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.
131: You are onboard a 120 GT uninspected sea going tug which carries one Master and one mate of towing vessels, and four seamen when underway. How many of the four seamen must have a rating as able seamen if the voyage is under 600 miles?
N a. 1 Y b. 2 N c. 3 N d. 4 203: How does the effect known as "bank suction" act on a single-screw vessel proceeding along a narrow channel?
N a. It pulls the bow toward the bank. N b. It pushes the entire vessel away from the bank. Y c. It pulls the stern toward the bank. N d. It heels the vessel toward the bank. 213: You are the Master of a single-screw vessel. You are docking at a port which has no tugs available. You decide to drop the offshore anchor to help in docking. The amount of chain you should pay out is __________.
N a. 5 to 7 times the depth of the water Y b. 1 1/2 to 2 times the depth of the water N c. equal to the depth of the water N d. you should NEVER use the anchor to help in docking 287: On the cargo manifest, the weight of the cargo inside a box is called __________.
N a. gross weight Y b. net weight N c. light weight N d. rate weight 327: You are on a multiple product tankship and carrying methyl acrylate, diethanolamine, and triethylamine. Which statement is TRUE?
N a. Methyl acrylate may be loaded in a tank adjacent to diethanolamine but not triethylamine. Y b. The heating coils to the cargo tank loaded with methyl acrylate must be blanked off. N c. Valve components made of aluminum, copper, or zinc may not be in contact with the cargoes. N d. Each crew member working on deck must have an emergency escape breathing apparatus. 337: On a coastwise tugboat of 199 GT, on a voyage over 600 miles, what percentage of the deck crew (excluding licensed officers) must hold a document of able seaman?
Y a. 65% N b. 50% N c. 25% N d. 0% 375: The best line for towing small vessels is __________.
N a. three strand nylon Y b. double-braided nylon N c. polypropylene N d. manila 461: Where is the best location to install a towing hook?
N a. Forward of the towing bitts N b. On the fantail N c. Near the Norman Pins Y d. Just aft of amidships 472: On a long ocean tow, the bridle should be made up of two equal lengths of __________.
Y a. chain N b. wire N c. nylon N d. manila 517: What is the purpose of the intermediate spring?
N a. Serves as a backup for the main tow hawser in case of failure. Y b. Provides weight and flexibility to the total tow makeup. N c. Lengthens the main tow hawser to keep the tow in step. N d. Distributes the towing load. 531: Spring loaded towing hooks are used in towing to __________.
N a. absorb and cushion the shock of towing N b. prevent whiplash Y c. trip and release when the pull of the towing hawser exceeds a predetermined limit N d. make it easier to attach and release the tow 538: Using the graph shown, if the dry bulb temperature is 80°F (27°C) and the wet bulb temperature is 70°F (21°C), what is the relative humidity in a cargo hold? (D008DG )
N a. 45% N b. 52% Y c. 58% N d. 65% 548: Using the graph shown, if the dry bulb temperature is 55°F (13°C) and the wet bulb is 50°F (10°C), what is the relative humidity? (D008DG )
N a. 55% Y b. 70% N c. 75% N d. 82% 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 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 688: Who would normally certify that all preparations have been made and all regulations observed prior to loading a cargo of bulk grain?
N a. American Bureau of Shipping N b. U.S. Coast Guard Y c. National Cargo Bureau N d. Master of the vessel 730: In a Williamson turn, the rudder is put over full until the __________.
N a. vessel has turned 90°From her original course Y b. vessel has turned 60°From her original course N c. vessel is on a reciprocal course N d. emergency turn signal sounds 762: A towing winch, that handles a wire towline, must have all of the following EXCEPT a ____________ .
N a. device that evenly spools and tightly winds the towline N b. brake with holding power appropriate for the vessel's horsepower or bollard pull N c. brake that can be operated when there is no power available to drive the winch Y d. source of emergency power to operate the winch 834: A whipping on a fiber line __________.
Y a. keeps the ends from fraying N b. strengthens it N c. protects your hands N d. becomes part of a splice 915: What is the period of validity of a Cargo Ship Safety Radio Certificate?
N a. 6 months N b. 12 months N c. 24 months Y d. 60 months 944: When caring for natural-fiber line, you should NEVER __________.
