Cirrus
3. Altostratus
4. Cirrocumulus ✓

The two factors which make underwater hull repair difficult are accessibility and which other factor?

1. The threat of progressive flooding
2. The shape of the hull
3. The availability of tools
4. The pressure exerted by the water ✓

Which is an advantage of an ABC dry chemical over a carbon dioxide extinguisher?

1. Lack of toxicity
2. Greater multipurpose extinguishing ability ✓
3. Less damage to electrical components
4. Burn-back protection

A fire starts in a switchboard due to a short circuit. This is which class of fire?

1. Class A
2. Class B
3. Class C ✓
4. Class D

You should NOT use a power tool if which condition exists?

1. It has a three-prong plug
2. The power source is alternating current
3. The insulation of the power wires is worn ✓
4. Hand tools can be used instead

Which is TRUE concerning the length of a wave?

1. It is measured from crest to crest ✓
2. It is measured from crest to trough
3. It is the length of the wave's trough
4. It is the length of the wave's crest

You are planning to anchor in an area where several anchors have been lost due to fouling. What precaution should you take?

1. Only anchor using both anchors not set in bottom
2. Anchor with scope of 8 or more to 1
3. Fit a crown strap and work wire to the anchor ✓
4. Use a stern anchor with a scope of 8 or more to 1

During a SAR helicopter evacuation which of the following describes the proper donning of a rescue sling?

1. The person sits in the sling with their hands clasped across the chest while facing the winch hook
2. The loop of the sling passes across the chest and under the arms while facing away from the winch hook
3. The loop of the sling passes behind the back and under the arms while facing the winch hook ✓
4. The person steps onto the sling grasping the hoist line for support while facing away from the winch hook

How does a drift lead indicate that the vessel is dragging anchor?

1. The line is slack and motionless
2. The line is leading out perpendicular to the centerline
3. The line is taut and leading under the hull
4. The line is taut and leading forward ✓

Regardless of local requirements, when in a U.S. port, all oil spills must be reported to which of the following agencies?

1. National Response Center (USCG) ✓
2. Environmental Protection Agency
3. Minerals Management Service
4. All of the Above

Which item in illustration D034NG below shows a flashing light?

1. A
2. B
3. C ✓
4. D

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

1. 315°
2. 247° ✓
3. 197°
4. 335°

You are conducting trials to determine the maneuvering characteristics of your vessel. While making a turn, you take ranges and bearings of an isolated light. The results are shown in illustration D034DG below. What is the transfer for a turn of 90°?

1. 355 yards
2. 400 yards ✓
3. 475 yards
4. 510 yards

Open ullage holes in tanks which are not gas-free must be protected by __________.

1. warning signs
2. flame screens ✓
3. PV valves
4. stop-check valves

What must be present in order for combustion to occur inside a piping system such as a vapor collection header in a marine emission control system?

1. Ignition
2. Fuel
3. Oxygen
4. All of the above ✓

When possible, what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?

1. Close the fuel line valve. ✓
2. Check the spread of the fire with foam.
3. Cast the barge off the wharf.
4. Secure all engine room doors, hatches, and vents.

The Light List shows that a navigational light has a nominal range of 22 miles and a height above water of 48 feet (14.6 meters). Your height of eye is 35 feet (10.7 meters) and the visibility is 20.0 miles. At what approximate range will you first sight the light?

1. 10.5 nm
2. 13.2 nm
3. 14.7 nm ✓
4. 32.0 nm

"Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding ________.

1. northerly on the Pacific Coast ✓
2. northerly on the Atlantic Coast
3. easterly on the Gulf Coast
4. None of the above

Under the IALA Buoyage Systems, which is TRUE of the topmark of a red and white vertically-striped buoy?

1. It shall be a single red sphere ✓
2. It shall be X-shaped
3. It shall be two black spheres
4. It shall be a single red cone

Your longitude is 179°59'W. The LMT at this longitude is 23h 56m on the 4th day of the month. Six minutes later, your position is 179°59'E longitude. What is your LMT and date?

1. 00h 02m on the 4th
2. 00h 02m on the 6th ✓
3. 23h 50m on the 5th
4. 00h 02m on the 5th

An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?

1. Square
2. Diamond with a cross ✓
3. Open-faced diamond
4. Circle

What do widely spaced isobars on a weather map indicate?

1. The probability of tornados
2. Ice, snow or frozen rain
3. High winds
4. Gentle breezes ✓

A sylphon cell is a part of which instrument?

1. A barograph ✓
2. A thermograph
3. A maximum thermometer
4. A hygrometer

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

1. against the flow of the current ✓
2. at right angles to the flow of the current
3. in the same direction as the flow of the current
4. over slack water

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

1. west
2. west in west longitude and east in east longitude
3. east ✓
4. east in west longitude and west in east longitude

It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at which time interval?

1. Every 3 hours ✓
2. Every 6 hours
3. Every hour
4. Every 8 hours

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

1. Only after a formal complaint has been filed with the OCMI against the vessel
2. You will be contacted when deemed necessary by the Regional Inspection Center
3. It is done at random from a Coast Guard patrol boat
4. Apply in writing to the Officer in Charge of Marine Inspection (OCMI) ✓

An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter "M" (Mike). What does this signal signify?

1. I am altering my course to port
2. I am altering my course to starboard
3. My vessel is stopped and making no way through the water ✓
4. I am operating astern propulsion

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

1. Yaw ✓
2. Sway
3. Roll
4. Surge

One of your crew members falls overboard from the starboard side. You should IMMEDIATELY take which action?

1. Begin backing your engines
2. Position your vessel to windward and begin recovery
3. Apply left rudder
4. Throw the crew member a life preserver ✓

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

1. Orange smoke signal ✓
2. Horizontal motion of a flag
3. Green star rocket
4. Red star rocket

The lever shown in illustration D013SA below is operated when a lifeboat is in which of the following positions?

1. When waterborne ✓
2. While at the embarkation deck
3. As it is being lowered to sea level
4. In the secured position in the davit

When using an echo sounder in deep water, it is NOT unusual to encounter which situation?

1. To have to recalibrate every couple of days due to inaccurate readings
2. Receiving a first return near the surface during the day, and a strong return at about 200 fathoms (366 meters) at night
3. Receiving a strong return at about 200 fathoms (366 meters) during the day, and one nearer the surface at night ✓
4. Receiving false echoes at a constant depth day and night

Which uninspected vessel is required to carry an efficient daylight signaling lamp?

1. 299 GT towing vessel on a coastwise voyage
2. 99 GT towing vessel on Inland Waters
3. 199 GT towing vessel on a coastwise voyage
4. 199 GT towing vessel on an international voyage ✓

Which government agency publishes the U.S. Coast Pilot?

1. National Geospatial-Intelligence Agency
2. National Oceanic and Atmospheric Administration ✓
3. U.S. Coast Guard
4. Army Corps of Engineers

What enables you to estimate the bearing of a storm's center?

1. Buys Ballot's Law ✓
2. The left-hand rule
3. Pascal's Law
4. An educated guess

In a weather report, which defines the term "visibility"?

1. The distance in miles at which prominent objects are identifiable by the unaided eye ✓
2. The distance an observer can see with the unaided eye
3. The distance an observer can see a prominent object with a telescope or binoculars
4. The ability to identify an object at night utilizing binoculars

Uninspected vessels must have one approved ring life buoy on board if the vessel length is over how many feet?

1. 6 feet
2. 16 feet
3. 26 feet ✓
4. 36 feet