U.S.C.G. Merchant Marine Exam DDE – 1000/4000 HP Q633 ......DDE-1000/4000 HP Illustrations: 4 ....

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U.S.C.G. Merchant Marine Exam

DDE – 1000/4000 HP

Q633 Engineering Safety – Environmental Protection

(Sample Examination)

of 16 Q633 Engineering Safety – Environmental Protection

8/22/2019

Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4

Choose the best answer to the following Multiple Choice Questions

1. The wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from __________.

o (A) developing free surface moments o (B) collapsing • (C) filling completely o (D) developing free surfaces

If choice C is selected set score to 1.

2. In a compartment that has been completely flooded with water, the greatest pressure will be exerted __________.

o (A) along the top of the bulkhead • (B) along the bottom of any bulkhead o (C) at a point that is one-third from the bottom of the bulkhead o (D) at the vertical center of the bulkhead

If choice B is selected set score to 1.

3. Your vessel has run aground and upon taking fuel oil tank soundings, you find that a fuel tank level has increased. You therefore should suspect __________.

o (A) condensation in the fuel tank o (B) a load of bad fuel o (C) contamination from the salt water flushing system • (D) a crack in the hull portion of the fuel tank

If choice D is selected set score to 1.

4. Which type of respiratory protection is preferable for the repair/investigation personnel in a hydrogen sulfide (H2S) environment?

o (A) Self-Contained Demand-Type Breathing Apparatus (SCDBA) o (B) U.S. Navy Oxygen Breathing Apparatus (OBA) o (C) Emergency Escape Breathing Apparatus (EEBA) • (D) Positive Self-Contained Breathing Apparatus (SCBA)


5. The bypass valve on a self-contained breathing apparatus (SCBA) bypasses __________.

o (A) the regenerator in an emergency o (B) a breathing bag containing excessive pressure • (C) the regulator in an emergency o (D) oxygen to the atmosphere



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 6. You are involved in an emergency landing of a helicopter on the water. You should inflate your life

jacket __________.

o (A) upon entering the helicopter o (B) prior to reaching the water o (C) after reaching the water, but prior to exiting the helicopter • (D) after exiting clear of the helicopter


7. An immersion suit should be equipped with a/an __________.

o (A) air bottle for breathing o (B) whistle and hand-held flare • (C) whistle, strobe light, and reflective tape o (D) whistle, hand-held flare, and sea dye marker


8. The survival craft engine is fueled with __________.

o (A) kerosene o (B) unleaded gasoline • (C) diesel oil o (D) liquefied gas


9. Using a sea anchor when in a life raft will __________.

• (A) reduce the drift rate of the life raft o (B) keep the life raft from turning over o (C) aid in recovering the life raft o (D) increase your visibility

If choice A is selected set score to 1.

10. Your vessel is equipped with totally enclosed lifeboats. Which of the following statements is correct should the boat be enveloped in flames?

o (A) The ventilators will automatically close by the action of fusible links. o (B) The diesel engine will take its air supply from outside the lifeboat to prevent asphyxiation of

the crew. o (C) A water spray system to cool the outside of the boat is operated by a high-volume manual

pump. • (D) A pressurized air tank will provide approximately ten minutes of air for the survivors and the

diesel engine.



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 11. Which of the following statements is true concerning carbon dioxide when used as a fire

extinguishing agent?

o (A) Its total cooling effect is far greater than water. o (B) Carbon dioxide should be applied slowly to a large engine room fire. o (C) Carbon dioxide is corrosive when exposed to fire. • (D) Its smothering effect is excellent for class "B" fires.


12. Which of the following statements is true concerning the Halon 1301 fire extinguishing agent?

o (A) The agent cannot be used on electrical fires because it leaves a residue. o (B) The agent is less effective than carbon dioxide. • (C) Halon extinguishes the fire by a chain breaking reaction. o (D) The agent is highly toxic as stored in pressurized cylinders.


