Exam 3 Flashcards
(138 cards)
1
Q
When anchored, increasing the scope of the anchor chain normally serves to __________.
A. prevent fouling of the anchor
B. reduce strain on the windlass
C. decrease swing of the vessel
D. prevent dragging of the anchor
A
D. prevent dragging of the anchor
2
Q
On an anchor windlass, the wheel over which the anchor chain passes is called a ___________.
A. brake compressor wheel
B. devil’s claw
C. Winchhead
D. wildcat
A
D. wildcat
3
Q
What is meant by veering the anchor chain?
A. Bringing the anchor to short stay
B. Heaving in all the chain
C. Locking the windlass to prevent more chain from running out
D. Paying out more chain
A
D. Paying out more chain
4
Q
The wheel on the windlass with indentations for the anchor chain is the __________.
A. grabber
B. wildcat
C. locking ring
D. pawl
A
B. wildcat
5
Q
The machinery associated with heaving in and running out anchor chain is the __________.
A. windlass
B. draw works
C. dynamic pay out system
D. winch
A
A. windlass
6
Q
When dropping anchor, you are stationed at the windlass brake. The most important piece(s) of gear is (are):
A. goggles
B. a hard hat
C. gloves
D. a long sleeve shirt
A
A. goggles
7
Q
The sprocket wheel in a windlass, used for heaving in the anchor is called a ______.
A. wildcat
B. dog wheel
C. fairlead
D. capstan
A
A. wildcat
8
Q
The opening in the deck beneath the anchor windlass that leads to the chain locker is the ________.
A. hawsepipe
B. drop-pipe
C. fallpipe
D. spill pipe
A
D. spill pipe
9
Q
When attempting to free an anchor jammed in the hawsepipe, the simplest method of freeing it may be:
A. starting the disengaged windlass at high speed
B. rigging a bull rope to pull it out
C. to grease the hawsepipe
D. to pry it loose with a short piece of pipe
A
A. starting the disengaged windlass at high speed
10
Q
A Kort nozzle is a(n) __________.
A. hollow tube surrounding the propeller used to improve thrust
B. nozzle attached to a firefighting hose
C. intake valve on a diesel engine
D. piston cylinder on a diesel engine
A
A. hollow tube surrounding the propeller used to improve thrust
11
Q
Kort nozzles are installed around the propellers of some vessels to _________.
A. increase the thrust of the propeller
B. protect the propeller from striking sawyers
C. prevent the propeller from striking barges towed on the hip
D. prevent the propeller from touching bottom in low water
A
A. increase the thrust of the propeller
12
Q
Sidewise force of the propeller tends to throw a vessel’s stern to the right or left, depending on rotation. This is due to:
A. back current from the rudder
B. greater pressure on the right or left side of the propeller, depending on rotation
C. lower pressure on the right or left side of the propeller, depending on rotation
D. torque from the velocity and angle at which the surrounding water impinges upon the propeller blades
A
D. torque from the velocity and angle at which the surrounding water impinges upon the propeller blades
13
Q
What would you use to adjust the height of a cargo boom?
A. Lizard
B. Spanner guy
C. Topping lift
D. Working guy
A
C. Topping lift
14
Q
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom?
A. Cargo whip
B. Gooseneck fitting
C. Spider band
D. Topping lift
A
D. Topping lift
15
Q
The fitting that allows a boom to move freely both vertically and laterally is called the ________.
A. swivel
B. lizard
C. spider band
D. gooseneck
A
D. gooseneck
16
Q
The main advantage and chief characteristic of a Steulchen boom is that it can be _________.
A. operated by one winchman
B. cradled on deck
C. swung from one hatch to the adjacent hatch
D. collared to the mast
A
C. swung from one hatch to the adjacent hatch
17
Q
What is meant by “spotting the boom”?
A. Lowering it into a cradle
B. Placing it in a desired position
C. Spotting it with wash primer and red lead
D. Two-blocking it
A
B. Placing it in a desired position
18
Q
The heel block is located __________.
