U.S.C.G. Merchant Marine Exam - dco.uscg.mil · • (D) reduce the free surface effect and lower the KG ... is 359°T, what is the gyro compass error? • (A) 2°W o (B) 2°E o (C)

National Maritime Center Providing Credentials to Mariners

U.S.C.G. Merchant Marine Exam

Master Less than 100 GRT to Master or Mate

Less than 200 GRT Great Lakes and Inland

Q345-Navigation and Deck General-Safety

(Sample Examination)

Page 1 of 15Q345-Navigation and Deck General-Safety

8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3

Choose the best answer to the following Multiple Choice Questions.

1. 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

If choice C is selected set score to 1.

2. 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

If choice D is selected set score to 1.

3. Aboard a survival craft, ether can be used to __________.

o (A) prime the air supply • (B) start the engine in cold weather o (C) prime the sprinkler system o (D) aid in helping personnel breathe

If choice B is selected set score to 1.

4. How should you signal the crane operator to stop in an emergency?

o (A) Extend arm with the palm down and hold this position rigidly. o (B) Place clasped hands in front of your body. o (C) Place both fists in front of the body with the thumbs pointing outward. • (D) Extend arm and move hand rapidly right and left with the palm down.


5. What is NOT a requirement of cargo piping installed in tank vessels carrying grade D or E cargo ONLY?

o (A) Flanged joints shall be used for pipe sizes exceeding 2 inches in diameter. o (B) Connections at bulkheads must be made so that the plating does not form part of a flanged

joint. • (C) The cargo piping system shall be fixed. o (D) Piping through bunker spaces may be run through a pipe tunnel.


Page 2 of 15 Q345-Navigation and Deck General-Safety

8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 6. All inflatable liferafts have __________.

o (A) releasing hooks at each end • (B) water stabilizing pockets o (C) built in seats o (D) safety straps from the overhead


7. In illustration D041DG below, which is the symbol for the vertical plane midway between the fore and aft perpendiculars?

o (A) 2 • (B) 3 o (C) 4 o (D) 5


8. The governor brake on a lifeboat winch shall be capable of controlling the speed of lowering a fully equipped lifeboat from a cargo ship at __________.

o (A) not more than 90 feet per minute o (B) a safe speed only specified • (C) not more than 120 feet per minute o (D) not less than 120 feet per minute


9. 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


10. When selecting the fuel oil tanks for the "burn-out" of bunkers during a voyage consideration of all of the following must be taken with the EXCEPTION of __________.

• (A) flashpoint o (B) list o (C) trim o (D) stability

If choice A is selected set score to 1.


8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 11. What is NOT a function of the steam drum of a marine water-tube boiler?

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


12. 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) LOA o (C) LLL o (D) LWL


13. 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


14. The tops of the thwarts, side benches, and the footings of a lifeboat are painted which color?

o (A) Yellow o (B) White • (C) International orange o (D) Red


15. If you are unable to stop a diesel engine by any other means, you should __________.

o (A) secure the jacket water • (B) discharge a CO2 extinguisher in the air inlet o (C) pull off the distributor cap o (D) secure the starting air supply valve



8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 16. In illustration D041DG below, which of the following is the symbol for displacement?

• (A) 1 o (B) 2 o (C) 3 o (D) 4


17. Which statement is FALSE concerning precautions during fueling operations?

• (A) Fuel tanks should be topped off with no room for expansion. o (B) A fire extinguisher should be kept nearby. o (C) All engines, motors, fans, etc. should be shut down when fueling. o (D) All windows, doors, hatches, etc. should be closed.


18. In illustration D033DG below, which letter indicates a butt?

o (A) E • (B) D o (C) F o (D) J


19. On a vessel of 125,000 GT on an international voyage, how many international shore connection flange(s) is the vessel required to maintain onboard?

