CAPTAIN'S LICENSE BOAT HANDLING AND CHARACTERISTICS Flashcards
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
