National Maritime Center - Serving Our Nation's Mariners U.S.C.G. Merchant Marine Exam - Coast Guard
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National Maritime Center
Serving Our Nation’s Mariners
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Q111 Deck General
(Sample Examination)
7/22/2021 Page 1 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
Choose the best answer to the following Multiple Choice Questions.
1. Which is the normal and safest way for a sailor in a bosun's chair to be raised aloft?
o (A) The sailor should pull himself aloft and then make fast with a bosun's chair hitch
o (B) fairlead the gantline with a snatch block and pulling with a cargo runner
o (C) Take the gantline to a winch drum and heaving away with the winch
• (D) Manually by two or three sailors heaving away on deck
If choice D is selected set score to 1.
2. Nylon line is NOT suitable for which task?
o (A) Mooring lines
o (B) Stoppers
o (C) Towing
• (D) Lashings
If choice D is selected set score to 1.
3. What is the main reason to slush a wire rope?
• (A) Lubricate the inner wires and prevent wear
o (B) Keep the wire soft and manageable
o (C) Prevent rotting
o (D) Prevent kinking
If choice A is selected set score to 1.
4. A nylon line is rated at 12,000 lbs. breaking strain. Using a safety factor of 5, what is the safe
working load (SWL)?
o (A) 2,000 lbs.
• (B) 2,400 lbs.
o (C) 12,000 lbs.
o (D) 60,000 lbs.
If choice B is selected set score to 1.
5. What is the mechanical advantage of tackle number 2 as shown in illustration D029DG below?
o (A) 0.5
o (B) 1.0
• (C) 2.0
o (D) 3.0
If choice C is selected set score to 1.
7/22/2021 Page 2 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
6. When the gyro-pilot is used for steering, what control is adjusted to compensate for varying sea
conditions?
o (A) Lost motion adjustment
o (B) Sea control
• (C) Weather adjustment
o (D) Rudder control
If choice C is selected set score to 1.
7. When being relieved of the helm, the new helmsman would find it handy to know which of the
following?
o (A) Deviation on that heading
o (B) Leeway
o (C) Variation in the area
• (D) Amount of helm carried for a steady course
If choice D is selected set score to 1.
8. How many fathoms are in a shot of anchor cable?
o (A) 6
• (B) 15
o (C) 20
o (D) 30
If choice B is selected set score to 1.
9. Which is the proper term for the wheel on the windlass with indentations for the anchor chain to ride
in?
o (A) A locking ring
o (B) A grabber
• (C) A wildcat
o (D) A cat's pawl
If choice C is selected set score to 1.
10. When anchoring, good practice requires 5 to 7 fathoms of chain for each fathom of depth. Which is
TRUE when anchoring in deep water?
o (A) Use two anchors with the same ratio of chain
o (B) Veer more chain for each fathom of depth
o (C) Use the same ratio
• (D) Use less chain for each fathom of depth
If choice D is selected set score to 1.
7/22/2021 Page 3 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
11. Generally speaking, which is the most favorable bottom for anchoring your vessel?
o (A) Very soft mud
o (B) Rocky with vegetation
• (C) A mixture of mud and clay
o (D) Loose sand bottoms
If choice C is selected set score to 1.
12. Which term defines when a boat turns broadside to heavy seas and winds, thus exposing the boat
to the danger of capsizing?
o (A) Pitchpoled
o (B) Yawed
o (C) Trimmed
• (D) Broached
If choice D is selected set score to 1.
13. If your propeller is racing in rough weather, which action should you take?
o (A) Stop your engine until the rough weather passes
• (B) Decrease your engine speed
o (C) Increase your engine speed
o (D) Ignore it, this is acceptable in rough weather
If choice B is selected set score to 1.
14. Which term defines when a vessel is swinging from side to side off course due to quartering seas?
o (A) Rolling
o (B) Pitchpoling
o (C) Broaching
• (D) Yawing
If choice D is selected set score to 1.
15. You are conducting trials to determine the maneuvering characteristics of your vessel. While making
a turn, you take ranges and bearings of an isolated light. The results are shown in illustration
D034DG below. What is the transfer for a turn of 90°?
o (A) 355 yards
• (B) 400 yards
o (C) 475 yards
o (D) 510 yards
If choice B is selected set score to 1.
