This is an interactive test. Read each question and select the proper answer by clicking on the appropriate answer. If a "Y" appears, your choice is correct. If a "N" appears, more study may be in order.
51: You are the licensed Master of a 100 GT towing vessel sailing coastwise. What percentage of the deck crew must be able to understand any order spoken by the officers?
N a. 50% N b. 65% Y c. 75% N d. 100% 82: Floors aboard ship are __________.
N a. also called decks Y b. vertical transverse plates connecting the vertical keel with the margin plates N c. large beams fitted in various parts of the vessel for additional strength N d. found in passenger and berthing spaces only 155: You are transporting dangerous cargo on your vessel. You must inspect this cargo __________.
Y a. daily N b. daily, at sea only N c. after encountering rough weather N d. after loading and prior to arrival in port only 179: The minimum temperature required to ignite gas or vapor without a spark or flame being present is called __________.
N a. flash point N b. fire point Y c. autoignition temperature N d. lower explosive limit 189: Reid vapor pressure is __________.
N a. exerted by liquid cargo on the sides of a tank N b. exerted by liquid cargo on a cargo hose body N c. the lowest temperature and pressure that will cause a flammable liquid to give off vapors Y d. a measurement of the amount of flammable vapors given off by a liquid at a certain temperature 218: What is the main purpose of dunnage?
N a. To act as ballast for light vessels Y b. To provide ventilation and drainage for cargo N c. To secure the tarpaulins in place N d. To support weakened bulkheads 246: The force exerted by a propeller which tends to throw the stern right or left is called __________.
N a. slip Y b. sidewise force N c. rotational force N d. thrust 256: When fruit is carried as refrigerated cargo, the most frequent cause of its being infected at the discharge port is __________.
N a. leaks in the ship's refrigeration system Y b. improper cleaning of the cargo spaces N c. carriage at the wrong temperature N d. improper precooling of the cargo spaces 291: You are the licensed operator of a 100 GT towing vessel making coastwise runs. Whenever a crew member is discharged from your vessel you must __________.
N a. issue a Certificate of Discharge and make an entry in his Continuous Discharge Book Y b. issue a Certificate of Discharge or make an entry in his Continuous Discharge Book N c. retain the crew member's Continuous Discharge Book onboard N d. retain the crew member's Certificate of Discharge onboard 319: Static electricity may be built up by the __________.
N a. flow of petroleum through pipes N b. spraying or splashing of petroleum N c. settling of solids or water in petroleum Y d. All of the above 330: You have completed a Dangerous Cargo Manifest for dangerous cargoes loaded on board. It should be kept in a conspicuous location __________.
N a. in the radio room N b. in the ship's office Y c. on or near the bridge N d. outside the Captain's stateroom 346: A vessel is equipped with a single right-handed screw. With rudder amidships and calm wind, the vessel will most likely back __________.
N a. straight astern Y b. to port N c. to starboard N d. in no particular direction 378: In preparation for receiving chilled reefer cargo, the reefer space has been precooled for over twenty-four hours. Loading may begin when the space has been cooled to a temperature between __________.
N a. -10°F (-23°C) and +10°F (-12°C) N b. 12°F (-11°C) and 20°F (-7°C) Y c. 28°F (-2°C) and 40°F ( 4°C) N d. 42°F (6°C) and 55°F (13°C) 416: While moving ahead, a twin-screw ship has an advantage over a single-screw ship because __________.
N a. correct trim will be obtained more easily N b. drag effect will be cancelled out Y c. side forces will be eliminated N d. speed will be increased 427: What is the greatest danger of an overriding tow?
N a. Fouling of the towing hawser N b. Loss of steering N c. Tripping Y d. Collision between the tow and the stern of the towing vessel 497: Which type of fiber towing hawser is preferred for towing astern?
N a. Manila N b. Polypropylene Y c. Nylon N d. Dacron 515: When compared to a fiber towing hawser, what is NOT an advantage of a wire towing hawser?
N a. Wire is easy to handle when properly spooled on the drum of a towing winch. Y b. Wire has more spring and shock resistance than fiber. N c. Wire can be used to tow heavier loads because of its smaller diameter and more manageable size. N d. Wire is subject to less deterioration if properly maintained. 558: A heated bulkhead has the effect on a hygroscopic commodity of __________.
