Upgrade Test Flashcards
What is the mechanical advantage of tackle number 2?

A. 1:1
B. 2:1
C. 3:1
D. 4:1
B. 2:1
What is the name of tackle number 7?
A. Runner
B. Inverted Whip
C. Whip
D. Single Purchase

A. Runner
What is the name of tackle number 1?
A. Single Whip
B. One-fold purchase
C. Gun Tackle
D. Runner

A. Single whip
What is the name of tackle number 2?
A. Single Whip
B. One fold purchase
C. Single purchase
D. Gun tackle

D. Gun Tackle
You are using tackle number 1 in illustration D029DG to lift a weight of 100 lbs. If you include 10 percent of the weight for each sheave for friction, what is the pull on the hauling part required to lift the weight?
A. 50 lbs.
B. 55 lbs.
C. 100 lbs.
D. 110 lbs.

D. 110 lbs.
River currents tend to …
A. pick up speed where the channel widens
B. run slower in the center of the channel
C. hug the inside of a bend
D. cause the greatest depth of water to be along the outside of a bend
D. cause the greatest depth of water to be along the outside of a bend
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. reduce your speed
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. bank cushion
A V-shaped ripple with the point of the V pointing upstream in a river may indicate a …
A. submerged rock, not dangerous to navigation
B. sunken wreck, not dangerous to navigation
C. towed-under buoy
D. All of the above
C. towed-under buoy
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. It forces the bow away from the bank.
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 draft will significantly decrease.
C. Your bow will sheer towards the other vessel.
D. Your bow will sheer away from the other vessel.
C. Your bow will sheer towards the other vessel.
A vessel proceeding along the bank of a river or channel has the tendency to …
A. continue in line with the bank
B. hug the bank
C. sheer away from the bank
D. increase speed
C. sheer away from the bank
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. toward the outside of the bend
A condition where two currents meet at the downstream end of a middle bar can be determined by a …
A. small whirlpool
B. smooth patch of water
C. V-shaped ripple with the point of the V pointing downstream
D. V-shaped ripple with the point of the V pointing upstream
C. V-shaped ripple with the point of the V pointing downstream
A snag or other underwater obstruction may form a …
A. V-shaped ripple with the point of the V pointing upstream
B. V-shaped ripple with the point of the V pointing downstream
C. small patch of smooth water on a windy day
D. smoothing out of the vessel’s wake
A. V-shaped ripple with the point of the V pointing upstream
An inflatable life raft should be lifted back aboard the ship by using …
A. the single hook at the top of the raft
B. two lines passed under the raft
C. the towing bridle
D. All of the above
C. the towing bridle
What is the best procedure for picking up a lifeboat at sea while utilizing the lifeboat’s painter?
A. Place the lifeboat ahead and to windward of your vessel with the wind broad on the bow of your ship
B. Place the lifeboat ahead and to leeward of your vessel with the wind broad on the bow of your ship
C. Place the ship ahead and to windward of your lifeboat with the on the quarter to allow your ship to drift down to the lifeboat.
D. Place the lifeboat ahead and to windward of your ship with the on the quarter to allow your ship to drift down to the lifeboat.
B. Place the lifeboat ahead and to leeward of your vessel with the wind broad on the bow of your ship
In order to retrieve an inflatable life raft and place it on deck, you should heave on the …
A. lifelines
B. righting strap
C. sea anchor
D. towing bridle
D. towing bridle
When operating gravity davits, the …
A. gripes should be released after the boat is moving
B. davits should always be hand cranked the last 12 inches into the final stowage position
C. boats are generally lowered by surging the falls around cruciform bitts
D. tricing pendant should be tripped prior to releasing the gripes
B. davits should always be hand cranked the last 12 inches into the final stowage position
When a rescue vessel approaches a survival craft in heavy seas, the person in charge of the survival craft should …
A. tie up to the rescue vessel
B. transfer only those personnel who are not seasick
C. wait for calmer weather before transferring personnel
D. transfer all personnel immediately
C. wait for calmer weather before transferring personnel
To safely anchor a vessel there must be sufficient “scope” in the anchor cable. Scope is the ratio of …
A. weight of cable to weight of vessel
B. weight of cable to weight of anchor
C. length of anchor to depth of water
D. length of cable to depth of water
D. length of cable to depth of water
Conventional anchors are least likely to hold in a bottom consisting of …
A. soft clay
B. hard mud
C. very soft mud
D. sand
C. very soft mud
Which type of bottom is best suited for holding an anchor of a small boat?
A. Mud and clay
B. Rocky
C. Sandy
D. Gravel
A. Mud and clay
By paying out more anchor cable, you …
A. decrease the holding power of your anchor
B. decrease the swing of your vessel while at anchor
C. increase the holding power of your anchor
D. increase the possibility that your vessel will drag anchor
C. increase the holding power of your anchor