National Maritime Center Providing Credentials to Mariners Q391 Deck General-Safety (Sample Examination) Page 1 of 20
Choose the best answer to the following Multiple Choice Questions. 1. To turn over an inflatable liferaft that is upside down, you should pull on which item? o (A) Canopy o (B) Sea painter o (C) Manropes (D) Righting strap 2. Which is a common occurrence when a vessel is running into shallow water? (A) "Squat" will cause a decrease in bottom clearance and an increase in draft o (B) The wake is less pronounced o (C) The vessel is more responsive to the rudder o (D) All of the above 3. The space containing the cylinders for the carbon dioxide (CO2) fire extinguishing system must be designed to preclude an anticipated ambient temperature in excess of which temperature? o (A) 80 F o (B) 95 F o (C) 120 F (D) 130 F 4. If given equal care, nylon line should last how many times longer than manila line? o (A) Three o (B) Four (C) Five o (D) Six 5. What must be accurately determined to assess the potential for progressive flooding after a vessel has been damaged? o (A) The operation of the machinery space bilge level alarms o (B) The capacity of the water sprinkler systems (C) The integrity of the water tight boundaries o (D) All of the above Page 2 of 20
6. When electrical equipment is involved in a fire, where should the stream of dry chemicals be directed? o (A) Used to shield against electrical shock (B) Aimed at the source of the flames o (C) Shot off a flat surface onto the flames o (D) Fogged above the equipment 7. Which agency issues a certificate of loading that is evidence that the rules and regulations concerning bulk grain cargoes have been observed? o (A) Department of Agriculture o (B) Public Health Service o (C) American Bureau of Shipping (D) National Cargo Bureau 8. The person in charge on the vessel and the person in charge at the facility must hold a meeting before starting the transfer of oil. Who must decide to start the transfer? (A) Both persons in charge o (B) The person in charge on the vessel o (C) The person in charge of either place that is doing the pumping o (D) The person in charge at the facility 9. You are on a large vessel fitted with a right-handed controllable-pitch propeller set at maximum forward pitch. Which statement about reversing is TRUE? o (A) The vessel will respond to the rudder until sternway is developed, then the stern will slew to starboard. (B) There will probably be a loss of steering control. o (C) When the pitch is reversed, the stern will slew to port even with headway. o (D) The vessel will have full rudder control throughout the speed change from ahead to astern. 10. Line throwing equipment should NOT be operated. (A) in an explosive atmosphere o (B) near a life raft canister o (C) during a rain storm o (D) by other than credentialed officers Page 3 of 20
11. Which statement about a tunnel bow thruster is TRUE? o (A) It will allow you to hold a position when the current is from astern. o (B) It is fully effective at speeds up to about six knots. o (C) It can be used to slow the ship in addition to backing down. (D) It provides lateral control without affecting headway. 12. All personnel on board a vessel should be familiar with the rescue boat's. o (A) navigational systems o (B) maintenance schedules o (C) fuel consumption rates (D) boarding and operating procedure 13. Sweat damage in a hatch full of canned goods in cartons will occur when which condition exists? o (A) When the air temperature is lower than the temperature of the cargo (B) When the dew point is higher than the temperature of the cargo o (C) When the dew point is lower than the temperature of the cargo o (D) When the air temperature is higher than the temperature of the cargo 14. What is the preferred agent used in fighting a helicopter crash fire? o (A) Halon o (B) Water (C) Foam o (D) CO2 15. You have determined the maneuvering characteristics of your vessel by taking the radar ranges and bearings of an isolated light while making a turn. The results are listed in illustration D035DG. Based on this data what is the advance for a turn of 30? Illustration D035DG o (A) 380 yards o (B) 420 yards (C) 470 yards o (D) 525 yards Page 4 of 20
16. 33 CFR sets forth the requirements of a Type I Marine sanitation device. What is the maximum coliform bacteria count for this type of system? (A) 1,000 per 100 Milliliters with no visible floating solids o (B) 200 per 1,000 milliliters and suspended solids less than 150 milligrams per liter o (C) 200 per 100 milliliters with suspended solids less than 150 milligrams per liter o (D) 1,000 per 1000 milliliters with no visible floating solids 17. If a powdered aluminum fire is being fought, which is the most effective extinguishing agent to use? o (A) Water fog o (B) Steam o (C) CO2 (D) Dry powder 18. Which data can NOT be found on a moisture equilibrium chart? o (A) Dry bulb temperature o (B) Vapor pressure o (C) Moisture content (D) Wet bulb temperature 19. According to the Chemical Data Guide, fuel oil number 6 has a flash point (degrees F) of. o (A) 65 o (B) 80-100 o (C) 110-140 (D) 150-430(cc) 20. How should the number "1" be pronounced when spoken on the radiotelephone? o (A) NEW-MAL-WON o (B) OO-NO (C) OO-NAH-WUN o (D) NUM-EV-WUN Page 5 of 20