7/22/2021 Page 4 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
16. You are on a course of 000°T and put the rudder right 30°. In which direction will the transfer be
measured?
o (A) 000°T
• (B) 090°T
o (C) 180°T
o (D) 270°T
If choice B is selected set score to 1.
17. You are conducting trials to determine the maneuvering characteristics of your vessel. While making
a turn you take the ranges and bearings of an isolated light. The results are shown in illustration
D034DG below. What is the transfer for a turn of 75°?
o (A) 365 yards (06 meters)
• (B) 320 yards (74 meters)
o (C) 230 yards (07 meters)
o (D) 190 yards (71 meters)
If choice B is selected set score to 1.
18. As a ship moves through the water, it causes a wake, which is also moving forward relative to the
sea. In addition to a fore and aft motion, which direction will the wake flow?
o (A) Upward and outward flow
o (B) Downward and outward flow
• (C) Upward and inward flow
o (D) Downward and inward flow
If choice C is selected set score to 1.
19. Before entering an ice area, how should a ship be trimmed?
o (A) Trimmed down by the head
• (B) Trimmed down by the stern
o (C) On an even keel
o (D) Either trimmed by the head or the stern
If choice B is selected set score to 1.
20. Your vessel is being assisted through an ice field in Thunder Bay by the Canadian Coast Guard
icebreaker Alexander Henry. The starboard lookout reports that the icebreaker has run up the code
flag "N" (November). Which action should you take?
o (A) Reverse your engines
o (B) Reduce speed
• (C) Stop your engines
o (D) Stop your vessel instantly
If choice C is selected set score to 1.
7/22/2021 Page 5 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
21. Small floes of rough, hummocky sea ice are capable of damaging a vessel. Which statement is
TRUE?
o (A) The floes are usually seen at night before they are close enough to provide a radar echo
• (B) They can usually be detected by radar in a smooth sea at a range of 2 to 4 miles
o (C) They are indistinguishable from sea return on the PPI
o (D) The floes are invisible to radar when covered with a thick layer of snow
If choice B is selected set score to 1.
22. What is the Reid vapor pressure of allyl chloride?
o (A) 16.5 (psia)
o (B) 14.0 (psia)
o (C) 12.9 (psia)
• (D) 10.3 (psia)
If choice D is selected set score to 1.
23. The flash point of a product is 100°F. What can happen if it is heated above 110°F?
• (A) It may burn and explode if an ignition source is present.
o (B) It will become less volatile and easier to handle.
o (C) It will boil off to the atmosphere.
o (D) None of the above
If choice A is selected set score to 1.
24. What is used when securing light vehicles aboard Ro-Ro vessels?
o (A) Wire
o (B) Manila rope
o (C) Chain
• (D) Buckle or ratchet tensioner
If choice D is selected set score to 1.
25. Which is a solid at ambient temperature?
o (A) Aniline
• (B) Naphthalene
o (C) Formic acid
o (D) Methyl chloride
If choice B is selected set score to 1.
7/22/2021 Page 6 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
26. Where is the heel block located on a boom?
o (A) At the cargo hook
o (B) Near the spider band
• (C) At the base of the boom
o (D) Near the midships guy
If choice C is selected set score to 1.
27. Sweat damage in a hatch full of canned goods in cartons will occur when which condition exists?
o (A) When the air temperature is higher than the temperature of the cargo
o (B) When the dew point is lower than the temperature of the cargo
o (C) When the air temperature is lower than the temperature of the cargo
• (D) When the dew point is higher than the temperature of the cargo
If choice D is selected set score to 1.
28. You are on a tankship carrying benzene in bulk. Which statement is TRUE?
o (A) Benzene is not a cancer-causing agent.
o (B) The crew quarters must have positive-pressure ventilation to prevent the fumes from entering
the living spaces.
o (C) No other cargoes may be carried due to the possibility of contamination by a carcinogen.
• (D) Personnel working in regulated areas must use respirators.
If choice D is selected set score to 1.
29. Which spaces are required to be segregated from cargo tanks carrying grades A, B, C, or D
cargoes?
o (A) Enclosed deck spaces
o (B) Pump rooms
• (C) Navigation spaces
o (D) Cofferdams
If choice C is selected set score to 1.
