HOME
ABOUT US
MISSION AND VISION
SERVICES
FAQ’s and Forum
Basic English Proficiency Tips
Review On-Board
NEWS & UPDATES
CONTACT US
LOGIN
Review Now
Warning
: mysql_connect(): Access denied for user 'lorque_wrdp1'@'localhost' (using password: YES) in
/home/tmc2018/lorquelorqueassociates.com/wp-content/plugins/review_on_board/inc/class_lib.php
on line
15
PREVIOUS
NEXT
1. What is NOT a motion of the vessel?
Trim
Roll
2. The time required to incline from port to starboard and back to port again is called __________.
rolling period
range of stability
3. Addition of weight to a vessel will ALWAYS __________.
reduce reserve buoyancy
increase GM
4. If your vessel is aground at the bow, it would be preferable that any weight removals be made from the __________.
bow
stern
5. Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel's stability?
Shift any off-center weights from port to starboard
Press up any slack double-bottom tanks to eliminate free surface
6. The stability which remains after a compartment is flooded is called __________.
damage stability
initial stability
7. You are fighting a fire in a watertight compartment using hoses and salt water. Stability may be reduced because of __________.
increase in free surface which reduces the metacentric height
reduction of KG to the minimum allowable
8. Jettisoning weight from topside __________.
lowers the center of gravity
raises the center of buoyancy
9. Reserve buoyancy is the __________.
unoccupied space below the waterline
volume of intact space above the waterline
10. Where are the draft marks required to be displayed on a ship?
Area of water line near stem and stern
Deep tanks
11. What is the center around which a vessel trims called?
the tipping center
the center of gravity
12. Freeboard is measured from the upper edge of the __________.
gunwale bar
deck line
13. In small-angle stability, when external forces exist, the buoyant force is assumed to act vertically upwards through the center of buoyancy and through the __________.
metacentric height
metacenter
14. A vessel behaves as if all of its weight is acting downward through the center of gravity, and all its support is acting upward through the __________.
center of buoyancy
keel
15. Stability is determined principally by the location of the center of gravity and the __________.
center of buoyancy
center of flotation
16. Stability is determined principally by the location of the point of application of two forces: the upward-acting buoyant force and the __________.
downward-acting weight force
environmental force
17. The geometric center of the underwater volume of a floating vessel is the center of __________.
buoyancy
hydrodynamic forces
18. The center of flotation of a vessel is __________.
the center of gravity of the water plane
the center of volume of the immersed portion of the vesse
19. In the presence of external forces, the center of buoyancy of an inclined vessel is vertically aligned with the __________.
metacenter
center of flotation
20. The center of flotation of a vessel is the geometric center of the __________.
above water volume
waterplane area
21. When cargo is shifted from the lower hold to the main deck the __________.
center of gravity will move upwards
GM will increase
22. Which action will best increase the transverse stability of a merchant vessel at sea?
Ballasting the double bottom tanks
Deballasting the deep tanks
23. GM cannot be used as an indicator of stability at all angles of inclination because __________.
M is not fixed at large angles
G is not fixed at large angles
24. Initial stability is indicated by __________.
GM
KM
25. A slow and easy motion of a vessel in a seaway is an indication of a __________.
small GM
stiff vessel
26. Vessels "A" and "B" are identical; however, "A" is more tender than "B". This means that "A" relative to "B" has a __________.
smaller GM
lower KG
27. A partially full tank causes a virtual rise in the height of the __________.
center of gravity
metacenter
28. The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the __________.
sum of the longitudinal free surface moments of the vessel
sum of the vertical moments of the vessel
29. Which will improve stability?
Loading cargo on deck
Pumping the bilges
30. Topside icing decreases vessel stability because it increases __________.
KG
draft
31. At an angle of loll, the righting moment is __________.
negative
zero
32. The value of the righting arm at an angle of loll is __________.
negative
equal to GM
33. A vessel is "listed" when it is __________
inclined due to an off-center weight
down by the head
34. In the absence of external forces, adding weight on one side of a floating vessel causes the vessel to __________.
list until the center of buoyancy is aligned vertically with the center of gravity
heel until the angle of loll is reached
35. When a vessel is inclined by an external force, the __________
vessel's center of buoyancy shifts to the center of the vessel's underwater hull
vessel's center of gravity shifts to the center of the vessel's underwater hull
36. The difference between the starboard and port drafts caused by shifting a weight transversely is __________.
list
heel
37. Assuming an even transverse distribution of weight in a vessel, which condition could cause a list?
Empty double-bottoms and lower holds, and a heavy deck cargo
Having KG smaller than KM
38. If your vessel will list with equal readiness to either side, the list is most likely caused by __________.
excessive freeboard
negative GM
39. A vessel has a strong wind on the port beam. This has the same effect on stability as __________.
weight that is off-center to starboard
increasing the trim
40. When a vessel is inclined at a small angle the center of buoyancy will __________.
move toward the low side
move toward the high side
41. Your vessel rolls slowly and sluggishly. This indicates that the vessel __________.
has poor stability
has a greater draft forward than aft
42. When the height of the metacenter is greater than the height of the center of gravity a vessel has which type of stability?