21. You are at sea in an inflatable liferaft. In high latitudes, which presents the greatest danger? o (A) Asphyxiation due to keeping the canopy closed o (B) Collapse of the raft due to cold temperatures (C) Hypothermia caused by cold temperature o (D) Starvation 22. You are in port A in the United States, and your Certificate of Inspection has expired. You wish to go to port B in the United States for repairs and to complete the inspection. If the Officer-in-Charge Marine Inspection deems it safe, he may issue which document? o (A) Limited Certificate of Inspection (B) Permit to Proceed o (C) Temporary Certificate of Inspection o (D) Certificate of Seaworthiness 23. Who is responsible for any wake damage caused by a passing vessel? o (A) The person deemed competent to steer the vessel o (B) The owner of the damaged vessel (C) The person is charge of the passing vessel o (D) No one is responsible for wake damage 24. You are piloting your vessel in a narrow channel. How will the vessel react to a steep bank on your starboard side? o (A) The vessel will be bodily pushed away from the bank (B) The bow will swing away from the bank, and stern will swing into the bank o (C) The vessel will be bodily drawn into the bank o (D) The bow will swing toward the bank, and the stern will swing away from the bank 25. One of your crew members falls overboard from the starboard side. You should IMMEDIATELY take which action? (A) Throw the crew member a life preserver o (B) Position your vessel to windward and begin recovery o (C) Apply left rudder o (D) Begin backing your engines Page 6 of 20
26. When flammable liquids are handled in a compartment on a vessel, the ventilation for that area should be. o (A) available on standby for immediate use o (B) shut down if an explosive mixture is present (C) operated continuously while vapors may be present o (D) operated intermittently to remove vapors 27. Oil fires are best extinguished by. o (A) spraying with water o (B) cooling below the ignition temperature o (C) removing the fuel (D) cutting off the supply of oxygen 28. According to Coast Guard Regulations (46 CFR), when loading, or discharging oil in bulk at a dock, which of the following signals must be displayed? o (A) A yellow flag (day), red light (night) (B) A red flag (day), red light (night) o (C) A green flag (day), green light (night) o (D) A signal is not required for discharging oil, only gasoline 29. When bunkering at anchorage which of the following signals must be displayed? o (A) A red flag by day, red light by night (B) A red flag by day ONLY o (C) A red light by night ONLY o (D) No signal required at anchorage 30. The vessel shown in illustration D025DG has broken down and you are going to take her in tow. The wind is on her starboard beam. Both vessels are making the same amount of leeway. Where should you position your vessel when you start running lines? o (A) A o (B) B (C) C o (D) D Page 7 of 20
31. When are the conditions BEST for crossing a rough bar? o (A) During high water flood o (B) At low water slack o (C) At high water ebb (D) At high water slack 32. If a vessel takes a sudden, severe list or trim from an unknown cause, which action should you take FIRST? o (A) Counterflood (B) Determine the cause before taking countermeasures o (C) Assume the shift is due to off-center loading o (D) Assume the cause is environmental forces 33. You are on watch and the pilot has just anchored the vessel. What is the next thing that you should do after the anchor has been let go? o (A) Ring off the engines o (B) Escort the pilot to the accommodation ladder o (C) Make a round of the weather decks (D) Plot the vessel's position on the chart 34. 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) LWL o (C) LOA o (D) LLL 35. What quality of a diesel fuel is most significant for efficient combustion? o (A) Specific heat o (B) Viscosity o (C) Flash point (D) Volatility Page 8 of 20