30. What is the lowest temperature at which a liquid gives off sufficient vapors to form a flammable
mixture with air in the presence of an ignition source?
o (A) Reid vapor index
o (B) Autoignition temperature
• (C) Flash point
o (D) Flammable range
If choice C is selected set score to 1.
7/22/2021 Page 7 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
31. Nonflammable gases should have what kind of label?
o (A) Skull and crossbones
o (B) White
• (C) Green
o (D) Red
If choice C is selected set score to 1.
32. What is the MOST irritating to the skin?
• (A) Oleum
o (B) Ethyl alcohol
o (C) Isoprene
o (D) Carbon disulfide
If choice A is selected set score to 1.
33. U.S. regulations require cargo pump rooms, on tank vessels handling grades A, B, or C liquid cargo,
shall be equipped with power ventilation of the exhaust type. in what amount of time should the
ventilation effect a complete change of air?
o (A) not more than 1 minute
o (B) not more than 2 minutes
• (C) not more than 3 minutes
o (D) not more than 5 minutes
If choice C is selected set score to 1.
34. Where is a permanently installed system of gas detection required?
o (A) Cargo compressor rooms.
o (B) Air locks.
o (C) Cargo pump rooms.
• (D) All of the above.
If choice D is selected set score to 1.
35. Deck foam systems, designed to protect cargo areas on tank vessels built after January 1, 1975,
must have a supply of foam-producing material to operate the system at its designed rate of foam
production for __________.
o (A) 15 minutes without recharging
• (B) 20 minutes without recharging
o (C) 25 minutes without recharging
o (D) 30 minutes without recharging
If choice B is selected set score to 1.
7/22/2021 Page 8 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
36. If you are bunkering and you close off one tank in the line of tanks being filled, what happens to the
rate of flow to other open tanks on the same line?
o (A) The rate of flow remains constant to the open tanks
o (B) The rate of flow decreases to the open tanks
o (C) The rate of flow stops to the open tanks
• (D) The rate of flow increases to the open tanks
If choice D is selected set score to 1.
37. The most likely time for oil pollution while bunkering is when __________.
o (A) first starting to receive fuel
• (B) final topping off is occurring
o (C) hoses are being blown down
o (D) hoses are disconnected and being capped
If choice B is selected set score to 1.
38. Which is a precaution you should take before bunkering?
• (A) Plug the scuppers
o (B) Plug the sounding pipes
o (C) Close the lids on the vents
o (D) Plug the vents
If choice A is selected set score to 1.
39. You are in the process of loading 465,000 barrels of cargo oil. At 1030, on 5 November, you gauge
the vessel and find that you have loaded 203,000 barrels. At 1200 you find that you have loaded
218,000 barrels. If you continue loading at the same rate, you will finish at approximately
__________.
o (A) 1510, 5 November
o (B) 1104, 6 November
• (C) 1242, 6 November
o (D) 0735, 7 November
If choice C is selected set score to 1.
40. Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because
__________.
o (A) the tank valve may be stiff and a spill will occur before the valve can be closed
o (B) air pockets may cause the cargo to bubble out of the ullage hole
• (C) a subsequent temperature rise will cause the cargo to overflow
o (D) the increased viscosity of the product requires higher loading pressure which increases the
chances of a spill
If choice C is selected set score to 1.
7/22/2021 Page 9 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
41. When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed
open?
o (A) Call the owner, operator, or terminal supervisor.
o (B) Run out the vessel's or terminal's fire hose.
o (C) Trip the pump relief valve.
• (D) Order the dock man to shut down.
If choice D is selected set score to 1.
42. A flammable liquid having a Reid vapor pressure of 8½ P.S.I.A. or less and a flash point of 80°F or
below is grade __________.
o (A) A
o (B) B
• (C) C
o (D) D
If choice C is selected set score to 1.
43. Each inert gas system must be designed to supply the cargo tanks with a gas, or mixture of gasses,
that has an oxygen content by volume of __________.
o (A) 10% or less
o (B) 20% or less
• (C) 5% or less
o (D) 15% or less
If choice C is selected set score to 1.
44. Coast Guard Regulations permit which of the following systems to be used for fire prevention and
the simultaneous inerting of cargo tanks on tank vessels?
