Master Uninspected Fishing Vessels, Revision & Practice Exams

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

1. One week
2. Two weeks
3. One month ✓
4. Three months

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

1. Removing booms from stowage
2. Pre-operation checks and start-up
3. Luff, slew, and hoist operations
4. All of the above ✓

When is a lookout permitted to leave his station?

1. Only when properly relieved ✓
2. At the end of the watch
3. 15 minutes before the end of the watch
4. At any time

Why: The lookout's duty is continuous, so the station may be left only when properly relieved. Even at the end of the watch, the relief must actually take over first.

How does good housekeeping prevent fires on a vessel?

1. Allowing better access in an emergency
2. Eliminating trip hazards
3. Improving personnel qualifications
4. Eliminating potential fuel sources ✓

Why: Fire needs fuel, heat, and oxygen. Good housekeeping removes accumulated trash, oily rags, and spilled flammables, the fuel side of the fire triangle, so ignition sources have nothing to start on.

If you have to jump in the water when abandoning ship, your legs should be in which position?

1. Your legs should be held as tightly against your chest as possible
2. Your legs should be spread apart as far as possible
3. Your legs should be extended straight down and crossed at the ankles ✓
4. Your legs should be in a kneeling position

Why: The proper jump position is legs straight down and crossed at the ankles, one arm holding the lifejacket down and the other covering nose and mouth. This protects the body on entry and keeps the jacket from riding up.

What is the purpose of rigging frapping lines on lifeboat falls?

1. To give the occupants a safety line when the boat is being lowered from the embarkation level
2. To reduce the violent swing of the lifeboat at the embarkation level when the tricing pendants are released ✓
3. To bring the lifeboat close alongside the rail in the embarkation position in order for passengers and crew to board
4. To secure the lifeboat in the davits when in the stowed position

Heave is motion along which axis?

1. The vessel's centerline axis
2. The vessel's transverse axis
3. The vessel's longitudinal axis
4. The vessel's vertical axis ✓

When the height of the metacenter is greater than the height of the center of gravity, the upright equilibrium position is stable and stability is __________.

1. unstable
2. positive ✓
3. neutral
4. negative

By what means are indications of the master gyrocompass sent to remote repeaters?

1. by transmitter ✓
2. by azimuth motor
3. by phantom element
4. by follow-up system

Which is TRUE as the temperature of the air reaches the dew point?

1. Fog may form ✓
2. Rain must develop
3. It begins to snow
4. Water freezes

Which is the region containing 3/4 of the mass of the atmosphere and to which are confined such phenomena as clouds, storms, precipitation and changing weather conditions?

1. The tropopause
2. The troposphere ✓
3. The stratopause
4. The stratosphere

Why: The troposphere, the lowest layer of the atmosphere, contains about three quarters of its mass and nearly all its water vapor, so clouds, precipitation, storms, and changing weather occur there.

Which defines the term relative humidity?

1. The ratio of the actual vapor content at the current temperature to the air's vapor holding capability ✓
2. The maximum vapor content the air is capable of holding
3. The relation of the moisture content of the air to barometric pressure
4. The maximum vapor content the air is capable of holding at 70 degrees

Lines drawn through points on the Earth having the same atmospheric pressure are known by which term?

1. Seismics
2. Isobars ✓
3. Millibars
4. Isothermal

Which describes the level of database information which cannot be removed from the ECDIS display and consists of information which is required at all times in all geographic areas and under all circumstances?

1. System electronic nautical chart
2. Standard display information
3. Chart display information
4. Display base information ✓

Ascending and descending air masses with different temperatures is part of an important heat transmitting process in our atmosphere. Which term is given to this process?

1. Convection ✓
2. Barometric inversion
3. Radiation
4. Conduction

If the current and wind are in opposite directions, what does the sea surface indicate?

1. The surface indicates a greatly reduced wind speed
2. The surface indicates a lower wind speed than what really exists
3. The surface indicates a higher wind speed than what really exists ✓
4. The surface does not change, each cancels the other

What does the expression "the air is saturated" mean?

1. The relative humidity is 100% ✓
2. The precipitation has commenced
3. The cloud cover is 100%
4. The vapor pressure is at its maximum for the prevailing temperature

The principal vertical circle is that great circle on the celestial sphere that passes through which of the following?

1. The poles and Greenwich
2. The zenith and the celestial body
3. The zenith and the north and south poles ✓
4. The zenith and is parallel to the horizon

The path that a vessel is expected to follow, represented on a chart by a line drawn from the point of departure to the point of arrival, is known by which term?