N a. dry the line before stowing it Y b. lubricate the line N c. protect the line from weather N d. slack off taut lines when it rains 979: A cargo of oil has a coefficient of expansion of .0005 per degree F. If this cargo is loaded at 70°F, and a cargo temperature of 90°F is expected at the discharge port, how many barrels would you expect to unload if you loaded 10,000 barrels?
N a. 9,900 N b. 9,990 N c. 10,010 Y d. 10,100 981: When a vessel is entering or leaving a port, a record of engine speeds is kept in the __________.
Y a. bell book N b. deck rough log N c. Official Logbook N d. engine rough log 996: With a following sea, a vessel will tend to __________.
N a. heave to N b. pound N c. reduce speed Y d. yaw 1209: When cargo is being worked using a Burton or married fall system, which part of the cargo gear is most likely to fail?
N a. Boom N b. Gooseneck Y c. Guy tackle N d. Topping lift 1299: Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom?
N a. Cargo whip N b. Gooseneck fitting N c. Spider band Y d. Topping lift 1400: The half-breadth plan is __________.
N a. an endwise view of the ship's molded form N b. a plan with the forebody to right of centerline and afterbody to the left of centerline N c. a longitudinal side elevation Y d. usually drawn for the port side only 1488: What does the term "end-for-end" refer to in regard to a wire towing hawser?
N a. Cutting off the bitter and towing ends of the wire rope N b. Splicing two wire ropes together Y c. Removing the wire rope from the drum and reversing it so that the towing end becomes the bitter end N d. Removing the wire rope from the drum and turning it over so that the wire bends in the opposite direction when rolled on a drum 1568: A tackle is "two blocked" when the blocks are __________.
N a. equally sharing the load Y b. jammed together N c. as far apart as possible N d. rove to the highest mechanical advantage 1586: By paying out more anchor cable, you __________.
N a. decrease the holding power of your anchor N b. decrease the swing of your vessel while at anchor Y c. increase the holding power of your anchor N d. increase the possibility that your vessel will drag anchor 1752: Your containership has a container displaying a hazardous cargo placard. The placard has the number 2199 on it. This indicates that it is carrying what cargo?
N a. Furan Y b. Phosphine N c. Adiponitrile N d. Xylenol 1830: Using the graph, if the dry bulb temperature is 76°, and the wet bulb temperature is 58°, what is the relative humidity in a cargo hold? (D008DG )
Y a. 35% N b. 47% N c. 61% N d. 76% 1853: A breeches buoy is being rigged from the shore to a stranded vessel. The initial shot line passed to the vessel is normally made fast to a __________.
N a. hawser which is used to pass a tail-block and whip to the vessel N b. hawser with breeches buoy and harness attached N c. hawser which should be made fast to the vessel below the intended location of the tail-block Y d. tail-block and whip which may be used to pass a hawser to the vessel 1869: You are using tackle number 10 in illustration DO29DG to lift a weight of 120 lbs. If you include 10 percent of the weight for each sheave for friction, what is the pull on the hauling part required to lift the weight? (DO29DG )
N a. 57 lbs. N b. 42 lbs. N c. 39 lbs. Y d. 34 lbs. 1935: The knot lettered H in illustration DO30DG is a __________. (DO30DG )
Y a. becket bend N b. bowline N c. plain whipping N d. crown knot 1951: A case received for shipment is marked as shown. The portion of the symbol indicated by the letter A is _______ . (D043DG )
Y a. a stowage sequence marking N b. the consignee's marking N c. a stowage mark, showing the top of the case N d. the symbol for toxic contents 2117: When a vessel is involved in a casualty. The cost of property damage includes the __________.
Y a. cost of labor and material to restore the vessel to the service condition which existed before the casualty N b. loss of revenue while the vessel is being repaired, up to a maximum of $50,000 N c. damage claims awarded to individuals or companies involved in the casualty N d. All of the above 2148: You are the Master of an uninspected diesel towing vessel of 190 GT operating on a regular run from New York to the Gulf of Mexico. Which statement is TRUE?
Y a. All crew members must have Merchant Mariner's Documents. N b. A licensed Chief Engineer is required. N c. Deck watches may be 6 and 6. N d. Able Seamen are not required in the deck crew. 2168: What is the name of tackle number 6? (DO29DG )
N a. Triple purchase N b. Clew garnet tackle N c. Boat falls Y d. Threefold purchase 2203: A Chinese stopper (two lines) will hold best when you __________.