A. at the base of the boom
B. at the cargo hook
C. near the midships guy
D. near the spider band
A
A. at the base of the boom
19
Q
What is required to be stenciled at the heel of a cargo boom?
A. Maximum angle of elevation permitted
B. Date of the last quadrennial test
C. Safe working load
D. Maximum load when doubled up
A
C. Safe working load
20
Q
The process of lowering a boom to a horizontal position and onto its deck support is called _________.
A. spotting a boom
B. collaring a boom
C. cradling a boom
D. toppling a boom
A
C. cradling a boom
21
Q
Who certifies the safe working load of cargo booms on a vessel?
A. USCG
B. American Bureau of Shipping
C. Society of Naval Architects and marine Engineers
D. The Ship’s Master
A
B. American Bureau of Shipping
22
Q
The boom indicator tells the operator at what angle the boom is compared to the __________.
A. horizontal position of the boom
B. vertical position of the boom
C. horizontal position of the load being lifted
D. vertical position of the load being lifted
A
A. horizontal position of the boom
23
Q
When should a crane boom-up so high that the boom hits the stops?
A. Only if the load has not exceeded the limit at that angle
B. Only if the load contains non-hazardous materials
C. Only if necessary to perform a given lift
D. Never
A
D. Never
24
Q
When a cargo boom or crane is rated at varying capacities, there will be a table at the controls which relates safe working load to __________?
A. winch speed
B. boom strength
C. load radius
D. cable strength
A
C. load radius
25
Stress on the topping lift of a swinging boom can be reduced by _______.
A. rigging a back stay
B. raising the boom
C. increasing the mechanical advantage of the cargo purchase
D. taking all slack out of the preventer
B. raising the boom
26
With a given load on the cargo hook, tension on a single span topping lift __________.
A. increases as the boom's angle to the horizontal increases
B. is at a maximum when the boom is at a 45 deg. angle to the horizontal
C. increases as the boom's angle to the horizontal decreases
D. decreases as the boom's angle to the horizontal decreases
C. increases as the boom's angle to the horizontal decreases
27
With a given load on the cargo hook, the thrust on a cargo boom _________.
A. increases as the angle to the horizontal increases
B. increases as the angle to the horizontal decreases
C. is greatest at an angle of 45 deg. and decreases as the boom is raised or lowered
D. is least at an angle of 45 deg and increases as the boom is raised or lowered
A. increases as the angle to the horizontal increases
28
Which of the following is NOT a loading or transfer feature aboard a Ro-Ro vessel?
A. Stern ramp and/or side ramp
B. Cargo lift
C. Hatch opening designed as a lift
D. Stuelcken boom
D. Stuelcken boom
29
What is another name for the boom of a crane?
A. Lift
B. Rider
C. Jib
D. All of the above
C. Jib
30
Which of the following is/are the optional component(s) of a twin crane set as shown?
A. Boom assembly
B. Hook block assembly
C. Rider block tagline system
D. All of the above
C. Rider block tagline system
31
What is meant by the term "level-luffing" a crane?
A. Luffing while the load remains at a constant height
B. Slewing the boom left or right in a level plane
C. Maintaining the boom at a constant height
D. None of the above
A. Luffing while the load remains at a constant height
32
The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the __________.
A. deck
B. head of the boom
C. heel of the boom
D. mast or king post
C. heel of the boom
33
On your vessel, a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom, what safety factor should you use?
A. Three
B. Five
C. Six
D. Seven
B. Five
34
What does "level-luffing" accomplish during crane operations?
A. It maintains the height of the load above the deck.
B. It prevents the load from swinging when the boom level is adjusted.
C. Less power is needed when topping the boom with a load on the hook.
D. All of the above
D. All of the above
35
Which of the following statement(s) is/are TRUE regarding twin pedestal cranes?
