U.S.C.G. Merchant Marine Exam - dco.uscg.mil · The free surface correction depends upon the...

National Maritime Center Providing Credentials to Mariners

U.S.C.G. Merchant Marine Exam

OUPV to Master or Mate Oceans or Near Coastal

Less than 200 GRT

Q158-Navigation and Deck General-Safety

(Sample Examination)

Page 1 of 18Q158-Navigation and Deck General-Safety

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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2

Choose the best answer to the following Multiple Choice Questions.

1. You are using tackle number 6 as shown in illustration D029DG below to lift a weight. The hauling part of this tackle is bent to the weight hook (w) of tackle number 8. Disregarding friction, what is the mechanical advantage of this rig?

o (A) 11 o (B) 16 • (C) 18 o (D) 24

If choice C is selected set score to 1.

2. Free communication effect is in direct proportion to __________.

o (A) length of space only o (B) width of space only • (C) length and width of space o (D) neither length nor width


3. You are planning to anchor in an area where several anchors have been lost due to fouling. What precaution should you take?

o (A) Only anchor using both anchors not set in bottom o (B) Anchor with scope of 8 or more to 1 o (C) Use a stern anchor with a scope of 8 or more to 1 • (D) Fit a crown strap and work wire to the anchor

If choice D is selected set score to 1.

4. On 11 May your vessel's 1839 ZT position is LAT 17°30'N, LONG 63°55'W, when an amplitude of the Sun's center is observed on the celestial horizon bearing 301° per standard magnetic compass. Variation for this area is 10.5°W. The chronometer reads 10h 37m 10s and is 02m 08s slow. What is the deviation of the compass?

o (A) 2.5°W o (B) 2.0°W • (C) 1.5°W o (D) 2.0°E


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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 5. According to regulations, how many B-II hand portable fire extinguishers are required in the cargo

tank area of an unmanned, cargo pump-equipped tank barge engaged in transferring grade B flammable liquids?

o (A) One o (B) Three • (C) Two o (D) None


6. On 23 July your 2100 ZT position is LAT 36°43.0'N, LONG 16°09.8'W, when you observed an azimuth of Polaris to determine the compass error. Polaris bears 359.0° per gyrocompass. At the time of the observation, the helmsman noted that he was heading 319.0° per gyrocompass and 331.0° per standard compass. Variation is 12.0°W. Which of the following statements is TRUE?

o (A) The gyro error is 0.7°E. o (B) The gyro error is 1.7°W. • (C) The deviation is 1.7°E. o (D) The compass error is 13.7°W


7. Which defines the process of "Block stowage"?

o (A) Separation cloths to separate different kinds of cargo o (B) To have the cargo on pallets • (C) Stowing all the cargo for a port in the same area o (D) Using port marks on the cargo


8. You are underway in heavy weather and your bow is into the seas. Which action should you take to prevent pounding?

o (A) Increase the speed of the vessel o (B) Secure all loose gear on your vessel • (C) Decrease the speed of the vessel o (D) Put the seas on a 85 degree angle from the bow



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 9. A vessel has been surveyed in a foreign port and found unseaworthy as a result of neglect. A

seaman on this vessel is entitled to discharge and which of the following?

o (A) One month's pay only o (B) Transportation to the port of engagement o (C) One month's pay or transportation to the nearest U.S. port, whichever is the least amount • (D) One month's pay or transportation to the nearest U.S. port, whichever is the greater amount


10. A spark arrestor __________.

o (A) keeps sparks from falling into an open tank o (B) grounds static electricity • (C) prevents sparks from getting out of an engine's exhaust system o (D) secures covers on ullage openings


11. What are the required number and type of hand portable fire extinguishers for staterooms on cargo vessels?

o (A) One C-I • (B) None required o (C) One B-I o (D) One A-I

If choice B is selected set score to 1.

12. The load chart of a crane enables the operator to combine the load radius with boom length to determine the __________.

• (A) allowable load o (B) minimum horsepower required o (C) hoist rope strength o (D) maximum counter weight required

If choice A is selected set score to 1.