N a. causing moisture to accumulate against the bulkhead N b. lowering the vapor pressure of the commodity N c. lowering the dew point of the air Y d. raising the vapor pressure of the commodity 649: Before a tank is to be crude oil washed, the oxygen content in the tank must be measured at a position __________.
N a. immediately above the level of the oil N b. at the top of the tank N c. in the vent riser Y d. one meter from the deck 672: When towing alongside (breasted tow), more forward movement will be imparted to the tow by __________.
N a. increasing the angle of line pull to the keel axis of the tow Y b. reducing the angle of line pull to the keel axis of the tow N c. positioning the towing vessel on the forward end of the tow N d. shortening the length of the tow line 683: Barges and vessels are ballasted before departure to __________.
Y a. improve their stability N b. avoid polluting waters where liquid ballast may not be discharged N c. prevent free surface effects N d. allow movement of liquids within the barge for tank cleaning 684: Right-laid line should be coiled __________.
Y a. clockwise N b. counterclockwise N c. either clockwise or counterclockwise N d. on a reel 727: Which space(s) is(are) deducted from gross tonnage to derive net tonnage?
N a. Galley fitted with range or oven N b. Open structures N c. Passenger spaces Y d. Boatswain's stores 732: Which action should be taken FIRST if your tow is sinking in shallow water?
Y a. Pay out the towline until the sunken tow reaches bottom. N b. Sever the towline. N c. Immediately head for the nearest shoreline. N d. Contact the Coast Guard. 736: You notice that your speed has decreased, the stern of your vessel has settled into the water, and your rudder is sluggish in responding. The MOST likely cause is __________.
N a. mechanical problems with the steering gear Y b. shallow water N c. loss of lubricating oil in the engine N d. current 908: You must load as much of a large shipment of case goods as possible into a hold which has 24,400 cubic feet of space. Each case measures 2 feet by 2 feet by 4 feet and weighs 448 pounds. If you allow for broken stowage of 15%, how many long tons can be loaded?
N a. 54 N b. 207 Y c. 259 N d. 351 953: When bunkering at anchorage which of the following signals must be displayed?
N a. A red flag by day, red light by night Y b. A red flag by day ONLY N c. A red light by night ONLY N d. No signal required at anchorage 984: To coil a right-laid rope, you should coil the line in __________.
Y a. a clockwise direction N b. a counterclockwise direction N c. alternating clockwise and counterclockwise directions N d. either a clockwise or counterclockwise directions 1033: Each crewmember has an assigned firefighting station. This assignment is shown on the __________.
N a. fire fighting plan N b. shipping articles N c. Certificate of Inspection Y d. muster list 1087: The turning circle of a vessel is the path followed by the __________.
Y a. center of gravity N b. outermost part of the ship while making the circle N c. bow N d. tipping center 1164: Which type of line floats?
N a. Dacron N b. Nylon N c. Old manila Y d. Polypropylene 1280: Vertical structural members attached to the floors that add strength to the floors are called __________.
N a. boss plates N b. buckler plates Y c. stiffeners N d. breast hooks 1389: A band or collar on the top end of a boom to which the topping lift, midships guy, and outboard guys are secured, is called the __________.
N a. collar band N b. guy band N c. pad eye collar Y d. spider band 1465: The maneuver which will return your vessel in the shortest time to a person who has fallen overboard is __________.
N a. engine(s) crash astern, no turn Y b. a single turn with hard rudder N c. a Williamson Turn N d. two 180° turns 1552: Which picture represents a stopper hitch? (DO30DG )
N a. M Y b. N N c. R N d. L 1622: What is NOT an indication that pack ice may be nearby?
Y a. The presence of icebergs N b. Ice blink N c. Absence of wave motion N d. Sighting a walrus in the Arctic 1650: To reduce the number of strakes at the bow, two strakes are tapered and joined at their ends by a single plate. This plate is known as a __________.
N a. cover plate N b. joiner N c. lap strake Y d. stealer plate 1856: When passing a hawser to the dock you would first use what line?
N a. Gantline Y b. Heaving line N c. Preventer N d. Warp 1941: The helm command "Left twenty" means __________.
N a. change course twenty degrees to the left Y b. put the rudder left twenty degrees N c. put the rudder hard left for the first twenty degrees of swing N d. put the rudder left twenty degrees and then ease back as the vessel starts swinging 2052: You are proceeding under NCS (Naval Control of Shipping) when it becomes necessary to send a distress message. Which precedence would you assign this message?