• (A) An inert gas system
o (B) The fire main system
o (C) The deck foam system
o (D) A fixed water spray system
If choice A is selected set score to 1.
45. The most likely location for a liquid cargo fire to occur on a tanker would be __________.
o (A) in the midships house
o (B) at the main deck manifold
• (C) in the pumproom
o (D) at the vent header
If choice C is selected set score to 1.
7/22/2021 Page 10 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
46. Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping
stopped. Before you resume pumping, you should __________.
• (A) replace the hose
o (B) notify the terminal superintendent
o (C) repair the hose with a patch
o (D) place a large drip pan under the leak and plug the scuppers
If choice A is selected set score to 1.
47. How should cargo tank hatches be protected when the ullage opening is open and the tank NOT
gas free?
• (A) With flame screens
o (B) With pressure-vacuum relief valves
o (C) With warning signs
o (D) With gooseneck vents
If choice A is selected set score to 1.
48. Your tank barge requires repairs that include welding. Who normally would issue a gas-free
certificate?
o (A) The ABS marine surveyor
o (B) Any Coast Guard marine inspector
• (C) A certified marine chemist
o (D) The port engineer
If choice C is selected set score to 1.
49. The only portable electrical equipment permitted in a compartment which is not gas free is a lamp
that is __________.
o (A) battery fed
o (B) approved explosion proof
o (C) self-contained
• (D) All of the above
If choice D is selected set score to 1.
50. Which international body is responsible for drafting the convention prohibiting marine pollution
(MARPOL)?
o (A) The International Association of Shipping
o (B) The Maritime Advisory Council
• (C) The International Maritime Organization
o (D) The Association of Seafaring Nations
If choice C is selected set score to 1.
7/22/2021 Page 11 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
51. Which item indicates the maximum draft to which a vessel can legally be submerged?
o (A) The Muster List ("Station Bill")
• (B) The load line mark
o (C) The tonnage mark
o (D) The Net Tonnage Certificate
If choice B is selected set score to 1.
52. Which agency both assigns load lines, and issues Load Line Certificates?
o (A) The U.S. Customs
• (B) The American Bureau of Shipping
o (C) The U.S. Coast Guard
o (D) The Secretary of Commerce
If choice B is selected set score to 1.
53. Keeping the draft at or below the load line mark will insure that the vessel has which of the
following?
• (A) Reserve buoyancy
o (B) Minimal displacement
o (C) Adequate ballast
o (D) Normal rolling periods
If choice A is selected set score to 1.
54. Which item do you NOT have to provide for the Coast Guard representative at the time of a stability
test?
o (A) Tank sounding tables and draft mark locations.
o (B) General arrangement plans of decks, holds and inner bottoms
• (C) A stability letter.
o (D) Capacity plans showing the vertical and longitudinal centers of gravity of stowage spaces and
tanks.
If choice C is selected set score to 1.
55. Who must approve the vessel's trim and stability booklet?
• (A) United States Coast Guard
o (B) National Cargo Bureau
o (C) Society of Naval Architects and Marine Engineers
o (D) International Maritime Organization
If choice A is selected set score to 1.
7/22/2021 Page 12 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
56. On an inspected vessel, which abbreviation refers to the horizontal distance between
perpendiculars taken at the forward-most and the after-most points on the waterline at her deepest
operating draft?
• (A) LBP
o (B) LLL
o (C) LWL
o (D) LOA
If choice A is selected set score to 1.
57. An inland oil barge must have equipment available to remove an on-deck oil spill. What size spill is
this equipment required to control and remove?
• (A) One barrel
o (B) Two barrels
o (C) Five barrels
o (D) Ten barrels
If choice A is selected set score to 1.
58. In cleaning up an oil spill, which term depicts the main function of straw?
• (A) It acts as a sorbent
o (B) It acts as a blocker
o (C) It acts as a chemical agent
o (D) None of the above
If choice A is selected set score to 1.
59. Providing you are not in a special area, such as the Mediterranean or Red Sea, how many nautical
miles from land must you be to throw wooden dunnage into the sea?
o (A) 3 nm
o (B) 6 nm
o (C) 12 nm
• (D) It is prohibited to discharge dunnage into the sea
If choice D is selected set score to 1.