13. On mid-ocean waters, the height of a wind-generated wave is not affected by the __________.

o (A) wind's velocity • (B) water depth exceeding 100 feet o (C) fetch o (D) duration of the wind



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 14. Which item is NOT required to be marked with the vessel's name?

o (A) Life preserver o (B) Lifeboat oar • (C) Hand-portable fire extinguisher o (D) Immersion suit


15. A vessel at LAT 32°14.7'N, LONG 66°28.9'W, heads for a destination at LAT 36°58.7'N, LONG 75°42.2'W. Determine the true course by Mercator sailing.

o (A) 348.3°T o (B) 058.2°T o (C) 235.2°T • (D) 301.8°T


16. Line throwing apparatus aboard ship must contain __________.

o (A) two rockets, one of which shall be the buoyant type o (B) three rockets, one of which shall be the buoyant type • (C) four rockets, two of which shall be the buoyant type o (D) five rockets, two of which shall be the buoyant type


17. The free surface correction depends upon the dimensions of the surface of the free liquid and the __________.

o (A) location of the tank in the vessel o (B) volume of liquid in the tank o (C) height of the center of gravity of the vessel • (D) displacement of the vessel


18. What is the name of a small light tackle with blocks of steel or wood that is used for miscellaneous small jobs?

o (A) Chockablock o (B) Snatch block • (C) Handy-billy o (D) Threefold purchase



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 19. Lifesaving regulations in Subchapter W require that a fire drill include which of the following?

o (A) Starting the fire pumps o (B) Checking arrangements for abandon ship o (C) Checking the operation of watertight doors • (D) All of the above


20. During a SAR helicopter evacuation which of the following describes the proper donning of a rescue sling?

o (A) The person sits in the sling with their hands clasped across the chest while facing the winch hook

• (B) The loop of the sling passes behind the back and under the arms while facing the winch hook o (C) The person steps onto the sling grasping the hoist line for support while facing away from the

winch hook o (D) The loop of the sling passes across the chest and under the arms while facing away from the

winch hook


21. The brickwork surrounding the firebox of a boiler is known as __________.

o (A) fire plate • (B) refractory o (C) the screen wall o (D) the waterwall


22. Your vessel has grounded on a bar. What should you do?

o (A) If you cannot get clear immediately, lighten the ship by pumping all ballast overboard. • (B) Switch to the high suction for condenser circulating water, if it is submerged. o (C) Run the engine full astern to keep from being set further onto the bar. o (D) All of the above


23. Which term describes damage to cargo caused by fumes or vapors from liquids, gases, or solids?

o (A) Vaporization o (B) Oxidation o (C) Contamination • (D) Tainting



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 24. Which agency assigns Load lines for U.S. vessels?

o (A) The National Cargo Bureau o (B) The U.S. Coast Guard • (C) The American Bureau of Shipping o (D) The Lloyd's Register of Shipping


25. A vessel's "quarter" is that section which is __________.

o (A) abeam o (B) dead astern • (C) on either side of the stern o (D) just aft of the bow


26. Which ocean current is "warm" based on the latitude in which it originates and on the effect it has on climate?

• (A) Kuroshio Current o (B) Benguela Current o (C) Peru Current o (D) California Current


27. An upright vessel has negative GM. GM becomes positive at the angle of loll because the __________.

o (A) underwater volume of the hull is increased o (B) free surface effects are reduced due to pocketing • (C) effective beam is increased causing BM to increase o (D) KG is reduced as the vessel seeks the angle of loll


28. What is meant by the term "two-blocked"?

• (A) The bottom block touches the top block. o (B) You have two blocks. o (C) The line has jumped the sheaves. o (D) There are turns in the fall.



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 29. The signal man assisting the crane operator has his arm extended with the palm down and holds

this position rigidly. This is the signal to __________.

o (A) swing • (B) stop o (C) hoist o (D) lower


30. Where is a permanently installed system of gas detection required?

o (A) Cargo pump rooms. o (B) Cargo compressor rooms. o (C) Air locks. • (D) All of the above.


31. The speed of an ocean current is dependent on __________.

• (A) the density of the water o (B) underwater soil conditions o (C) the air temperature o (D) the presence of a high pressure area near it


32. During fueling, all doors, hatches, and ports __________.

o (A) should be opened o (B) to windward should be opened and the ones to leeward should be closed • (C) should be closed o (D) to leeward should be opened and the ones to windward should be closed


33. After an explosion, repair of emergency machinery and services should be accomplished __________.

o (A) after stability is restored o (B) immediately, before the emergency is under control • (C) after control of fire, flooding, and structural repairs o (D) after control of fire, but before control of flooding



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 34. Deficient oxygen content inside a chain locker can be detected with which item?

o (A) Litmus paper o (B) A combustible gas indicator o (C) An oxygen breathing apparatus • (D) An oxygen indicator


35. Quadrantal error in a gyrocompass has its GREATEST effect on which of the following?

o (A) near the equator o (B) in high latitudes o (C) on north or south headings • (D) on intercardinal headings


36. Which international body is responsible for drafting the convention prohibiting marine pollution (MARPOL)?

o (A) The Maritime Advisory Council o (B) The International Association of Shipping o (C) The Association of Seafaring Nations • (D) The International Maritime Organization