Y a. O (IMMEDIATE) N b. P (PRIORITY) N c. R (ROUTINE) N d. Z (FLASH) 2085: What purpose does a bridge fitting serve when lashing containers?
N a. Ties a container stack to the deck N b. Ties a container to the container below it N c. Restrains racking loads Y d. Restrains the container against horizontal motion 2122: What is the name of tackle number 9? (DO29DG )
N a. Single purchase N b. One-two tackle N c. Double whip Y d. Luff tackle 2186: What is the mechanical advantage of tackle number 7? (DO29DG )
N a. 0 N b. 0.5 N c. 1 Y d. 2 2253: What is the area of a circle with a radius of 17 feet after a sector of 57° has been removed?
Y a. 764.17 sq. ft N b. 190.66 sq. ft N c. 145.27 sq. ft N d. 36.85 sq. ft 2256: 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 with the results as shown. Based on this information, what is the transfer for a turn of 180°? (D034DG )
N a. 875 yards Y b. 910 yards N c. 975 yards N d. 1015 yards 2484: The type of joint formed when an edge of one plate is laid over the edge of the plate to which it is riveted is a __________.
N a. grip joint N b. strap joint N c. thread joint Y d. lap joint 2603: Which situation requires you to furnish a notice of marine casualty to the Coast Guard?
Y a. Your vessel is at anchor and grounds at low tide with no apparent damage. N b. You collide with a buoy and drag it off station with no apparent damage to the vessel or the buoy. N c. A seaman slips on ice on deck and sprains his ankle, requiring an ace bandage. N d. Storm damage to the cargo winch motors requires repairs costing $19,000. 2699: The thickness of a 30.6 pound plate is __________.
N a. 3/8" N b. 1/2" Y c. 3/4" N d. 1" 2844: Naval authorities would NOT give orders about which of the following, when the vessel is under control of the Naval Control of Shipping Organization?
N a. Visual communication at sea N b. Rescue operations N c. Diversions Y d. Schedules for loading cargo 3048: The proximity of pack ice may be indicated by __________.
N a. changes in seawater salinity Y b. glare on clouds on the horizon N c. changes in air temperature N d. icebergs 3148: The part of the anchor indicated by the letter H is the __________. (D038DG )
N a. fluke N b. shank N c. tripping palm Y d. crown 3442: The part of the anchor indicated by the letter J is the __________. (D038DG )
N a. crown N b. shank Y c. bill N d. tip 3459: The pea is indicated by which letter? (D038DG )
Y a. J N b. H N c. G N d. F 3462: Under U.S. law, what is the penalty for assaulting the Master?
N a. Fine of not more than $1000 N b. Fine of not more than $500 and/or imprisonment for not more than 1 year Y c. Imprisonment for not more than 2 years N d. Revocation of the Merchant Mariner's Document (and license if applicable) 3472: You are the Master of a 500 gross ton passenger vessel operating on rivers. Your vessel accidentally runs aground. Under the regulations for passenger vessels, you must notify the __________.
Y a. nearest Coast Guard Marine Safety or Marine Inspection Office as soon as possible N b. Coast Guard only if the grounding results in damage to property in excess of $(SA)25,000 N c. Coast Guard only if the grounding results in a loss of life N d. Coast Guard only if the grounding results in injury to personnel 3511: The wheel on the windlass with indentations for the anchor chain is the __________.
N a. grabber Y b. wildcat N c. locking ring N d. pawl 4062: The signal man assisting the crane operator has his forearm vertical, forefinger pointing up, and moves his hand in a small horizontal circle. This is the signal to __________.
N a. swing N b. lower Y c. hoist N d. extend 4211: Pedestal cranes have limit switches to restrict movement of which function(s)?
N a. Hoist upper & lower limits N b. Luff travel limits N c. Rider block hoist upper & lower limits Y d. All of the above 4244: What is meant by the term "luffing the boom" of a crane?
N a. Stopping the boom Y b. Topping or lowering the boom N c. Moving the boom left or right N d. All of the above 4378: Which statement concerning an automatic towing engine is FALSE?
N a. It automatically maintains tow line tension. N b. It prolongs the life of the hawser by distributing chafing as the hawser is paid out and taken in. Y c. As tension on the hawser increases, more line is taken in by the automatic towing engine. N d. As tension on the hawser decreases, more line is taken in by the automatic towing engine.