A. A slew drive system provides for rotation of each crane.
B. Each single boom is part of the partial-level luffing type and is capable of limited rotation
C. An independent slew drive system rotates the turntable
D. All of the above
D. All of the above
36
Which action(s) is/are included in crane operations?
A. Normal boom stowage and shutdown operations
B. Emergency shutdown operation
C. Removing booms from stowage
D. All of the above
D. All of the above
37
The boom stops on a pedestal crane prevent the boom from _________.
A. swinging at sea
B. being lowered too low
C. being raised too high
D. overloading when not in use
C. being raised too high
38
The load chart of a crane enables the operator to combine the load radius with boom length to determine the _________.
A. maximum counter weight required
B. minimum horsepower required
C. allowable load
D. hoist rope strength
C. allowable load
39
The best way to determine if a load is within maximum lift limits is to use __________.
A. prior experience with similar lifts
B. a load weight indicator
C. material invoices for shipping weights
D. a boom angle indicator
B. a load weight indicator
40
You are lifting a one-ton weight with a swinging boom. When comparing the stresses on the rig with the boom at 20 deg. to the horizontal to the stresses when the boom is at 60 deg. to the horizontal, which statement is true?
A. The stress on the heel block is less at 60 degs.
B. The change in angle of elevation has no effect on the stresses in the head block.
C. The stress on the topping lift is greater at 60 degs.
D. The thrust on the boom is greater at 20 degs.
A. The stress on the heel block is less at 60 degs.
41
Which statement is TRUE concerning the gooseneck?
A. It connects the boom to the mast and allows the boom to swing freely.
B. It is a sailing maneuver which brings the vessel's head through the wind.
C. It is a sailing condition where there is a loss of air flow over the sails.
D. None of the above
A. It connects the boom to the mast and allows the boom to swing freely.
42
You are using an automatic tension winch by yourself. If you get caught in the the turns of the line as they lead into the gypsyhead _________.
A. the safety cutout will stop the winch before you're injured
B. the line will part and snap back
C. you may be pulled into the winch and injured or killed
D. None of the above are correct
C. you may be pulled into the winch and injured or killed
43
Which device is designed to automatically hold the load if power should fail to an electric winch?
A. Pneumatic brake
B. Electromagnetic brake
C. Hand brake
D. Motor controller
B. Electromagnetic brake
44
If a hydraulic pump on a winch accidentally stops while hoisting, the load will stay suspended because ________.
A. check valve will close and prevent reverse circulation
B. a centrifugal counterweight counteracts the force of gravity
C. the electric pump motor will cut out
D. the control lever will move to the stop position
A. check valve will close and prevent reverse circulation
45
Why is 6x19 class wire rope more commonly used for cargo runners than the more flexible 6x37 wire rope?
A. It resists abrasion better.
B. It is longer.
C. It hugs the winch drum better.
D. it is less expensive.
A. It resists abrasion better.
46
Which statement is TRUE regarding the operation of a crane?
A. The crane jib is raised and lowered by the luffing winch.
B. The crane jib is raised and lowered by the hoisting winch
C. The cargo block is raised and lowered by the luffing winch.
D. The crane jib is raised and lowered by a jibing winch.
A. The crane jib is raised and lowered by the luffing winch.
47
Which statement is FALSE regarding the operation of a crane?
A. The crane jib is raised and lowered by the luffing winch.
B. The cargo block is raised and lowered by the hoisting winch.
C. The cargo block is raised and lowered by the luffing winch.
D. None of the above
C. The cargo block is raised and lowered by the luffing winch.
48
What is the disadvantage of using self-tension winches in automatic mode when the vessel is moored?
A. they require more power than the generators can produce
B. they may not always hold the vessel in position at the berth
C. the constant paying out and taking up will prematurely wear the wire
D. the winches will overheat if left running unattended
B. they may not always hold the vessel in position at the berth
49
Which of the following reduces the holding capacity of a mooring winch brake?