Stable
Negative
43. In small angle stability theory, the metacenter is located at the intersection of the inclined vertical centerline and a vertical line through __________.
G
B
44. Which formula can be used to calculate metacentric height?
KM - KG
KM - GM
45. When initial stability applies, the height of the center of gravity plus the metacentric height equals the __________.
corrected height of the center of gravity
height of the metacenter
46. A vessel with a large GM will __________.
be subject to severe racking stresses
be less likely to have cargo shift
47. With no environmental forces acting on the vessel, the center of gravity of an inclined vessel is vertically aligned with the __________.
metacenter
longitudinal centerline
48. When a vessel has positive stability, the distance between the line of force through B and the line of force through G is called the __________.
righting arm
righting moment
49. The ship's tanks most effective for trimming are the __________.
peaks
settlers
50. When a vessel's LCG is aft of her LCB, the vessel will __________
trim by the stern
be on an even keel
51. Longitudinal moment is obtained by multiplying a vessel's weight and its __________.
LCG
VCG or KG
52. A ship's forward draft is 22'-04" and its after draft is 23'-00". The draft amidships is 23'-04". This indicates a concentration of weight __________.
amidships
at the ends
53. A vessel's bottom will be subjected to tension when weight is concentrated __________.
amidships
forward
54. When a vessel is stationary and in a hogging condition, the main deck is under __________.
tension stress
shear stress
55. Your vessel has a midships engine room and the cargo is concentrated in the end holds. The vessel is __________.
hogging with tensile stress on main deck
hogging with compressive stress on main deck
56. What is not usually a concern when loading a single-hulled tanker?
Initial stability
Trim
57. Your vessel is floating in water of density 1.010. The fresh water allowance is 8 inches. How far below her marks may she be loaded so as to float at her mark in saltwater of density 1.025?
8.0 inches
4.8 inches
58. A bulk freighter 680 ft. in length, 60 ft. beam, with a waterplane coefficient of .84, is floating in salt water at a draft of 21'. How many long tons would it take to increase the mean draft by 1"?
81.6 tons
64.3 tons
59. A tanker's mean draft is 32'-05". At this draft, the TPI is 178. The mean draft after loading 1200 tons will be __________.
33'-00"
33'-04"
60. Your vessel is on an even keel. The MT1 of your vessel is 1000 ft-tons. How many tons of cargo must be loaded in number 4 hold which is 100 feet abaft the tipping center, if she is to have a 2 foot drag?
240 tons
100 tons
61. Your vessel's existing draft is FWD 17'-04", AFT 18'-08". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 765 long tons are discharged from No. 7 hatch.
FWD 15'-11 3/5", AFT 18'-11"
FWD 15'-04 3/4", AFT 18'-04"
62. Your vessel's existing draft is FWD 19'-02", AFT 20'-10". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 170 long tons are discharged from No. 8 hatch.
FWD 18'-10.8", AFT 20'-10.4"
FWD 19'-00.4", AFT 20'-08.6"
63. Using the Guidance Manual for Loading M.V. Grand Haven, determine the amount of ballast required in tank No.1 (P&S) to maintain drafts of 17'-00" forward and 22'-06" aft for a vessel loaded with grain which has a test weight of 39.5 lbs.
155 tons each
170 tons each
64. Assuming that the recommended hatch loading sequence is followed, how many long tons of iron ore may be loaded through hatch No. 20 while using a single belt loader to arrive at a desired mean keel draft of 29'-06"? (Use the Guidance Manual for Loading M.V. GRAND HAVEN.)
1550 tons
2920 tons
65. Your vessel's existing draft is FWD 24'-08", AFT 25'-04". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 180 long tons are loaded in No. 23 hatch.
FWD 24'-06 1/2", AFT 25'-08 2/3"
FWD 24'-04 2/3", AFT 25'-10 3/4"
66. Assuming that the recommended hatch loading sequence is followed, how many long tons of iron ore may be loaded through hatches 2, 6, & 10, while using a single belt loader, to arrive at a desired mean keel draft of 27'-07"? (use the Guidance Manual for Loading M.V. GRAND HAVEN)
510 tons per hatch
530 tons per hatch
67. What should you be concerned with when loading and securing vehicles on a Ro-Ro?
Number, position and angle of lashes
Disconnecting the battery cables to prevent fire hazard
68. What is NOT required as special safety equipment on a tankship carrying hazardous cargoes in bulk?
Two portable vapor detectors suitable for the cargoes carried
Shower and eyewash fountain
69. What is NOT considered "jewelry"?
Buttons
Steamboat ratchets
70. What product is considered a noxious liquid substance for regulatory purposes?
Cetyl-Eicosyl methacrylate
Octanol
71. In towing, heaving lines are used for __________.
passing a messenger line
passing a tow bridle to the tug
72. One advantage of chain over wire rope for a tow bridle is that chain __________.
resists damage from chafing
equalizes towing forces bette
73. To reconnect a broken tow line, it is better to use a polypropylene messenger line because it __________
floats
is very supple
74. According to the regulations, what fire safety control feature is required in quick-closing shut off valves?
A water spray actuator
A fusible link
75. For the purposes of cargo oil containment, the fixed container under the manifold of an eight-inch loading line must hold a minimum of __________.