1. Track line ✓
2. DR plot
3. Estimated course
4. Heading

How does the standard magnetic compass heading differ from the true heading?

1. By latitude
2. By variation
3. By compass error ✓
4. By deviation

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

1. Excessive rolling ✓
2. Excessive yawing
3. Excessive pitching
4. No change should be evident

According to the Lifesaving regulations in Subchapter W, fire and abandon ship drills must be held within 24 hours of leaving port if the percentage of the crew that has not participated in drills aboard that particular vessel in the prior month exceeds which percentage?

1. 5%
2. 10%
3. 25% ✓
4. 40%

Why: Subchapter W requires fire and abandon-ship drills within 24 hours of leaving port whenever more than 25 percent of the crew did not participate in drills aboard that vessel during the previous month.

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

1. Hurricanes
2. A nuclear fallout environment
3. A fire and toxic environment ✓
4. A drop greater than 10 feet

You are at sea and have received a General Emergency message announcing the outbreak of war in Europe. You are directed to comply with the instructions in NGA (NIMA) PUB 117, Chapter Eight. Which statement is TRUE?

1. You should only enter a port in the danger zone during hours of darkness
2. You should attempt to coordinate with the Shipping Control Team ✓
3. When over 200 miles from a port in the danger zone, you should not darken ship
4. If on a coastwise voyage along the east coast of the U.S., you should put into the nearest port

What is the purpose of a striking plate?

1. It provides a surface for applying force on machinery
2. It prevents valve stem over-travel
3. It provides a landing surface for the sounding bob ✓
4. It absorbs machinery vibration

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

1. As strongbacks
2. As gaskets ✓
3. As wedges
4. As shores

Pressure gradient is a measure of __________.

1. pressure difference over horizontal distance ✓
2. vertical pressure variation
3. a high-pressure area
4. pressure difference over time

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

1. high water ✓
2. low water
3. lower low water
4. tide level

Why: The charted shoreline in tidal areas is the mean high water line, the average of the high tides, so charted land may be surrounded by water at lower stages. Soundings, by contrast, use a low-water datum.

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

1. Line the course pen up on 0-degree mark
2. Adjust the chart paper to indicate GMT ✓
3. Set the zone pen to the far right of the paper
4. Test the electrical gain to the thermograph pens

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

1. A surface warmer than the dew point of the air
2. Available nuclei in the air
3. Moderate winds
4. Clear skies ✓

Why: Dew forms on clear, calm nights when surfaces radiate heat away and cool below the air's dew point; clouds blanket that radiational cooling. A surface warmer than the dew point would prevent condensation, and wind mixes the air.

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

1. 000°
2. 090°
3. 180°
4. 270° ✓

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

1. Height ✓
2. Temperature
3. Wind speed
4. Latitude

Why: Aneroid barometer readings are corrected for the instrument's height above sea level so they represent sea-level pressure. Temperature and latitude corrections apply to mercurial barometers, not aneroids.

In shallow water, waves that are too steep to be stable, causing the crests to move forward faster than the rest of the wave. This occurrence describes which term?

1. Surfers
2. White caps
3. Breakers ✓
4. Rollers

The Light List indicates that a dayboard is a type TR-SY. Which action should you take?

1. Expect a daymark with no lateral significance
2. Look for a dayboard of type TR-TY to form a range
3. Leave it to port when southbound on the Atlantic portions of the ICW ✓
4. Pass it close aboard on either side

Why: On ICW dayboards the yellow symbol governs: a yellow square means treat the aid as a port-hand mark, keeping it to port when following the ICW in the conventional direction, which is southbound along the Atlantic coast.

You are 15 feet off a pier and docking a vessel using only a bow breast line and stern breast line. Once the slack is out of both lines you begin to haul in on the bow breast line. What is the effect on the vessel?

1. The stern will come in and the bow will remain the same distance off the pier.
2. The bow will come in and the stern will go out.
3. The bow will come in and the stern will remain the same distance off the pier. ✓
4. The bow and stern come in equally closer toward the pier.

Why: A breast line leads at right angles to the pier and moves only its own end of the vessel. Hauling on the bow breast pulls the bow alongside while the stern breast simply holds the stern at its existing distance.

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

1. 90 days
2. 6 months
3. 30 days
4. 12 months ✓

Why: Merchant mariner credentials, including apprentice mate (steersman), may be renewed at any time within 12 months before, or after, expiration under 46 CFR Part 10 renewal provisions.

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

1. Oil
2. Garbage ✓
3. Noxious liquid substances
4. Air pollutants

Why: MARPOL Annex V governs garbage. Oil is Annex I, noxious liquid substances Annex II, and air pollution Annex VI.