N a. fasten the bitter ends to the mooring line with half hitches Y b. twist the ends together and hold them in the direction of the pull N c. twist the ends together and hold them in the direction opposite to the pull N d. twist the ends together and hold them at right angles to the mooring line 2207: After an explosion, repair of emergency machinery and services should be accomplished __________.
Y a. after control of fire, flooding, and structural repairs N b. immediately, before the emergency is under control N c. after control of fire, but before control of flooding N d. after stability is restored 2249: Which knot should be used to secure a line to a spar when the pull is parallel to the spar? (DO30DG )
N a. G N b. F Y c. P N d. Q 2259: You have determined the maneuvering characteristics of your vessel by taking radar ranges and bearings of an isolated light while making a turn. The results are as shown. Based on this data what is the advance for a turn of 90°? (D035DG )
N a. 490 yards N b. 350 yards Y c. 800 yards N d. 885 yards 2311: In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated FLASH will be delivered within __________.
Y a. 10 minutes if possible N b. 1 to 6 hours N c. 30 minutes to 1 hour N d. 3 hours to start of business the following day 2349: What is the volume of a sphere with a radius of 7 feet?
N a. 11,491.87 cubic ft. Y b. 1,436.76 cubic ft. N c. 963.72 cubic ft. N d. 205.21 cubic ft. 2397: Determine the area of a triangle with a base of 6.7 feet and a height of 9.1 feet.
N a. 61.0 square ft. Y b. 30.5 square ft. N c. 22.9 square ft. N d. 15.8 square ft. 2462: Which term describes a part of a natural fiber line?
N a. Twines Y b. Fibers N c. Lays N d. Lacings 2521: The period of roll is the time difference between __________.
N a. zero inclination to full inclination on one side N b. full inclination on one side to full inclination on the other side Y c. full inclination on one side to the next full inclination on the same side N d. zero inclination to the next zero inclination 2609: Which tanker discharge pattern would be the safest and most efficient?
N a. Empty the forward tanks and start working aft, emptying each tank in sequence Y b. Start discharging with most of the discharge coming from forward, but include some from midships and after tanks N c. Start pumping from forward, midships, and aft with the discharge distributed equally among the tanks N d. Start pumping from midships and then work forward and aft simultaneously as the midships tank is emptied 3180: A license issued by the U.S. Coast Guard for Master of Towing Vessels is valid for __________.
N a. 2 years and must be renewed N b. 3 years and must be renewed Y c. 5 years and must be renewed N d. life and need not be renewed 3325: Flammable liquids should have what kind of label?
N a. Skull and crossbones N b. Yellow Y c. Red N d. White 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 3480: When barge headlogs do not meet or are not even with one another, the void or opening between them is called a __________.
Y a. notch N b. hole N c. spacing N d. gap 3982: Fairleads perform the same function as __________.
N a. deadeyes N b. bollards N c. bitts Y d. chocks 4030: While discharging a cargo, the stripping of the tanks falls behind schedule. This would indicate the __________.
N a. main pumps are working at a high discharge pressure Y b. main pumps are leaving too much oil in the tanks N c. stripping pump is not primed N d. stripping line is cross-connected to the main line 4129: Which lashing materials would be used in securing light vehicles aboard Ro-Ro vessels?
N a. Chain lever or turnbuckle Y b. Webbing N c. Chain N d. None of the above 4209: Pedestal cranes have limit switches to restrict the movement of which function?
N a. Slew travel limits N b. Turntable limits N c. Luff travel limits Y d. All of the above 4210: Pedestal cranes have limit switches to restrict the movement of which function?
N a. Luff rate limits Y b. Slew travel limits N c. Swivel power limits N d. Slew rate limits 4225: What does item "G" refer to in this illustration of a 30-ton pedestal crane? (D045DG )
N a. Mast N b. Pillar Y c. Turntable N d. Pedestal 4257: Which of the following statement(s) is/are TRUE regarding twin pedestal cranes?
N a. A slew drive system provides for rotation of each crane. N b. An independent slew drive system rotates the turntable. N c. Each crane is supplied with luff, hoist, and slew functions for crane load handling. Y d. All of the above