A. the mooring drum intake rate adjustment
B. the number of layers of wire on the drum
C. the setting of the windlass/winch control switch
D. the setting of the manual intake valve
B. the number of layers of wire on the drum
50
The holding capacity of a mooring winch can be reduced by moisture on the break lines. What procedure can be used to remove moisture?
A. winches have automatic heaters to remove moisture
B. run the winch with the brake applied lightly
C. add oil to the drum to displace the moisture
D. replace the break linings since water cannot be removed
B. run the winch with the brake applied lightly
51
When using or caring for natural-fiber rope, which of the following is NOT recommended?
A. reverse turns on winches periodically to keep out kinks
B. use chafing gear
C. dry the line before stowing it
D. try to lubricate the line
D. try to lubricate the line
52
If two mooring lines are to be placed on the same bollard, which method is BEST?
A. Place the eye from the forward line on the bollard and then place the eye from the second line directly over
B. It makes no difference how the lines are placed
C. Place both eyes on the bollard, in any manner, but lead both lines to the same winch head on the vessel
D. Place the eye from either line on the bollard, and then bring the eye of the other line up through the eye of
??? D?????
D. Place the eye from either line on the bollard, and then bring the eye of the other line up through the eye of
53
A mooring winch is designed to have a specific number of layers of wire on the drum for optimum brake capacity. How many layers are recommended?
A. one layer on the drum
B. two layers on the drum
C. three layers on the drum
D. four layers on the drum
A. one layer on the drum
54
An anchor winch should be equipped with mechanical brakes capable of holding _______.
A. the full breaking strength of the mooring line
B. 50% over the working tension of the mooring line
C. half the breaking strength of the mooring line
D. the maximum expected tension of the mooring line
A. the full breaking strength of the mooring line
55
A wildcat is a __________.
A. line that has jumped off the gypsyhead while under strain
B. nylon line that parts under strain and whips back in a hazardous manner
C. winch that is running out of control due to a failure of the overspeed trips
D. deeply-grooved drum on the windlass with sprockets which engage in the links of the anchor chain
D. deeply-grooved drum on the windlass with sprockets which engage in the links of the anchor chain
56
If the winch should fail while you are hauling in the anchor, what prevents the anchor cable from running out?
A. Chain stopper
B. Hawse ratchet
C. Riding pawl
D. Devil's claw
C. Riding pawl
57
The riding pawl is _________.
A. a stopper that prevents the anchor cable from running free if the cable jumps the wildcat
B. the device that locks the deck lashings of the Peck and Hale system
C. the lug that rides on the eccentric rib and engages the locking ring on the windlass
D. a safety interlock in a cargo winch that prevents the runner from overspeeding
A. a stopper that prevents the anchor cable from running free if the cable jumps the wildcat
58
What is an advantage of a steam turbine over a diesel for the main propulsion?
A. Faster response from ahead to astern
B. Less fuel consumption
C. Cheaper initial installation cost
D. Less weight per unit of horsepower
D. Less weight per unit of horsepower
59
What is an advantage of diesel over steam turbine propulsion?
A. Less fuel consumption per SHP
B. Diesel fuel costs less than bunker C or its equivalent
C. Less routine maintenance required
D. Less weight per SHP
A. Less fuel consumption per SHP
60
When two generators are operating in parallel, what will happen if one engine driving a generator shuts down?
A. Both generators will immediately shut down.
B. The stalled generator's circuit breaker will trip on reverse power.
C. The generator that's still running will motorize.
D. The running generator's circuit breaker will immediately trip on overload.
B. The stalled generator's circuit breaker will trip on reverse power.
61
A thrust block is designed to ___________.
A. absorb the shock of wave pressure at the bow
B. be placed between the engines and the foundation to absorb the vibration
C. transmit the thrust of the engine to the propeller
D. transmit the thrust of the propeller to the vessel
D. transmit the thrust of the propeller to the vessel
62
Which characteristic is a disadvantage of a controllable-pitch propeller as compared to a fixed-pitch propeller?