36. The single turn method of returning to a man overboard should be used ONLY if which condition exists? o (A) The man is reported missing rather than immediately seen as he falls overboard o (B) A boat will be used to recover the man (C) The vessel is very maneuverable o (D) The conning officer is inexperienced 37. A fire in the galley ALWAYS poses which additional threat? (A) A grease fire in the ventilation system o (B) The contamination of food with extinguishing agent o (C) Spreading through the engineering space o (D) Causing loss of stability 38. Which of the following is required to have a Shipboard Oil Pollution Emergency Plan? o (A) All vessels, regardless of size and commercial application o (B) Any barge or ship constructed or operated in such a manner that no oil in any form can be carried aboard o (C) An oil tanker of 400 gross tons and above, or other ships of 150 gross tons and above (D) An oil tanker of 150 gross tons and above, or other ship of 400 gross tons and above 39. You abandoned ship in the North Atlantic and one of the crew members is hypothermic. During a SAR helicopter extraction which lifting device should be avoided when hoisting this patient to the aircraft? o (A) The rescue litter o (B) The rescue basket (C) The rescue sling o (D) The rescue net 40. How should the letter "T" be pronounced when spoken on the radiotelephone? o (A) TA HO o (B) TEE (C) TANG GO o (D) TU TU Page 9 of 20
41. What is the period of validity of a Merchant Mariner Credential? o (A) 1 year (B) 5 years o (C) 3 years o (D) 2 years 42. 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 45? (A) 130 yards o (B) 165 yards o (C) 195 yards o (D) 230 yards 43. A mechanical davit is designed to automatically accomplish which task? o (A) Energize the winch for the falls o (B) Set the brake on the winch o (C) Position the boat at the embarkation station (D) Lift the boat off the inboard chocks 44. Which term describes the distance a vessel moves parallel to the original course from the point where the rudder is put over to any point on the turning circle? o (A) Pivoting point o (B) Drift angle (C) Advance o (D) Transfer 45. Your vessel is conducting helicopter evacuation operations for an injured crew member. Which of the following statements is true concerning the hoisting line? o (A) A tag line is required to be attached to the hoist cable for securing (B) Allow the line to touch the deck to discharge the static electricity o (C) As a safety measure wrap the line around the patient before attaching it to the basket o (D) Secure the graining line to the deck railings Page 10 of 20
46. While steering by autopilot you notice that the vessel has deviated 15 degrees from course and there is no corrective rudder being applied. As a standard operating procedure you should first. o (A) immediately engage the trick wheel o (B) check the setting of the rudder adjustment (C) switch to hand steering o (D) check the setting of the weather adjustment 47. An implied warranty of seaworthiness on the part of the vessel's owner lies in which document? o (A) Cargo Manifest (B) Contract of carriage, i.e. Bill of Lading o (C) Classification Certificate o (D) Certificate of Inspection 48. Which knot/bend is used to form the bridle at the standing part of a gantline rigged to a stage? o (A) A sheet bend o (B) A carrick bend (C) A bowline o (D) A fisherman's bend 49. If you wear extra clothing when entering the water after abandoning ship it will accomplish which of the following? o (A) Make it more difficult to breathe o (B) Reduce your body heat (C) Help preserve body heat o (D) Weigh you down 50. What is a wet cargo? o (A) A cargo that contains hygroscopic moisture o (B) A cargo particularly susceptible to damage by moisture o (C) A liquid cargo carried in the deep tanks (D) A canned or bottled liquid such as beer Page 11 of 20
51. A tank with internal dimensions of 40 feet X 20 feet X 12 feet is pressed with fuel oil weighing 54 pounds per cubic foot. What is the weight, in short tons, of the liquid? o (A) 11.3 short tons (B) 259.2 short tons o (C) 518.4 short tons o (D) 135.0 short tons 52. What is the lifesaving signal used to indicate, "Landing here is highly dangerous"? o (A) Vertical motion of a red light o (B) Firing of a white star signal o (C) The code letter "K" given by light or sound signaling apparatus (D) Firing of a red star signal 53. In writing up the logbook at the end of your watch, you make an error in writing an entry. What is the proper means of correcting this error? o (A) Blot out the error completely and rewrite the entry correctly. o (B) Remove this page of the log book, and rewrite all entries on a clean page. (C) Cross out the error with a single line, and write the correct entry, then initial it. o (D) Carefully and neatly erase the entry and rewrite it correctly. 54. You are approaching a ship that is broken down and are preparing to take her in tow. BEFORE positioning your vessel to pass the towline, which action should you take? o (A) Install chafing gear on the towline (B) Compare the rate of drift between the ships o (C) Have traveling lizards rigged to guide the towline while it is paid-out o (D) Secure the bitter end of the towing hawser to prevent loss if the tow is slipped 55. How often are CO2 cylinders forming part of a fixed fire extinguishing system required to be pressure tested? o (A) year o (B) 2 years o (C) 6 years (D) 12 years Page 12 of 20