13. Which of the following statements is true concerning the fire extinguisher shown in the illustration? Illustration SF-0006

o (A) There is no danger of reflash in using the illustrated extinguisher on a class "B" fire. o (B) The initial discharge of the extinguisher should be at close range to scatter the burning

material. o (C) The illustrated extinguisher must never be used in conjunction with water. • (D) The agent may be applied in short bursts by opening and closing the squeeze nozzle


14. A hand portable CO2 fire extinguisher is effective on burning oil only __________.

o (A) to prevent rekindling • (B) if applied promptly o (C) if applied in connection with foam o (D) if attempts to extinguish the fire with low velocity fog have failed


15. A low velocity fog applicator is retained in an all-purpose nozzle by a bayonet joint. The applicator is prevented from rotating in the joint by __________.

o (A) a locknut o (B) a keeper screw • (C) a spring-loaded catch o (D) water pressure



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 16. When the cotton cover of a fire hose becomes oily or greasy, it should be washed with a solution of

mild soapy fresh water and __________.

o (A) a wire brush o (B) cornstarch • (C) a soft-bristled brush o (D) paint thinner


17. During cargo operations, a deck fire has occurred due to a leaking cargo line. You should FIRST __________.

o (A) blanket the cargo spill with foam o (B) apply CO2 on the burning fuel at its source o (C) prevent the spread of fire with a foam dam • (D) stop the transfer of cargo


18. What is the purpose of opening the doors and portholes in figure 2 of the illustration? Illustration SF-0013

o (A) To allow water used to fight the fire to flow out of the superstructure. o (B) To provide air flow around the compartment in order to contain the fire. • (C) To allow venting of combustion products from the fire to the atmosphere. o (D) To keep the hose teams cool.


19. When approaching a fire from windward, you should shield firefighters from the fire by using an applicator and __________.

• (A) low-velocity fog o (B) a straight stream of water o (C) high-velocity fog o (D) foam spray


20. When combating a major electrical fire at sea, the main consideration is __________.

o (A) preventing salt water damage to electrical equipment • (B) reducing the possibility of electrical shock to personnel o (C) eliminating the toxic fumes from burning insulation o (D) preventing a total loss of electrical power



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 21. In fighting a fire in a fuel tank, the FIRST action you should attempt is to __________.

o (A) begin transferring the fuel to other tanks o (B) top off the tank to force out all vapors o (C) station someone at the fixed CO2 release controls • (D) secure all sources of fresh air to the tank


22. The worst atmospheric condition for dispersion of hydrogen sulfide is __________.

o (A) full sun with high winds • (B) nearly calm, clear nights or early morning o (C) gusty winds with rain o (D) heavy rain


23. The highest concentration of a harmful substance to which a person may be exposed without danger to health, is termed the __________.

o (A) odor threshold • (B) threshold limit value o (C) vapor pressure o (D) tolerance point


24. For hydrogen sulfide detection, sensitized tapes indicate the presence of this gas by means of discoloration of an exposed spot on the tape. The shade of the color on the spot depends upon the concentration of the gas and __________.

o (A) air temperature during exposure o (B) air pressure during exposure o (C) humidity during exposure • (D) duration of exposure


25. When required to work in an area where explosive gases may accumulate, you should use tools which are __________.

o (A) approved by the Coast Guard o (B) high carbon steel o (C) fixed with a ferrous cover • (D) non-sparking



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 26. In accordance with 33 CFR Subchapter O (Pollution), the "Discharge of Oil Prohibited" placard is

required on which of the following vessels?

• (A) U.S. vessels 26 feet or more in length o (B) foreign vessels when engaged in noncommercial service o (C) U.S. vessels less than 26 feet in length o (D) foreign vessels not in U.S. navigable waters


27. In accordance with 46 CFR Subchapter D (Tank Vessels), which of the following statements is true concerning the equipment required in a fireman's outfit?

o (A) The flashlight must be of an approved three cell fireproof type. • (B) The assembled lifeline shall have a minimum breaking strength of 1,500 pounds (683.8 kg). o (C) The combustible gas indicator hose must be 100 feet (30.48 m) in length. o (D) All protective clothing must be electrically non-conductive.