A. Slightly higher fuel consumption
B. Lack of directional control when backing
C. Inefficient at high shaft RPM
D. Some unusual handling characteristics
D. Some unusual handling characteristics
63
To warp a vessel means to __________.
A. anchor the vessel
B. bring the head into the wind
C. clean the decks
D. move the vessel by hauling on lines
D. move the vessel by hauling on lines
64
"Avast" means ________.
A. let go
B. pull
C. slack off
D. stop
D. stop
65
A "stopper" is __________.
A. a short length of line used for temporarily holding another line
B. a snatch block for handling a topping lift
C. an engine order telegraph
D. the brake on a cargo winch
A. a short length of line used for temporarily holding another line
66
To "ease" a line means to __________.
A. cast off
B. double up so that one line does not take all the strain
C. pay out line to remove most of the tension
D. slack it off quickly
C. pay out line to remove most of the tension
67
Faking a line means to ___________.
A. arrange it on deck in long bights
B. coil it down on deck
C. put a whipping on it
D. stow it below
A. arrange it on deck in long bights
68
Laying out a line in successive circles flat on deck with the bitter end in the center is known as _________.
A. coiling
B. faking
C. flemishing
D. lining
C. flemishing
69
To "belay" a line means to __________.
A. coil it down
B. heave it taut
C. stow it below
D. secure it to a cleat
D. secure it to a cleat
70
Mooring lines should be turned end-for-end occasionally. This is because ___________.
A. a line is weakened by constantly pulling on it in one direction
B. normal wear on the line is thus distributed to different areas
C. it prevents the line from kinking on unlaying
D. it prevents permanent misalignment of the line's internal strands
B. normal wear on the line is thus distributed to different areas
71
What type of stopper would you use on a nylon mooring line?
A. Chain
B. Nylon
C. Manila
D. Wire
B. Nylon
72
Which is NOT a recommended practice when handling nylon line?
A. Nylon lines which become slippery because of oil and grease should be scrubbed down.
B. Manila line stoppers should be used for holding nylon hawsers.
C. When easing out nylon line, keep an extra turn on the bitt to prevent slipping.
D. Iced-over nylon lines should be thawed and drained before stowing
B. Manila line stoppers should be used for holding nylon hawsers.
73
Which type of stopper should be used to stop off wire rope?
A. Chain
B. Manila
C. Polypropylene
D. Wire
A. Chain
74
A monkey fist is found on a ___________.
A. heaving line
B. lead line
C. manrope
D. mooring line
A. heaving line
75
A mooring line leading at nearly right angles to the keel is a ____________.
A. bow line
B. breast line
C. spring line
D. stern line
B. breast line
76
A mooring line leading 45 degs to the keel, used to check forward or astern movement of a vessel, is called a ____________.
A. spring line
B. warp line
C. bow line
D. breast line
A. spring line
77
Which mooring line is likely to undergo the most strain when docking a ship under normal conditions?
A. Bow line
B. Breast line
C. Spring line
D. Stern line
C. Spring line
78
A wooden float placed between a ship and a dock to prevent damage to both is called a ___________.
A. camel
B. dolphin
C. rat guard
D. wedge
A. camel
79
A metal object on the pier resembling a tree stump and made to receive mooring lines is a __________.
A. bight
B. bollard
C. chock
D. camel
B. bollard
80
The revolving drum of a winch used to haul lines is called a ___________.
A. bull gear
B. gypsyhead
C. spanner
D. wildcat
B. gypsyhead
81
The purpose of a devil's claw is to ___________.
A. act as a chain stopper
B. prevent the chain from fouling on deck
C. prevent the windlass from engaging
D. control the wildcat
A. act as a chain stopper
82
The bow thruster generally is ineffective at _________.
A. over 1 knot sternway
B. at any speed ahead
C. over 3 knots headway
D. at any speed astern
C. over 3 knots headway
83
What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?