• (A) 1 o (B) 2 o (C) 3 o (D) 4


20. The spin axis of a gyroscope tends to remain fixed in space in the direction in which it is started. How does this gyroscope become north seeking so that it can be used as a compass?

o (A) The rotation of the Earth (Earth rate) automatically aligns the gyroscope with north, except for speed errors

o (B) By taking advantage of the property of gyroscopic inertia • (C) By mechanically or electrically applying forces to precess the gyroscope o (D) By starting the compass with the spin axis in a north/south position



8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 21. Where is the heel block located on a boom?

o (A) Near the midships guy o (B) Near the spider band • (C) At the base of the boom o (D) At the cargo hook


22. 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


23. Who must ensure that the emergency lighting and power systems on cargo vessels are operated at least weekly?

• (A) Master o (B) Deck officer assigned o (C) Chief Engineer o (D) Engineering officer assigned


24. 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


25. Which of the signals listed is required to be displayed at night while bunkering at a dock?

o (A) One red light over a white light • (B) One red light o (C) One red light over a yellow light o (D) Two red lights



8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 26. 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


27. Which of the following describes gyrocompass repeaters which reproduce the indications of the master gyrocompass?

• (A) They are accurate electronic servomechanisms o (B) They are accurate only in the Polar regions o (C) They are accurate only if the vessel is underway o (D) They are hand operated


28. 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


29. While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001° per gyro compass and the charted value of the range of lights is 359°T, what is the gyro compass error?

• (A) 2°W o (B) 2°E o (C) 1°E o (D) 1°W


30. 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



8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 31. What is the maximum weight the 30 ton capacity pedestal cranes shown in illustration D049DG can

lift in the twin mode?

o (A) 15 tons o (B) 30 tons • (C) 60 tons o (D) 120 tons


32. 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


33. In a tank vessel constructed in 1970, carrying grade A, B, C, or D liquid cargo, what is required to isolate cargo pumps from sources of vapor ignition?

• (A) gastight bulkheads o (B) general cargo spaces o (C) cofferdams o (D) passageways or living quarters


34. If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obtain true headings?

• (A) The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true

o (B) The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true

o (C) The readings are too high and the amount of the error must be subtracted from the compass to obtain true

o (D) The readings are too low and the amount of the error must be subtracted from the compass to obtain true


35. A thrust block is designed to __________.

o (A) absorb the shock of wave pressure at the bow


8/28/2017


• (B) transmit the thrust of the propeller to the vessel o (C) transmit the thrust of the engine to the propeller o (D) be placed between the engines and the foundation to absorb the vibration


36. 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


37. What is a system of reservoirs and connecting tubes in a gyro compass called?

• (A) The mercury ballistics o (B) The spider element o (C) The gyrotron o (D) The rotor


38. 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


39. 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.


40. 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


8/28/2017


• (D) Official Crew List


41. 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


42. 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


43. In illustration D033DG below, what is the strake of shell plating indicated by letter H known as?

o (A) bilge strake o (B) sheer strake o (C) outboard keel plate • (D) garboard strake


44. You are testing the external flotation bladder of an immersion suit and find it has a very slow leak. Which action should be taken?

o (A) Replace the inflation bladder. o (B) Replace the suit. • (C) Contact the manufacturer for repair instructions. o (D) Some leakage should be expected and a topping off tube is provided; no other action is

necessary.


45. Maritime Administration personnel may be allowed in the pilothouse and on the navigation bridge. Who is responsible for these personnel while in these areas of the vessel?

o (A) The most senior person present from the Maritime Administration o (B) The Navigational Officer o (C) The Chief Officer • (D) The Master of the vessel


8/28/2017



46. 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


47. Entering a harbor, you take a bearing on a range and get 338° per gyrocompass (pgc). The true bearing from the chart is 340°T. Variation for the area is 14°E. Your course is 329° per standard magnetic compass (psc) and 338°pgc. What is the deviation on this heading?

o (A) 3°E • (B) 3°W o (C) 5°E o (D) 5°W


48. One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is __________.

o (A) the extra weight required for the diesel reduction gearing • (B) a minimum speed for the engines that limits the minimum speed of the vessel o (C) the low efficiency of the system when a controllable pitch propeller is used o (D) the higher fuel consumption per SHP


49. 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



8/28/2017

Q345-Navigation and Deck General-Safety U.S.C.G. Merchant Marine Exam Master Less than 100 GRT to Master or Mate Less than 200 GRT Great Lakes and Inland Illustrations: 3 50. 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



8/28/2017


5/23/2016

D033DG

Adapted for testing purposes only

Further reproduction prohibited without permission



5/23/2016

D041DG





5/23/2016

D049DG




Documents

U.S.C.G. Merchant Marine Exam - dco.uscg.mil · • (D) reduce the free surface effect and lower the KG ... is 359°T, what is the gyro compass error? • (A) 2°W o (B) 2°E o (C)