28. An ullage reading is the distance from a given point at the __________.

o (A) top of the liquid down to the tank bottom o (B) sounding tube to either side of the tank o (C) top of the tank down to the bottom of the tank • (D) top of the sounding tube down to the surface of the liquid


29. One consideration for determining the safest maximum rate at which bunker fuel may be received is by the __________.

o (A) distance to the fuel storage tanks ashore o (B) type of fuel transfer pump o (C) size of the fuel storage tanks ashore • (D) number of tanks to be filled


30. In accordance with 33 CFR Subchapter O (Pollution), which of the following is NOT required to be provided as part of the appendixes of the Shipboard Oil Pollution Emergency Plan?

• (A) A list of personnel duty assignments. o (B) A list which specifies who will be responsible for informing the parties listed and the priority in

which they must be notified. o (C) A list of agencies or officials of Coastal State administrations responsible for receiving and

processing incident reports. o (D) A list of agencies or officials in regularly visited ports.



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 31. A class "B" fire develops on the weather deck amidships of a moored tank vessel. The fire party

should man the __________.

o (A) leeward monitor and direct the foam onto a vertical surface while applying a solid stream of water to wash residual fuel over the side away from the pier

• (B) windward monitor and direct the foam onto a vertical surface while standing by with a charged hose to protect the monitor operator with water fog if needed

o (C) leeward monitor and direct the foam onto a vertical surface while applying water fog to protect the monitor operator

o (D) windward monitor and direct the foam onto a vertical surface while applying water fog to the fire


32. What would be the classification of the fire if the sources shown in illustration #1 were to catch fire? SF-0051

o (A) Class A o (B) Class B • (C) Class C o (D) Class D


33. The blocking open or absence of fire dampers can contribute to __________.

o (A) the accumulation of explosive gases o (B) faster cooling of the fire • (C) the fire spreading by way of the ventilation system o (D) fixed foam systems to be ineffective


34. In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ____________.

• (A) convection o (B) conduction o (C) radiation o (D) ventilation



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35. In figure 1 of the illustration, fire would spread to compartment "B" by __________. Illustration SF-0013

• (A) conduction o (B) radiation o (C) convection o (D) impingement


36. The most likely location for a liquid cargo fire to occur on a tanker would be __________.

o (A) in the amidships house o (B) at the main deck manifold o (C) at the vent header • (D) in the pumproom


37. Paints and solvents used aboard a vessel should be __________.

o (A) drained into a common container after each use o (B) stowed safely at the work site until work is completed o (C) covered with a fine mesh screen to protect from ignition sources • (D) returned to the paint locker after each use


38. The source of power for the CO2 discharge alarm siren is obtained from __________.

• (A) the flow of CO2 under pressure o (B) the general alarm 24-volt DC bus o (C) the emergency power and lighting bus o (D) all of the above


39. Fire detecting systems on merchant vessels may be arranged to sense __________.

o (A) smoke o (B) rate of temperature rise o (C) ionized particles • (D) all of the above



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40. Clogged limber holes can endanger a ship's stability by __________.

o (A) preventing the free surface effect o (B) decreasing off-center weight o (C) increasing water area on the keelson • (D) preventing water from draining to the bilge well


41. If the cause of severe list or trim of a vessel is due to off-center ballast, counter-flooding into empty tanks will __________.

o (A) increase the righting moment • (B) decrease list or trim o (C) increase the righting arm o (D) increase list or trim


42. What standard mathematical formula is commonly used to calculate a vessels waterplane area for stability purposes?

o (A) Pythagorean Rule • (B) Simpsons Rule o (C) Standard Logarithmic Rule o (D) Reynolds Number Rule