A. The lines may jam and then jump off the gypsyhead.
B. If there is sudden strain on the line, the man tending the line may be pulled into the gypsyhead.
C. The lines' surging may cause the vessel to surge.
D. The heat generated may cause the lines to temporarily fuse to the gypsyhead
D. The heat generated may cause the lines to temporarily fuse to the gypsyhead
84
When a line is subject to wear where it passes through a mooring chock, it should be ____________.
A. wormed, parceled, and served
B. wrapped with heavy tape
C. wrapped with chafing gear
D. wrapped in leather
C. wrapped with chafing gear
85
Which method should be used to secure a manila line to bitts?
A. A round turn on the bitt farthest from the strain and then figure eights
B. A. round turn on the bitt closest to the strain and then figure eights
C. Figure eights and then a round turn on the top of both bitts
D. Only figure eights are necessary on both bitts
B. A. round turn on the bitt closest to the strain and then figure eights
86
A Chinese stopper (two lines) will hold best when you __________.
A. fasten the bitter ends to the mooring line with half hitches
B. twist the ends together and hold them in the direction of the pull
C. twist the ends together and hold them at right angles to the mooring line
D. twist the ends together and hold them in the direction opposite to the pull
B. twist the ends together and hold them in the direction of the pull
87
The main advantage of a Chinese stopper over the one line stopper is that it ___________.
A. will not jam on the mooring line
B. is stronger
C. is easier to use when under heavy tension
D. is safer to use when under heavy tension
A. will not jam on the mooring line
88
A band or collar on the top end of a boom to which the topping lift, midships guy, and outboard guys are secured, is called the _________.
A. collar band
B. guy band
C. pad eye collar
D. spider band
D. spider band
89
Which part of a cargo boom has the greatest diameter?
A. Head
B. Middle
C. Heel
D. It has the same diameter along its complete length
B. Middle
90
When handling cargo, the majority of cargo gear breakdowns is due to __________.
A. compression bending of the boom
B. extension failure of the boom
C. guy failures
D. topping lift failures
C. guy failures
91
If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power, which will occur?
A. The load will fall rapidly to the deck unless the foot brake is engaged.
B. An electromagnetic brake will hold the load where it is suspended.
C. A pawl, forced by a spring mechanism, will engage the teeth of the bull gear and hold the load.
D. The load will slowly lower to the deck under control of the drag of the winch motor.
B. An electromagnetic brake will hold the load where it is suspended.
92
Electric cargo winches have an overload safety device which normally cuts the current to the winch motor __________.
A. when the line pull reaches the breaking strength of the fall
B. before the safe working load of the fall is reached
C. before the line pull reaches the rated capacity of the winch
D. after torque causes line pull to exceed the rated capacity of the winch
D. after torque causes line pull to exceed the rated capacity of the winch
93
Electric generators can be protected against overload _________.
A. by using heavy wire
B. with fuses or circuit breakers
C. with a governor on the engine
D. with switches
B. with fuses or circuit breakers
94
What power source actuates a solenoid valve?
A. Air pressure
B. Hydraulic pressure
C. Electric current
D. Mechanical force
C. Electric current
95
The purpose of fuses in electric wiring is to __________.
A. permit the use of smaller wiring for lighting circuits
B. reduce voltage to the branch circuits
C. prevent overloading the circuits
D. allow for cutting out branch circuits
C. prevent overloading the circuits
96
The boom indicator on a crane will indicate the __________.
A. length of the boom
B. angle of the boom
C. lifting capacity of the boom
D. direction of the boom
B. angle of the boom
97
For any given pedestal crane, when the boom is lengthened, the lifting capacity is __________.
A. unchanged
B. increased
C. eliminated
D. decreased
D. decreased
98
The force acting on a single cargo runner which is vertically lifting or lowering a load is greatest when _________.