60. After making the required notification that a large oil spill into the water has occurred, what is the
Next action that should be taken?
o (A) Have the vessel move out of the spill area
o (B) Throw grains of sand into the oil
o (C) Apply straw or sawdust on the oil
• (D) Contain the spread of the oil
If choice D is selected set score to 1.
7/22/2021 Page 13 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
61. Which method requires prior approval to be used when cleaning up an oil spill?
• (A) Chemical agents
o (B) Suction equipment
o (C) Skimmers
o (D) Sorbent booms
If choice A is selected set score to 1.
62. To serve as a person in charge of transfer operations on board a self-propelled tank vessel, an
individual must hold/be which of the following?
o (A) A letter from the company stating his qualification
o (B) Be 30 years old
o (C) A valid officer credential for inspected vessels
• (D) A tankerman-PIC endorsement
If choice D is selected set score to 1.
63. How many months after its expiration date may a Coast Guard credential be renewed without
retaking the complete exam?
o (A) 1 month
o (B) 6 months
• (C) 12 months
o (D) 24 months
If choice C is selected set score to 1.
64. What is the period of validity of a Merchant Mariner Credential?
o (A) 2 years
o (B) 1 year
o (C) 3 years
• (D) 5 years
If choice D is selected set score to 1.
65. Which is the requirement for the name and hailing port of a documented commercial vessel?
o (A) It is required to be marked on both bows and on the keel
o (B) It is not required to be marked anywhere on the vessel
• (C) It is required to be marked on the stern with the name of the vessel marked on both bows
o (D) It is required to be marked on the keel, stern, and both bows
If choice C is selected set score to 1.
7/22/2021 Page 14 of 17
Q111 Deck GeneralQ111 Deck General
U.S.C.G. Merchant Marine Exam
Second/Third Mate of Unlimited Tonnage
Illustrations: 2
66. What is the difference between net tonnage and gross tonnage?
o (A) Net tonnage is tonnage of cargo compared to tonnage of whole ship.
o (B) Net tonnage is gross tonnage minus engine and bunker spaces.
o (C) Net tonnage is the net weight of the ship.
• (D) Net tonnage is the gross tonnage less certain deductible spaces.
If choice D is selected set score to 1.
67. To determine the number of inflatable liferafts required on a vessel, you should check which
document?
o (A) SOLAS Certificate
o (B) Load Line Certificate
• (C) Certificate of Inspection
o (D) Stability Letter
If choice C is selected set score to 1.
68. Which is supplied to the vessel by the U.S. Coast Guard?
o (A) Bell book
• (B) Official Logbook
o (C) Cargo gear register
o (D) Rough Logbook
If choice B is selected set score to 1.
69. When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass
computed, the watch officer should record the results __________.
• (A) in the compass deviation log
o (B) on the compass deviation card
o (C) in the vessel's Official Logbook
o (D) on a Napier diagram
If choice A is selected set score to 1.
70. What is the period of validity of a Safety Management Certificate?
• (A) 60 months
o (B) 48 months
o (C) 42 months
o (D) 36 months
If choice A is selected set score to 1.
7/22/2021 Page 15 of 17
Q111 Deck GeneralNational Maritime Center
Serving Our Nation’s Mariners
D029DG
Adapted for testing purposes only from HAYLER, American Merchant Seaman’s Manual
Copyright © 1980 by Cornell Maritime Press, Inc.
Further reproduction prohibited without permission
Page 16 of 17
7/30/2018 Q111 Deck GeneralNational Maritime Center
Serving Our Nation’s Mariners
D034DG
HEADING BEARING RANGE
REMARKS
(TRUE) (TRUE) (YDS)
228° INITIAL HEADING
228° 232° 2260 ON INITIAL COURSE
RIGHT FULL RUDDER
228° 234° 1700
ORDERED
230° 236° 1490
252° 235° 1275
275° 231° 1000
316° 214° 850
352° 198° 975
022° 194° 1210
053° 197° 1430
087° 202° 1600
115° 209° 1690
151° 217° 1700
183° 225° 1600
218° 232° 1350 RUDDER AMIDSHIPS
228° 235° 1125 STEADY ON 228°
Adapted for testing purposes only
Further reproduction prohibited without permission Page 17 of 17
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