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
What is the normal length of anchor cable used to anchor a vessel?
A. An amount equal to the depth of the water
B. Two times the depth of water
C. Three to four times the depth of water
D. Five to seven times the depth of water
D. Five to seven times the depth of water
A sufficient amount of chain must be veered when anchoring a vessel to ensure …
A. the vessel has enough room to swing while at anchor
B. the anchor flukes bite into the ocean bottom
C. there is a sufficient scope of chain to keep the anchor on the bottom
D. there is more chain out than there is in the chain locker
B. the anchor flukes bite into the ocean bottom
When anchoring in a current, you should …
A. drop the anchor with the bow headed downstream
B. back your vessel into the current
C. anchor while stemming the current
D. All of the above
C. anchor while stemming the current
While anchoring your vessel, the best time to let go the anchor is when the vessel is …
A. dead in the water
B. moving slowly astern over the ground
C. moving fast ahead over the ground
D. moving fast astern over the ground
B. moving slowly astern over the ground
The best method to stop a vessel from dragging anchor in a sand bottom is to …
A. reduce the length of the cable
B. pay out more anchor cable
C. back the engines
D. swing the rudder several times to work the anchor into the bottom
B. pay out more anchor cable
The best method of determining if a vessel is dragging anchor is to note …
A. the amount of line paid out
B. how much the vessel sheers while at anchor
C. any change in the tautness of the anchor chain
D. changes in bearings of fixed objects onshore
D. changes in bearings of fixed objects onshore
You are being towed by one tug. As you lengthen the bridle legs you …
A. increase your chances of breaking the towing hawser
B. reduce the yawing of your vessel
C. reduce the spring effect of the tow connection
D. increase your chances of breaking the bridle legs
B. reduce the yawing of your vessel
The catenary in a towline is …
A. a short bridle
B. the downward curvature of the hawser
C. another name for a pelican hook
D. used to hold it amidships
B. the downward curvature of the hawser
When towing astern, increased catenary will …
A. increase control of the tow
B. prevent the towing vessel from going in irons
C. make the towing vessel less maneuverable
D. reduce shock stress on the towing hawser
D. reduce shock stress on the towing hawser
How many legs does the bridle for an ocean tow have?
A. One
B. Two
C. Three
D. Four
B. Two
Which statement is TRUE concerning hawser towing?
A. The catenary in a hawser should be sufficient so that the hawser just touches the bottom.
B. The hawser is of sufficient length for towing when taut between tug and tow.
C. Increasing speed usually increases the catenary in the hawser.
D. Shortening the tow hawser generally decreases the maneuverability of the tug.
D. Shortening the tow hawser generally decreases the maneuverability of the tug.
What term indicates the outward curvature of the hull above the waterline?
A. sheer
B. tumble home
C. deadrise
D. flare
D. flare
The fittings used to secure a watertight door are known as …
A. clamps
B. clasps
C. dogs
D. latches
C. dogs
Which term refers to a transverse curvature of the deck?
A. Deadrise
B. Camber
C. Freeboard
D. Flare
B. Camber
What term indicates a curvature of the decks in a longitudinal direction?
A. Deadrise
B. Camber
C. Sheer
D. Flare
C. Sheer
In ship construction, frame spacing is …
A. greater at the bow and stern
B. reduced at the bow and stern
C. uniform over the length of the vessel
D. uniform over the length of the vessel, with the exception of the machinery spaces, where it is reduced due to increased stresses
B. reduced at the bow and stern
The upward pressure of displaced water is called …
A. buoyancy
B. deadweight
C. draft
D. freeboard
A. buoyancy
What is NOT a motion of the vessel?
A. Pitch
B. Roll
C. Trim
D. Yaw
C. Trim
The tendency of a vessel to return to its original trim after being inclined by an external force is …
A. equilibrium
B. buoyancy
C. transverse stability
D. longitudinal stability
D. longitudinal stability
What is the principal danger from the liquid in a half full tank onboard a vessel?
A. Corrosion from the shifting liquid
B. Rupturing of bulkheads from the shifting liquid
C. Loss of stability from free surface effect
D. Holing of the tank bottom from the weight of the shifting liquid
C. Loss of stability from free surface effect
A vessel is “listed” when it is …
A. inclined due to an off-center weight
B. inclined due to the wind
C. down by the head
D. down by the stern
A wind has caused a difference between drafts starboard and port. This difference is …
A. list
B. heel
C. trim
D. flotation
B. heel
The principal danger from ice collecting on a vessel is the …
A. decrease in capabilities of radar
B. decrease in displacement
C. adverse effect on trim
D. loss of stability
D. loss of stability
Reserve buoyancy is the …
A. unoccupied space below the waterline
B. volume of intact space above the waterline
C. excess of the buoyant force over the gravity force
D. difference in the buoyant force in salt and fresh waters
B. volume of intact space above the waterline
For an upright vessel, draft is the vertical distance between the keel and the …
A. waterline
B. freeboard deck
C. plimsoll mark
D. amidships section
A. waterline
Stability is determined principally by the location of two points in a vessel: the center of buoyancy and the …
A. meta center
B. geometric center of the water plane area
C. center of gravity
D. center of flotation
C. center of gravity
Which operation should be done when launching an inflatable liferaft by hand?
