National Maritime Center

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1 National Maritime Center Providing Credentials to Mariners (Sample Examination) Page 1 of 13

2 Choose the best answer to the following Multiple Choice Questions. 1. Which knot in illustration D030DG below represents a double sheet bend? (A) R o (B) F o (C) L o (D) T 2. After using a CO2 portable extinguisher, it should be. o (A) hydrostatically tested (B) recharged o (C) retagged o (D) put back in service if some CO2 remains 3. When are Operators of Uninspected Passenger Vessels required to keep their Coast Guard credential aboard their vessel? (A) only when carrying passengers for hire o (B) At all times o (C) only when operating at night o (D) only when operating more than one mile from shore 4. What is the appropriate first aid treatment for small cuts and open wounds? (A) Stop the bleeding, clean, medicate, and cover the wound o (B) Lay the patient down and cover the wound when the bleeding stops o (C) Apply an ice pack to the wound and cover it when the bleeding stops o (D) Apply a hot towel to purge the wound, then medicate and cover it 5. What is the period of validity of a Merchant Mariner Credential? o (A) 3 years (B) 5 years o (C) 1 year o (D) 2 years Page 2 of 13

3 6. You are on a single-screw vessel with a left-handed propeller making no way in the water. How will your vessel react when you apply right rudder? o (A) Bow will kick to port o (B) Bow will kick to starboard (C) Rudder alone has no effect on the vessel o (D) Stern will kick to port, then slowly swing to starboard 7. When passing a moored vessel in a narrow channel which actions will help minimize wake damage? o (A) Check the rudder several times while passing the vessel o (B) Stay on outside of channel and make a notation in the bell book (C) Reduce speed and make a notation in the bell book o (D) Go half astern when abeam of the moored vessel 8. What type of knot in illustration D030DG below is indicated by the Letter "N"? (A) Stopper hitch o (B) Rolling bowline o (C) Heaving line hitch o (D) Timber hitch 9. What should you do before CPR is started? o (A) Treat any bleeding wounds (B) Establish an open airway o (C) Insure the victim is conscious o (D) Make the victim comfortable 10. What is the danger to personnel associated with using carbon dioxide in an enclosed space? (A) Asphyxiation o (B) Skin burns o (C) Frostbite o (D) An explosive reaction Page 3 of 13

4 11. When a vessel with a single right-hand propeller backs to port which statement is TRUE? o (A) The vessel moves bodily to port without changing heading o (B) The vessel moves bodily to starboard without changing heading (C) The bow falls off to starboard o (D) The bow swings to port 12. What is the most useful drug to reduce a high fever? o (A) Aromatic spirits of ammonia (B) Aspirin o (C) Paregoric o (D) Bicarbonate of soda 13. Which extinguishing agent is most effective for combating wood fires? o (A) Dry powder o (B) Carbon dioxide o (C) Dry chemical (D) Water 14. What should you do if a crewman suffers a second-degree burn on the arm? o (A) Scrub the arm thoroughly to prevent infection o (B) Apply antiseptic ointment (C) Immerse the arm in cold water o (D) Drain any blisters 15. After an engine is started which is the best action(s) to take? o (A) Run the engine at idle until the temperature has increased o (B) Increase engine speed to insure adequate flow of oil to all parts of the engine (C) Check operating pressures and temperatures, and check for leaks o (D) Pay no attention unless there are unusual noises from the engine Page 4 of 13

5 16. What is a wobbling tail shaft an indication of? o (A) A tight tail shaft gland o (B) An engine that is misfiring (C) A worn stern bearing or misalignment o (D) Shallow water 17. A person has suffered a laceration of the arm. Severe bleeding has been controlled by using a sterile dressing and direct pressure. What should you do next? o (A) Administer fluids to assist the body in replacing the lost blood. o (B) Apply a tourniquet to prevent the bleeding from restarting. o (C) Remove any small foreign matter and apply antiseptic. (D) Apply a pressure bandage over the dressing. 18. In order to discharge a CO2 portable fire extinguisher, the operator must FIRST take which action? (A) Remove the locking pin o (B) Open the discharge valve o (C) Invert the CO2 extinguisher o (D) Squeeze the two trigger handles together 19. How do you operate a portable CO2 fire extinguisher? o (A) Turn cylinder upside-down. o (B) Point the horn down. o (C) Break the rupture disc. (D) Pull pin, squeeze grip. 20. When flammable liquids are handled in a compartment on a vessel, the ventilation for that area should be. o (A) shut down if an explosive mixture is present (B) operated continuously while vapors may be present o (C) operated intermittently to remove vapors o (D) available on standby for immediate use Page 5 of 13

6 21. Which is TRUE concerning the nozzle of a gasoline hose or can while fueling your vessel? o (A) Allow the nozzle to make contact with the fill opening to allow proper venting (B) Keep the nozzle in contact with the fill opening to guard against static spark o (C) Do not allow the nozzle to make contact with the fill opening to guard against static spark o (D) None of the above 22. How should a patient suffering from heat exhaustion be treated? (A) Moved to a cool room and told to lie down o (B) Kept standing and encouraged to walk slowly and continuously o (C) Given a glass of water and told to return to work after 15 minutes of rest o (D) Given a stimulant to increase blood flow to the brain 23. Why should all electrical appliances aboard a vessel be grounded and ground fault protected? (A) To protect personnel from electrical shock o (B) To increase their operating efficiency o (C) To prevent them from falling when the vessel rolls o (D) To prevent unauthorized personnel from operating them 24. What is the primary reason for starting motors, generators, and other spark producing devices to be mounted as high above the bilges as possible? o (A) To avoid dripping oil into the bilges o (B) To make them more accessible for repairs (C) To avoid contact with low lying vapors o (D) To keep them cool when the vessel is underway 25. Which type of bottom is best suited for holding an anchor of a small boat? o (A) Rocky (B) Mud and clay o (C) Gravel o (D) Sandy Page 6 of 13