A. decelerating when lowering the load
B. decelerating when raising the load
C. lowering the load at constant speed
D. raising the load at constant speed
A. decelerating when lowering the load
99
What is normally used to pass a mooring line to a dock?
A. Distance line
B. Gantline
C. Heaving line
D. Tag line
A. Distance line
100
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. Cavitation
B. Slip
C. Edging
D. Advance
A. Cavitation
101
Defn: To secure a line to a cleat
Belay
102
Defn: A vertical post used in making lines fast onboard a ship
Bitt
103
Defn: A vertical post used in making lines fast on a dock
Bollard
104
Defn: A revolving drum with vertical axis, used for heaving lines
Capstan
105
Defn: A heavy fitting through which mooring lines may be passed.
Chock
106
Defn: A fitting having two arms or horns around which lines can be made fast
Cleat
107
Defn: Placing the eye from the first of two lines on the bollard, and then bringing the eye of the second of the two lines up through the eye of the first, and placing it on the bollard
Dipping the eye
108
Defn: A ring, hook or other device used to keep a line or chain running in the correct direction
Fairlead
109
Defn: To arrange a mooring line on deck in long bights
Fake
110
Defn: Laying out a line in successive concentric circles flat on deck with the bitter end in the center
Flemish
111
Defn: Large rope used for mooring or towing a vessel
Hawser
112
Defn: Length of line used to temporarily take the strain of a mooring line while turns are taken
Rope
113
Defn: To move a vessel along a dock by hauling on a line or heaving anchor
Warp
114
Defn: A wooden float placed between a ship and a dock to prevent damage to both
Camel
115
Formula: Safe Working Load (SWL)
= Breaking Strain / Safety Factor
116
Where on a crane would one find the SWL marked on a crane?
The heel of the boom
117
How often is cargo gear surveyed?
Every 5 yrs
118
A re-certification of the cargo gear aboard a ship occurs _________.
Every year
119
Lifting the boom or jib of a crane is known as ________.
Luffing
120
To turn or swivel a crane in a circular motion is referred to as what?
Slewing
121
To pick up cargo with a crane is known as _________.
Lifting
122
Three (3) basic Pedestal Crane movements are:
1. Lifting
2. Slewing
3. Luffing
123
Defn: To lift the boom (jib) of a crane without an appreciable rise or fall of the cargo hook.
Level luffing
124
What mechanical components are used to slew a pedestal crane? (2)
1. Ring gear
| 2. Slewing motors
125
What are the (4) steps of 1 cycle of a diesel engine or gas turbine?
1. Intake
2. Compression
3. Ignition/Combustion/Expansion
4. Exhaust
126
List (4) Marine fuels used from least refined to most refined:
1. Heavy Fuel Oil (HFO)
2. Marine Diesel Oil (MDO)
3. Natural Gas
4. Gasoline
127
What is the cleanest burning fuel used in the maritime industry?
Natural Gas
128
What is the most prevalent type of fuel used in the maritime industry?
Marine Diesel Oil
129
How many engine-starts worth of compressed air must be maintained on a vessel?
enough for 12 starts of the engine
130
A device used to step-up or step-down voltage to that different from the voltage of the main source is called a __________.
Transformer
131
Defn: The distance a propeller would advance in one complete revolution in a solid medium (or still water).
Pitch
132
The "pitch" of a propeller is measured in what units?
Feet
133
Stabilizers used aboard ships are said to reduce the rolling moment on a ship by ______ to ______ percent.
80 - 90%
134
Defn: The formation of vapor bubbles in water on the low pressure side of a moving propeller.
Cavitation
135
Defn: A term for a propeller's tendency to cause the ship to rotate about its vertical axis due to torque effect. Can occur for both left-/right-handed propellers
Wheel Effect / Walking Effect
136
What is the purpose of an Inverter?
Change power from DC to AC
137
What does UPS stand for in relation to electrical supply?
Uninterrupted Power Supply
138
What are (3) basic components of a UPS?
1. Battery
2. Battery charger
3. Inverter