A. Open the liferaft casing.
B. Turn the valve on the CO2 cylinder to start inflation.
C. Make sure the operating cord is secured to the vessel before throwing it over the side.
D. After inflation, detach operating cord from liferaft.
C
The operating cord on an inflatable life raft also serves as a …
A. lifeline
B. painter
C. drogue
D. marker
B
If an inflatable liferaft is to be released manually, where should the operating cord be attached prior to throwing the raft overboard?
A. Do not attach the cord to anything but throw is overboard with the raft container.
B. Attach the cord to a fixed object on the ship.
C. You should stand on the cord.
D. Attach the cord to the special pad eye on the “raft davit launcher”.
B
Prior to lowering the lifeboat, the most important item to check is the …
A. oars
B. sail
C. boat plug
D. life preservers
C
The most important thing to remember when launching an inflatable life raft by hand is to …
A. open the CO2 inflation valve
B. open the raft container
C. ensure that the operating cord is secured to the vessel
D. inflate the raft on the vessel, then lower it over the side
C
In rough weather, when a ship is able to maneuver, it is best to launch a lifeboat …
A. on the lee side
B. on the windward side
C. with wind dead ahead
D. with the wind from dead astern
A
When a vessel is swinging from side to side off course due to quartering seas, the vessel is …
A. broaching
B. pitchpoling
C. rolling
D. yawing
D
You are underway in heavy weather and your bow is into the seas. To prevent pounding, you should …
A. change course, in order to take seas at an 85 degree angle from the bow.
B. decrease speed
C. increase speed
D. secure all loose gear
B
When a boat turns broadside to heavy seas and winds, thus exposing the boat to the danger of capsizing, the boat has …
A. broached
B. pitchpoled
C. trimmed
D. yawed
A
Your ship is sinking rapidly. A container containing an inflatable liferaft has bobbed to the surface upon functioning of the hydrostatic release. Which action should you take?
A. Cut the painter line so it will not pull the liferaft container down.
B. Swim away from the container so you will not be in danger as it goes down.
C. Take no action because the painter will cause the liferaft to inflate and open the container.
D. Manually open the container and inflate the liferaft with the hand pump.
C
The most effective cooling agent among those normally used to fight fires is …
A. water fog or spray
B. chemical foam
C. mechanical foam
D. carbon dioxide
A
Removing which will extinguish a fire?
A. Nitrogen
B. Carbon dioxide
C. Sodium
D. Oxygen
D
The spread of fire is prevented by …
A. cooling surfaces adjacent to the fire
B. leaving combustibles in the endangered area
C. increasing the oxygen supply
D. All of the above
A
A fire in a pile of linen is a class …
A. A
B. B
C. C
D. D
A
To prevent the spread of fire by conduction you should …
A. shut off all electrical power
B. close all openings to the area
C. remove combustibles from direct exposure
D. cool the bulkheads around the fire
D
The class of fire on which a blanketing effect is essential is class …
A. A
B. B
C. C
D. D
B
A galley grease fire would be classified as which class of fire?
A. A
B. B
C. C
D. D
B
Fires are grouped into what categories?
A. Class A, B, C, and D
B. Type 1, 2, 3, and 4
C. Combustible solids, liquids, and gases
D. Flammable solids, liquids, and gases
A
Fire may be spread by which means?
A. Conduction of heat to adjacent surfaces
B. Direct radiation
C. Convection
D. All of the above
D
All of the following are part of the fire triangle EXCEPT …
A. electricity
B. fuel
C. oxygen
D. heat
A
Convection spreads a fire by …
A. the transfer of heat across an unobstructed space
B. burning liquids flowing into another space
C. transmitting the heat of a fire through the ship’s metal
D. heated gases flowing through ventilation systems
D
The primary function(s) of an automatic sprinkler system is (are) to …
A. extinguish the fire which triggers it
B. limit the spread of fire and control the amount of heat produced
C. protect people in the areas which have sprinkler heads
D. alert the crew to the fire
B
Which statement is TRUE concerning carbon dioxide?
A. It is heavier than air.
B. It is non-conductive.
C. It is used on class B and C fires.
D. All of the above are true.
D