Boat Handling Flashcards
The forward motion of a ship in one revolution of it propeller is measured by?
pitch
As a propeller turns, voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency, pitting the blades and vibration. These voids are known as?
cavitation
Leeway is?
The lateral movement of a vessel downwind of her intended course
The effect of wind on exposed areas of the vessel is most noticeable when?
Backing
The pivot point of a vessel going ahead is?
About one-third of the vessel’s length from the bow
When underway and proceeding ahead, as speed increases, the pivot point tends to?
move forward
When backing down with sternway the pivot point of a vessel is?
About one quarter of the vessel’s length from the stern
Your vessel is dead in the water with the rudder amidships. As the right-handed screw (single screw) starts to turn ahead that bow will tend to?
Go to port
Your vessel is single screw with a right handed prop, there is no current the easiest way to make a landing is to?
Port side
When operating a twin-screw vessel you lose your port engine, you continue to operate on your starboard motor only. You would compensate with what to move your vessel in a straight line?
Right rudder
The distance gained in the direction of the original course when you are making a turn is know as?
Advance
The distance that a vessel travels from the time that the order to put the engines full astern until the vessel is dead in the water is known as?
head reach
An increase in speed results in the stern doing what on a vessel underway in shallow water?
Sucking down lower than the bow
A common occurrence when a vessel is running into shallow water is that “squat” will cause?
a decrease in bottom clearance and an increase in draft
Squatting is a shallow water effect that will increase dramatically if?
You increase your ships speed past its critical speed
You notice that your speed has decreased, the stern of your vessel has settled into the water and your rudder is sluggish in responding, the most likely cause is?
Shallow water
A wedge of water building up between the bow and nearer bank which forces the bow out and away describes?
Bank cushion
A vessel proceeding along the bank of a river or channel has the tendency to?
Sheer away from the bank
The effect known as bank suction?
Pulls the stern towards the bank
Two vessels are abreast of each other and passing port to port in a confined waterway. When your bow approaches the screws of the other vessel you should expect?
Your bow to sheer towards the other vessel
You intend to overtake a vessel in a narrow channel. As you approach the other vessel’s stern the vessels will?
Drift together
The term lee side refers to?
The side of the boat sheltered from the wind
You are docking a vessel, wind and current are more favorable when?
They are parallel to the pier from ahead
You are docking a vessel when possible you should?
go in against the current