three barrels
four barrels
76. Your vessel is carrying 24,000 barrels of oil for discharge. The cargo hoses have an inside diameter of eight inches. The container around the loading manifold must hold __________.
three barrels
four barrels
77. In comparison to electric power, hydraulic power for jacking systems has the advantage of __________.
better control capabilities
less preload needed
78. Prior to backloading portable tanks or drums onto an offshore supply vessel, check that each tank is __________.
capped and checked for leaks
coated with non-corrosive protection
79. When a wind force causes a floating MODU to heel to a static angle, the __________.
righting moment equals the wind-heeling moment
centers of buoyancy and gravity are in the same vertical line
80. The natural rolling period of a drilling barge increases when __________.
ice accumulates above deck
free surfaces are reduced
81. A situation has occurred in which your vessel must be towed. When the towing vessel passes the towing line to you, you should secure the line __________.
to the forward-most bitts
to the base of the foremast
82. You are hoisting a heavy lift with the jumbo boom. Your vessel displaces 8560 T. The 45-ton weight is on the pier and its center is 65' to starboard of the centerline. The head of the boom is 95' above the base line and the center of gravity of the lift when stowed on deck will be 55' above the base line. As the jumbo boom takes the strain the ship lists to 5.5°. What is the GM with the cargo stowed?
3.96 ft.
3.74 ft.
83. You are making a heavy lift with the jumbo boom. Your vessel displaces 8390 T. The 40 ton weight is on the pier and its center is 55' to starboard of the centerline. The head of the boom is 110' above the base line and the center of gravity of the lift when stowed on deck will be 45' above the base line. As the jumbo boom takes the strain the ship lists to 3.5°. What is the GM with the cargo stowed?
4.58 feet
4.27 feet
84. To check stability, a weight of 35 tons is lifted with the jumbo boom, whose head is 35 feet from the ship's centerline. The clinometer shows a list of 7.0° with the weight suspended. Displacement including the weight is 14,000 tons. What would the length of GM in this condition?
0.71 foot
0.95 foot
85. To check stability, a weight of 10 tons is lifted with the jumbo boom whose head is 45 ft. from the ship's centerline. The clinometer show's a list of 5.0° with weight suspended. Displacement including the weight is 9,000 tons. What would be the GM in this condition?
0.57 foot
0.72 foot
86. The period of roll is the time difference between __________.
full inclination on one side to the next full inclination on the same side
full inclination on one side to full inclination on the other side
87. Your vessel has a metacentric height of 1.12 feet and a beam of 60 feet. What will your average rolling period be?
25 seconds
35 seconds
88. Your vessel measures 114 feet long by 16 feet in beam. If the natural rolling period at a draft of 5'-06" is 6 seconds, what is the GM?
1.53 feet
1.38 feet
89. Your vessel measures 131 feet long by 20 feet in beam. If the natural rolling period at a draft of 8'-03" is 6 seconds, what is the GM?
2.15 feet
1.93 feet
90. You have approximately 6 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical distance of 7 feet? (total displacement is 422 tons)
0.1 foot
0.9 foot
91. You have approximately 15 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical distance of 8 feet? (total displacement is 300 tons)
0.4 foot
0.1 foot
92. Your vessel displaces 560 tons. The existing deck cargo has a center of gravity of 4.5 feet above the deck and weighs 34 tons. If you load 10 tons of ground tackle with an estimated center of gravity of 2.8 feet above the deck, what is the final height of the CG of the deck cargo?
4.36 feet
4.11 feet
93. A cargo of 30 tons is to be loaded on deck 30 feet from the ship's centerline. The ship's displacement including the 30 tons cargo will be 9,000 tons and the GM will be 5 feet. What would be the list of the vessel after loading this cargo?
1.14°
2.05°
94. What will happen when cargo is shifted from the main deck into the lower hold of a vessel?
The GM will increase.
The center of buoyancy will move upward.
95. The horizontal fore-and-aft movement of a vessel is called __________.
surge
heave
96. The horizontal port or starboard movement of a vessel is called __________.
sway
yaw
97. The angular movement of a vessel about a horizontal line drawn from its bow to its stern is __________.
rolling
heaving
98. The vertical motion of a floating vessel is known as __________.
heave
sway
99. Rolling is angular motion of the vessel about what axis?
Longitudinal
Vertical
100. Pitching is angular motion of the vessel about what axis?
Transverse
Vertical
click here to take the assessment test