7 26. What is the most effective treatment for warming a crew member suffering from hypothermia? o (A) Raising body temperature rapidly by placing hands and feet in hot water o (B) Laying prone under heat lamps to rewarm rapidly o (C) Running or jumping to increase circulation (D) Bundling the body in blankets to rewarm gradually 27. How does good housekeeping prevent fires on a vessel? (A) Eliminating potential fuel sources o (B) Improving personnel qualifications o (C) Allowing better access in an emergency o (D) Eliminating trip hazards 28. Upon completion of fueling a gasoline driven vessel it is necessary to perform which task? o (A) Start the engines immediately o (B) Keep ports, doors, windows, and hatches closed (C) Ventilate before starting engine o (D) None of the above 29. 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 30. Failure to notify the Coast Guard of an oil spill can carry a prison sentence of what duration? o (A) Not more than 1 year o (B) Not more than 2 years o (C) Not more than 3 years (D) Not more than 5 years Page 7 of 13

8 31. Who is responsible for any wake damage caused by a passing vessel? o (A) The person deemed competent to steer the vessel (B) The person is charge of the passing vessel o (C) The owner of the damaged vessel o (D) No one is responsible for wake damage 32. Which weakens a line the LEAST? o (A) Long splice o (B) Square knot o (C) Clove hitch (D) Short splice 33. Which knot in illustration D030DG below represents a stopper hitch? o (A) M (B) N o (C) L o (D) R 34. Following a Serious Marine Incident, a mariner directly involved in the incident is required to submit to alcohol testing within which time frame? o (A) 3 hours (B) 2 hours o (C) 6 hours o (D) 12 hours 35. If a gasoline engine turns over freely but will not start, the cause is generally. o (A) low lube oil level o (B) weak valve springs o (C) too heavy a load (D) a defective ignition system Page 8 of 13

9 36. Uninspected motor vessels constructed after 25 April 1940, which use fuel with a flash point of 110 F (43 C) or less, shall have at least what number of ventilator ducts for the removal of explosive or flammable gases, provided that they are not required to have ignition protected electrical components or fuel tanks that vent directly to the outside of the craft? o (A) 1 (B) 2 o (C) 3 o (D) When backing down with sternway, where will the pivot point of a vessel be located? o (A) The pivot point will be aft of the propellers (B) The pivot point will be about one-quarter of the vessel's length from the stern o (C) The pivot point will shift to the bow o (D) The pivot point will be about one-third of the vessel's length from the bow 38. Which knot in illustration D030DG below should be used to secure a line to a spar when the pull is perpendicular to the spar? o (A) E (B) F o (C) N o (D) P 39. You are aboard a single-screw vessel with a right-handed propeller. The vessel is dead in the water and the rudder is amidships. If you reverse your engine how would you expect your vessel to respond? o (A) The vessel would move astern without swinging o (B) The vessel would swing its stern to starboard, then to port o (C) The vessel would kick its stern to starboard (D) The vessel would kick its stern to port Page 9 of 13

10 40. You are going ahead on twin engines with rudder amidships. Your starboard engine stalls. To continue on course, which action should you take? (A) Apply left rudder o (B) Increase engine speed o (C) Apply right rudder o (D) Keep your rudder amidships 41. When making way in heavy seas you notice that your vessel's screw is being lifted clear of the water and racing. Which action will correct the situation? (A) Decrease the vessel's speed o (B) Increase the vessel's speed o (C) Shift the rudder back and forth several times o (D) Shift more weight forward 42. All of the following are recognized distress signals under the Navigation Rules EXCEPT which signal? o (A) The repeated raising and lowering of outstretched arms (B) A green star signal o (C) Red flares o (D) Orange-colored smoke 43. Why are diesel engines considered safer than gasoline engines? o (A) They operate at a lower speed o (B) They are more heavily built o (C) They can be easily reversed (D) The fuel used is less volatile 44. What type of knot in illustration D030DG below is indicated by the Letter "Q"? o (A) Round knot o (B) Square knot (C) Bowline o (D) Clove hitch Page 10 of 13

11 45. In the uninspected vessel regulations what does the "B" on a "B-II" fire extinguisher refer to? o (A) Size of the applicator o (B) Size of the nozzle (C) Class of fire that the extinguisher should be used on o (D) Size of the extinguisher 46. As a last resort, what can a tourniquet can be used for? o (A) To hold a victim in a stretcher o (B) To hold a large bandage in place o (C) To restrain a delirious victim (D) To stop uncontrolled bleeding 47. Which knot in illustration D030DG below represents a double blackwall hitch? o (A) F o (B) G (C) L o (D) R 48. As a general rule, how will your vessel lie when it is drifting in a locale where there is no current? o (A) The stern to the wind o (B) With the wind on the quarter o (C) The bow to the wind (D) The beam to the wind 49. When instructing a crew member concerning the right way to lift a weight, how should you instruct him/her? (A) Bend his knees and lift with his legs o (B) Bend his back and stoop with arms straight o (C) Bend his back and stoop o (D) Arch the back to add strength to the muscles Page 11 of 13

12 50. What is the expected range of a VHF radio transmission from a vessel to a shore station? (A) About 20 miles o (B) miles o (C) miles o (D) miles Page 12 of 13

13 National Maritime Center Providing Credentials to Mariners D030DG 5/23/2016 Adapted for testing purposes only Further reproduction prohibited without permission Page 13 of 13