56. Which item do you NOT have to provide for the Coast Guard representative at the time of a stability test? o (A) Capacity plans showing the vertical and longitudinal centers of gravity of stowage spaces and tanks. o (B) General arrangement plans of decks, holds and inner bottoms (C) A stability letter. o (D) Tank sounding tables and draft mark locations. 57. Which of the following statement(s) is/are TRUE regarding twin pedestal cranes? o (A) A slew drive system provides for rotation of each crane. o (B) An independent slew drive system rotates the turntable. o (C) Each single boom is of the partial-level luffing type and is capable of limited rotation. (D) All of the above 58. You have abandoned ship in tropical waters. Which procedure(s) should be used during a prolonged period in a raft? o (A) Get plenty of rest. o (B) Wet clothes during the day to decrease perspiration. o (C) Keep the entrance curtains open. (D) All of the above 59. Flammable liquids should have what kind of label? o (A) White (B) Red o (C) Skull and crossbones o (D) Yellow 60. Which of the signals listed is required to be displayed at night while bunkering at a dock? o (A) One red light over a yellow light o (B) One red light over a white light (C) One red light o (D) Two red lights Page 13 of 20
61. Who is the legal owner of the Oil Record Book for a fixed or floating drilling rig? o (A) The company leasing the drilling rig o (B) The local state government where the drilling rig is located (C) The U.S. government o (D) The drilling rig's owner, until surrendered upon request 62. Who determines the number of rowing oars that must be carried in a motor-propelled lifeboat on a cargo vessel? (A) The lifeboat manufacturer o (B) The Master of the vessel o (C) The Coast Guard o (D) The American Bureau of Shipping 63. How does foam extinguish an oil fire? (A) By excluding the oxygen from the fire o (B) By removing the fuel source from the fire o (C) By increasing the weight of the oil o (D) By cooling the oil below the ignition temperature 64. Which is required to be marked on the vessel's life preservers? o (A) The vessel's home port (B) The vessel's name o (C) The stowage space assigned o (D) The crew member's article number 65. What is the name of tackle number 12 as shown in illustration D029DG below? o (A) Davit tackle o (B) Deck tackle (C) Threefold purchase o (D) Gin tackle Page 14 of 20
66. You are at sea and have received a General Emergency message announcing the outbreak of war in Europe. You are directed to comply with the instructions in NGA (NIMA) PUB 117, Chapter Eight. Which statement is TRUE? (A) You should attempt to submit an AMVER report to NSA. o (B) When over 200 miles from a port in the danger zone, you should not darken ship. o (C) You should only enter a port in the danger zone during hours of darkness. o (D) If on a coastwise voyage along the east coast of the U.S., you should put into the nearest port. 67. How do the lights on the outside of the canopy on an inflatable life raft operate? (A) Automatically when the raft is inflated o (B) By turning the globe clockwise o (C) By a light sensor o (D) By a switch at each light 68. A twin screw vessel, making headway with both engines turning ahead, will turn more readily to starboard if you take which action? o (A) Reverse starboard engine, rudder amidships (B) Reverse starboard engine, apply right rudder o (C) Reverse port engine, apply right rudder o (D) Reverse port engine, rudder amidships 69. Automatic fire dampers in ventilation systems are operated by use of which item? (A) A fusible link o (B) A heat or smoke detector o (C) A remote operated valve o (D) A CO2 system pressure switch Page 15 of 20
70. Which of the following applies in determining if all requirements of the Declaration of Inspection are met for oil transfer operations prior to bunkering from a shoreside facility? (A) Vessel and bunker facility must be independently inspected by the designated persons-incharge o (B) The bunker facility must be inspected by the designated person-in-charge of the vessel and vice versa for the vessel o (C) The vessel is responsible to provide an inspected oil hose o (D) Vessel and bunker facility must be inspected by a representative of the Coast Guard Captain of the Port Page 16 of 20
National Maritime Center Providing Credentials to Mariners D025DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 17 of 20
National Maritime Center Providing Credentials to Mariners D029DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 18 of 20
National Maritime Center Providing Credentials to Mariners D034DG 5/25/2018 Adapted for testing purposes only Further reproduction prohibited without permission Page 19 of 20
National Maritime Center Providing Credentials to Mariners D035DG 6/2/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 20 of 20