37. When personnel are lifted by a helicopter from an inflatable liferaft, what should the personnel on the raft do?

o (A) Inflate the floor of the raft to provide for additional stability o (B) Take in the sea anchor to prevent fouling of the rescue sling • (C) Deflate the floor of the raft to reduce the danger of capsizing o (D) Remove their lifejackets to prepare for the transfer


38. Shell plating is __________.

o (A) synonymous with decking o (B) a hatch cover • (C) the outer plating of a vessel o (D) the galvanizing on steel



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 39. Which document is NOT required by law to be posted aboard a vessel?

o (A) Certificate of Inspection o (B) Muster List o (C) Officer's licenses • (D) Official Crew List


40. Which of the following describes excessive recirculation of inert gas?

o (A) it is likely to overheat the deck water seal • (B) it is undesirable and it may lead to high oxygen content of the inert gas o (C) it is highly recommended o (D) it is likely to over pressurize the cargo tanks


41. Which item do you NOT have to provide for the Coast Guard representative at the time of a stability test?

o (A) General arrangement plans of decks; holds and inner bottoms. o (B) Capacity plans showing the vertical and longitudinal centers of gravity of stowage spaces and

tanks. • (C) A stability letter. o (D) Tank sounding tables and draft mark locations.


42. How many fire axes should be carried by a 700 GT cargo vessel, navigating the Great Lakes?

o (A) 4 • (B) 6 o (C) 2 o (D) 8


43. You are the credentialed Master of a 199 GT uninspected towing vessel making a 500 mile coastwise trip. You carry a deck crew of six (6). Which statement is TRUE?

o (A) Only the able seamen require Merchant Mariner Credentials. o (B) There must be 3 separate watches stood. o (C) There must be at least 5 able seamen among the deck crew. • (D) None of the above



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 44. You must shore up the collision bulkhead due to solid flooding forward. The bulkhead approximates

an inverted triangle. The center of pressure of the shores on the bulkhead should be located _________.

• (A) approximately halfway up the bulkhead o (B) at the bottom of the bulkhead o (C) evenly over the surface of the bulkhead o (D) approximately two-thirds of the way up the bulkhead


45. Which is the BEST method of determining if a vessel is dragging anchor?

o (A) Observe how much the vessel sheers while at anchor o (B) Note any change in the tautness of the anchor chain • (C) Observe changes in bearings of fixed objects onshore o (D) Observe the amount of line paid out


46. A tug should not come alongside a tank vessel in way of its cargo tanks while it is loading grade A, B, or C cargo without the permission of the __________.

o (A) the cognizant OCMI o (B) superintendent of the shoreside facility o (C) local fire department • (D) person in charge of the transfer


47. Your vessel is broken down and rolling in heavy seas. How can you reduce the danger of capsizing?

• (A) Rigging a sea anchor o (B) Constantly shifting the rudder o (C) Move all passengers to the stern o (D) Move all passengers to one side of the boat


48. Which of the following defines "Rolling Period"?

o (A) the time it takes the vessel to make a complete roll such as from port to starboard and return to level

• (B) the time it takes the vessel to make a complete roll such as from port to starboard and back to port

o (C) the time it takes the vessel to make a complete roll such as from port and return to level o (D) the time it takes the vessel to make a complete roll such as from level to starboard and return

to port



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 49. By regulation, orange smoke distress signals will expire not more than how many months from the

date of manufacture?

o (A) 24 months o (B) 36 months • (C) 42 months o (D) 54 months


50. The center of gravity of a freely swinging load suspended from a pedestal crane acts as if it were located at the __________.

• (A) counterweight o (B) longitudinal centerline o (C) point of suspension o (D) pedestal


51. A man who is conscious has fallen overboard is being picked up by a lifeboat. In a mild breeze how should the the boat should approach the person in the water?

o (A) With the wind ahead and the victim just off the bow • (B) With the wind just off the bow and the victim to leeward o (C) With the wind just off the bow and the victim to windward o (D) With the wind astern and the victim just off the bow


52. Why should foam be banked off a bulkhead when extinguishing an oil fire?

• (A) To prevent agitation of the oil and spreading the fire o (B) To prevent any oil on the bulkheads from igniting o (C) To coat the surrounding bulkheads with foam in case the fire spreads o (D) To cool the bulkhead closest to the fire


53. When anchoring in a clay bottom, what is one hazard that may cause the anchor to drag?

o (A) The flukes may not dig in. • (B) The anchor may get shod with clay and not develop full holding power. o (C) The flukes may dig in unevenly and capsize the anchor when under stress. o (D) The anchor will tend to dig in and come to rest near the vertical.



