CAPTAIN'S LICENSE BOAT HANDLING AND CHARACTERISTICS Flashcards Preview

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Flashcards in CAPTAIN'S LICENSE BOAT HANDLING AND CHARACTERISTICS Deck (44)
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1

The pivoting point of a vessel going ahead is

A) at the hawsepipe
B) about one-third of the vessel's length from the bow
C) about two-third's of the vessel's length from the bow
D) near the stern

B

2

When underway and proceeding ahead, as the speed increases, the pivot point tends to

A) move aft
B) move forward
C) move lower
D) remain stationary

B

3

The distance gained in the direction of the original course when you are making a turn is known as

A) advance
B) drift
C) tactical diameter
D) transfer

A

4

In relation to the turning circle of a ship, the term "advance" means the distance

A) gained at right angles to the original course
B) gained in the direction of the original course
C) moved sidewise from the original course when the rudder is first put over
D) around the circumference of the turning circle

B

5

Generally, you can best keep a vessel under steering control when the vessel has

A) headway
B) sternway
C) no way on, with engines stopped
D) no way on, with engines full ahead

A

6

The forward movement of a vessel in one revolution of its propeller is measured by

A) advance
B) head reach
C) the pitch
D) transfer

C

7

As the propeller turns, voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency, pitting of the blades, and vibration. These voids are known as

A) advance
B) cavitation
C) edging
D) slip

B

8

The effect of wind on exposed areas of the vessel is most noticeable when

A) backing
B) going slow ahead
C) going full ahead
D) turning

A

9

A wedge of water building up between the bow and nearer bank, which forces the bow out and away, describes

A) bank cushion
B) bank suction
C) combined effect
D) bend effect

A

10

The effect known as "bank cushion" acts in which of the following ways on a single screw vessel proceeding along a narrow channel?

A) it forces the bow away from the bank
B) it forces the stern away from the bank
C) it forces the entire vessel away from the bank
D) it heels the vessel toward the bank

A

11

How does the effect known as "bank suction" act on a single screw vessel proceeding along a narrow channel?

A) it pulls the bow toward the bank
B) it pulls the stern toward the bank
C) it pushes the entire vessel away from thew bank
D) it heels the vessel toward the bank

B

12

Two vessels are abreast of each other and passing port to port in a confined waterway. What should you expect as your bow approaches the screws of the other vessel?

A) your speed will significantly increase
B) your speed will significantly decrease
C) your bow will sheer toward the other vessel
D) your bow will sheer away from the other vessel

C

13

Which effect does speed through water have on a vessel, which is underway in shallow water?

A) a decrease in the speed results in a decrease in steering response and maneuverability
B) an increase in speed results in the stern sucking down lower than the bow
C) an increase in speed results in the vessel rising on an even plane
D) a decrease in speed results in the vessel sucking down on an even plane

B

14

In order to reduce your wake in a narrow channel you should

A) apply enough rudder to counter the effect of the current
B) change your course to a zigzag course
C) reduce your speed
D) shift the weight to the stern

C

15

For the deepest water when rounding a bend in a river, you should navigate your vessel

A) toward the inside of the bend
B) toward the outside of the bend
C) toward the center of the river just before the bend, then change course for the river's center after the bend
D) in the river's center

B

16

Your vessel is docking, but not yet alongside. Which line will be the most useful when maneuvering the vessel alongside the pier?

A) bow breast line
B) after bow spring line
C) inshore head line
D) offshore head line

B

17

A vessel is equipped with a single right-handed screw. With the rudder amidships and calm wind, the vessel will most likely back

A) straight astern
B) to port
C) to starboard
D) in no particular direction

B

18

Which effect does speed through the water have on a vessel, which is underway in shallow water?

A) A decrease in the speed results in a decrease in steering response and maneuverability
B) An increase in speed results in the stern sucking down lower than the bow
C) An increase in speed results in the vessel rising on an even plane
D) A decrease in speed results in the vessel sucking down on an even plane

B

19

Which shallow water effect will increase dramatically if you increase your ship's speed?

A) Squatting
B) Smelling the bottom
C) Sinkage
D) Bank cushion

A

20

The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?


A) It forces the bow away from the bank
B) It forces the stern away from the bank
C) It forces the entire vessel away from the bank
D) It heels the vessel toward the bank

A

21

Your vessel is broken down and rolling in heavy seas. You can reduce the danger of capsizing by…

A) Constantly shifting the rudder
B) Moving all passengers to one side of the boat
C) Rigging a sea anchor
D) Moving the passengers to the stern

C

22

A vessel is equipped with twin propellers, both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships, what will happen?

A) The bow will swing to starboard
B) The bow will swing to port
C) The vessel will steer a zig zag course
D) The vessel will steer a fairly straight course

D

23

When underway and proceeding ahead, as the speed increases, the pivot point tends to…

A) Move aft
B) Move forward
C) Move lower
D) Remain stationary

B

24

How does the effect known as "bank suction" act on a single-screw vessel proceeding along a narrow channel?

A) It pulls the bow toward the bank
B) It pulls the stern toward the bank
C) It pushes the entire vessel away from the bank
D) It heels the vessel toward the bank

B

25

A racetrack turn would be better than a Williamson turn in recovering a man overboard if…

A) The man has been missing for a period of time
B) The sea water is very cold and the man is visible
C) There is thick fog
D) The wind was from astern on the original course

B

26

Your vessel is dead in the water with the rudder amidships. As the right-handed screw starts to turn ahead, the bow will tend to go…

A) To starboard
B) To port
C) Straight ahead
D) As influenced by the tide and sea

B

27

You are operating a twin-screw vessel and lose your port engine. You continue to operate on your starboard engine only. Which action would you take to move your vessel ahead in a straight line?

A) Compensate with right rudder
B) Compensate with left rudder
C) Surge the starboard engine
D) Rudder amidships - no compensation is necessary on a twin-screw vessel

A

28

In a Williamson turn the rudder is put over full until the…

A) Vessel has turned 90° From her original course
B) Vessel has turned 60° From her original course
C) Vessel is on a reciprocal course
D) Emergency turn signal sounds

B

29

While underway in thick fog you are on watch and hear the cry "man overboard". Which type of maneuver should you make?

A) Figure eight turn
B) Round turn
C) Racetrack turn
D) Williamson turn

D

30

When hugging the bank in a narrow channel, you should take precausions against…

A) Bank suction and squat
B) The effects of vessels passing close aboard
C) Striking underwater obstructions close to the bank
D) All of the above

D