43. A vessel trimmed down by the bow has __________.

o (A) a low mean draft o (B) a greater draft aft than forward • (C) a greater draft forward than aft o (D) zero trim


44. The symbol shown in the illustration and used as a reference from which the height of the center of gravity is measured, is item number __________. Illustration SF-0022

o (A) 5 o (B) 4 o (C) 3 • (D) 2



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Q633 Engineering Safety-Environmental Protection U.S.C.G. Merchant Marine Exam DDE-1000/4000 HP Illustrations: 4 45. When preparing to pump flammable liquids with a centrifugal pump, you should __________.

o (A) draw a small quantity of liquid to prime the pump • (B) check for gland leakage and any fire hazard o (C) have a standby pump running with the discharge valve closed o (D) lift the relief valve by hand to check its operation


46. A high concentration of hydrogen sulfide gas is most likely to be found in which of the locations listed?

o (A) Fireroom bilges where hydrazine has accumulated. • (B) Sewage compartment bilges where leaked sewage has accumulated. o (C) Engine room bilges where chemical cleaners and solvents have accumulated. o (D) Emergency battery storage compartment where discharge gases have accumulated.


47. While in a foreign port, burning and welding repairs are to be carried out on a section of heating coil located in a tank having last contained a grade "D" product. Which of the following procedures should be followed when a certified marine chemist is not available?

• (A) Prior to any hot-work, an inspection must be made by the senior officer present, and an entry made in the official logbook.

o (B) It is solely the chief engineer's responsibility to ensure all safety precautions are observed, and all entries are to be made in the engine room log.

o (C) The repair work cannot be done at this time due to the lack of the chemist's certificate. o (D) Repairs should proceed as scheduled since a chemist's certificate is not required for that type

of work.


48. A health hazard term listed on a Safety Data Sheet (SDS) that indicates allergic-like reaction in some people after repeated exposure is __________.

• (A) sensitizer o (B) oxidizer o (C) pyrophoric hazard o (D) skin contact hazard



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49. Your ship has left shore on the east coast of the United States, how far must you be from shore tobe able to discharge paper waste into the Atlantic Ocean?

o (A) 12 nautical mileso (B) 3 nautical mileso (C) 25 nautical miles• (D) You may not discharge paper waste into the Atlantic Ocean.


50. In accordance with 33 CFR Subchapter O (Pollution), each operation involving the transfer of oil oroily mixture that requires an entry in the Oil Record Book shall be fully recorded __________.

• (A) without delayo (B) within 12 hours of completion of the operationo (C) within 24 hours of completion of the projecto (D) within 48 hours of completion of the operation



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10/3/2018

SF-0006

Adapted for testing purposes only from Damage Controlman

NAVEDTRA 14057

Further reproduction prohibited without permission. of 16 Q633 Engineering Safety – Environmental Protection


10/3/2018

SF-0013

Adapted for testing purposes only from Marine Fire Prevention, Firefighting and Fire Safety

U.S. Department of Transportation Maritime Administration

Further reproduction prohibited without permission of 16 Q633 Engineering Safety – Environmental Protection


10/3/2018

SF-0022

Vessel Dimensional Data Symbols

Adapted for testing purposes only from Merchant Marine Deck Examination Reference

Material, Operating Manual for Deep Driller

Copyright © 1989 COMDTPUB P16721.29

Further reproduction prohibited without permission of 16

Q633 Engineering Safety – Environmental Protection


4/17/2019

SF-0051

Adapted for testing purposes only from Marine Fire Prevention, Firefighting and Fire Safety

1995 by the U.S. Department of Transportation Maritime Administration

Further reproduction prohibited without permission of 16 Q633 Engineering Safety – Environmental Protection

U.S.C.G. Merchant Marine Exam DDE – 1000/4000 HP Q633 ......DDE-1000/4000 HP Illustrations: 4 ....

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