Master < 100 GRT Rivers, Revision & Practice Exams

To avoid error, how should you read the scale of an aneroid barometer?

1. With your eye slightly above the meniscus
2. With your eye to the right of the pointer
3. With your eye to the left of the pointer
4. With your eye directly in front of the pointer ✓

The Light List indicates that a dayboard is a type KGW. You should take which action?

1. Look for another daymark to form the range ✓
2. Look for a green and white diamond
3. Leave it to port when southbound on the Atlantic Coast ICW
4. Pass it close aboard on either side

A quick and rapid motion of a vessel in a seaway is an indication of a(n) __________.

1. excessive free surface
2. large GM ✓
3. high center of gravity
4. small GZ

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

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

Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?

1. Crossing the spring lines ✓
2. Slacking bow and stern lines
3. Slacking all forward running lines while keeping all after running lines taut
4. Doubling up on spring or breast lines

Which is a major advantage of the round turn maneuver in a man overboard situation?

1. It can be used in reduced visibility
2. It is easy for a single-screw vessel to perform
3. It is the fastest method ✓
4. It requires the least shiphandling skills to perform

While passing through Memphis, the weather report on the TV news indicates that a cold front is crossing western Kentucky and Tennessee. Tomorrow's weather will be dominated by a high-pressure area. What weather should you expect tomorrow?

1. Low overcast; mild temperatures with light, steady rain or drizzle
2. Light, southerly winds; high humidity and possibly fog
3. Moderate winds from the northwest, clear visibility and cooler temperatures ✓
4. Scattered clouds with light, southeasterly winds; high humidity and possible fog

Under the U.S. Aids to Navigation System on the Western Rivers, which is TRUE of a preferred channel buoy?

1. It shall be solid red
2. It shall be horizontally-banded red and green ✓
3. It shall be vertically-striped red and white
4. It shall be solid green

Which is TRUE concerning privately maintained aids to navigation included in the Light List?

1. They are painted white and must use a white light if lighted
2. They must be conspicuously marked by a signboard with the words "PRIVATE AID"
3. They must conform to the standards of the U.S. Aids to Navigation System ✓
4. Not permitted in or along first-class waterways and may be authorized for second- and third-class waterways

Which defines the controlling depth of the river?

1. The least available water in a channel which limits the draft of boats and tows ✓
2. The edge of a dredged channel
3. The minimum depth of the river prescribed in the channel maintenance program
4. The highest level to which the river may rise without flooding

Which is TRUE concerning the official number of a documented vessel?

1. It is not required to be marked anywhere on the vessel
2. It is required to be permanently marked on the vessel's structure ✓
3. It is required to be painted on the vessel's stern
4. It is required to be painted on the vessel's bow

When piloting a vessel, how are visual references used to establish a constant rate of turn?

1. Visual references cannot be used to maintain a constant rate of turn.
2. Begin the turn when the fixed object is on the beam.
3. Fixed objects that stay on the same relative bearing when the ship is turning indicate a constant rate of turn. ✓
4. Keep the fixed object's relative bearing opening, for a constant rate of turn.

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

1. Reduce speed and make a notation in the bell book ✓
2. Stay on outside of channel and make a notation in the logbook
3. Go half astern when abeam of the moored vessel
4. Check the rudder several times while passing the vessel

You are picking up a conscious person that has fallen overboard in one of the vessels motor boats. Recovery is easier in a light breeze if you approach from which direction?

1. Leeward with the victim to windward
2. Approach with the wind on your starboard side
3. Windward with the victim to leeward ✓
4. Approach with the wind on your port side

Why is it necessary to secure the forced ventilation to a compartment where there is a fire?

1. To prevent additional oxygen from reaching the fire ✓
2. To allow the exhaust fans to remove smoke
3. To extinguish the fire by carbon monoxide smothering
4. To protect firefighting personnel from smoke

In the U.S. Aids to Navigation System on the Western Rivers, the light characteristic of group flashing (2) is used for which purpose?

1. To mark the right descending bank
2. To mark the left descending bank ✓
3. To indicate daymarks with no lateral significant
4. To indicate the preferred channel

When fighting a fire using a portable carbon dioxide extinguisher, where should the stream be directed to extinguish the fire?

1. At the top of the flaming area, moving the horn from side to side,
2. At the base of the flames, moving the horn from side to side ✓
3. At the center of the flaming area, moving the horn vertically from top to bottom
4. At the bottom of the flaming area, moving the horn vertically to the top following the flames upward as they diminish

On the Mississippi and Ohio Rivers, there is a special type of fog known as steam fog. What conditions cause this fog?

1. Warm air passing over much colder water
2. Cold air passing over much warmer water ✓
3. A rapid cooling of the ground on a clear night
4. Rain coming out of a warm air mass aloft

What is considered a Serious Marine Incident?

1. A vessel experiencing bottom suction over a sandbar that does not result in injuries and/or any damage to the vessel
2. An injury to a crewmember, passenger, or other person which requires professional medical treatment beyond first aid ✓
3. An allision that results in $500 damage to a boat dock
4. None of the above

What type of knot in illustration D030DG below is indicated by the Letter "R"?

1. Round turn and two half hitches
2. Fisherman's bend
3. Double becket bend ✓
4. Bowline

Which is the correct way to make an eye in a wire rope with clips?

1. Place the first and third U-bolts on the standing part and the second U-bolt on the bitter end
2. Place the U-bolts of all clips on the bitter end ✓
3. Place the first and third U-bolts on the bitter end and the second U-bolt on the standing part
4. Place the U-bolts of all clips on the standing part

While you are working in a space, the fixed CO2 system is accidentally activated. Which action should you take?

1. Retreat to fresh air and ventilate the compartment before returning ✓
2. Make sure all doors and vents are secured
3. Continue with your work as there is nothing you can do to stop the flow of CO2
4. Secure the applicators to preserve the charge in the cylinders

You are using VHF channel 16 (156.8 MHz) or 2182 kHz. You need help but are not in danger, which signal signifies urgency?

1. "PAN-PAN" ✓
2. "MAYDAY"
3. "ASSISTANCE NEEDED"
4. "SECURITE"

Which is TRUE of the direction of flow (channel) on the Corps of Engineer's Navigation Maps?

1. The direction of flow (channel) is indicated by a broken line ✓
2. The direction of flow (channel) is always midway between the banks
3. The direction of flow (channel) is indicated by depths (in feet)
4. The direction of flow (channel) is not indicated

What does the shoreline on charts generally represent?

1. The mean low-water line
2. The mean tide level
3. The mean low-water spring line
4. The mean high-water line ✓

What color lights do lighted information markers display?

1. White lights ✓
2. Green lights
3. Yellow lights
4. Red lights