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 54. What is NOT a function of the steam drum of a marine water-tube boiler?

o (A) Receives saturated steam from the generating tubes o (B) Serves as a reservoir of boiler feed water • (C) Collects steam exhausted from the turbines o (D) Holds internal fittings for separation of moisture from steam


55. What is the maximum length of time that distress flares are approved for?

o (A) 1 and 1/2 years o (B) 2 years • (C) 3 and 1/2 years o (D) 5 years


56. What is one of the principal dangers inherent in liquefied petroleum gas?

o (A) the way it reacts with sea water • (B) its low temperature causes frostbite or freezing o (C) the strong odor it produces o (D) as it warms up it becomes heavier than air


57. Which statement about gyrocompass error is TRUE?

o (A) Any error will remain constant unless the compass is stopped and restarted. o (B) Any error shown by a gyro repeater will be the same as the error of the master compass. o (C) The sign (E or W) of the error will change with different headings of the ship. • (D) The amount of the error and the sign will generally be the same on all headings.


58. The difference between the height of the metacenter and the metacentric height is known as __________.

• (A) height of the center of gravity o (B) metacentric radius o (C) height of the center of buoyancy o (D) righting arm



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 59. Which wire rope purchase(s) is/are optional with a 30-Ton pedestal crane?

• (A) Rider block o (B) Luff o (C) Hoist o (D) All of the above


60. How can the Coast Guard determine that a crew member is "able to understand any order spoken by the officers"?

• (A) Require a demonstration by the officer and the crew member o (B) Require that an interpreter be provided o (C) Require a written test o (D) All of the above


61. When a small craft's anchor fouls in a rocky bottom, how should the first attempt to clear it be made?

o (A) Making the line fast to the bitt and bringing the vessel further forward o (B) Hauling vertically on the line o (C) Increasing the scope and running slowly in a wide circle with the anchor line taut • (D) Reversing the angle and direction of pull, with moderate scope


62. What is the purpose of the freeing ports on a vessel with solid bulwarks?

o (A) Permit easy jettisoning of deck cargo in an emergency o (B) Lighten the above deck weight caused by a solid bulwark o (C) Prevent the formation of any unusual stress concentration points • (D) Allow water which may be shipped on deck to flow off rapidly


63. Many vessels are provided with flume tanks, which also have a dump tank located under the flume tanks. In the event the ship is damaged, you could dump the flume tanks into the dump tank which would __________.

o (A) reduce the free surface effect and raise the KG o (B) not have any effect on free surface and lower the KG o (C) not have any effect on free surface and raise the KG • (D) reduce the free surface effect and lower the KG



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 64. Your load line certificate expires on 27 May 1988. The vessel is surveyed on that date and is found

satisfactory. You are sailing foreign the same day. Which statement is TRUE?

• (A) The existing certificate is extended for a period of up to 150 days. o (B) The existing certificate is extended until the first foreign port of call where a new certificate will

be issued by the local surveyor. o (C) The existing certificate is endorsed as valid for a five year period commencing 27 May 1988. o (D) A new certificate must be issued before you sail.


65. While assigned to a 150 GRT vessel, you are required to sign "foreign" articles on a voyage from New Orleans to which port?

o (A) Houston, Texas o (B) Veracruz, Mexico • (C) Cristobal Colon, Panama o (D) Kingston, Jamaica


66. According to the Lifesaving regulations in Subchapter W, fire and abandon ship drills must be held within 24 hours of leaving port if the percentage of the crew that has not participated in drills aboard that particular vessel in the prior month exceeds which percentage?

o (A) 5% o (B) 10% • (C) 25% o (D) 40%


67. Each fireman's outfit and its spare equipment on a tankship must be stowed in a(n) __________.

o (A) unlocked cabinet in the machinery space • (B) separate and accessible location o (C) location near a fire hydrant o (D) locked cabinet in the machinery space


68. In illustration D033DG below, what is a wooden deck installed on top of the plating lettered N known as?

• (A) ceiling o (B) furring o (C) spar decking o (D) flooring



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Q158-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam OUPV to Master or Mate Oceans or Near Coastal Less than 200 GRT Illustrations: 2 69. Butadiene, inhibited, is labeled as a __________.

• (A) flammable gas o (B) flammable solid o (C) flammable liquid o (D) combustible liquid


70. The rise and fall of the ocean's surface due to a distant storm is known as __________.

• (A) swell o (B) sea o (C) waves o (D) fetch



8/24/2017


5/23/2016

D029DG

Adapted for testing purposes only

Further reproduction prohibited without permission



5/23/2016

D033DG

Adapted for testing purposes only

Further reproduction prohibited without permission


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