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.
90: You are on a multiple-product chemical tanker. The loading plan includes cargoes of diethylenetriamine and formamide. Which statement concerning the stowage of these cargoes is TRUE?
N a. They must be separated by a void space or empty tank. N b. The cargoes must have individual venting systems. N c. The valves in common piping systems must be chained closed and locked. Y d. The minimum segregation required is a single bulkhead. 100: Which statement is ALWAYS true?
Y a. Keep clear of any line that is under a strain. N b. A line will creak, make snapping sounds, and smoke before it parts. N c. Only synthetic lines will snap back after parting. N d. Stepping on the bight of a line is safer than stepping in the bight of a line. 142: What is NOT an advantage of centrifugal pumps over reciprocating pumps?
N a. They pump more cargo in less time. N b. They are smaller for equivalent pumping ability. N c. They are less expensive. Y d. They require priming for stripping. 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 296: You are on a course of 000°T and put the rudder right 30°. In which direction will the transfer be measured?
N a. 000°T Y b. 090°T N c. 180°T N d. 270°T 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 453: What purpose does a tow hook serve?
Y a. To quickly connect or release the towing hawser N b. To help pick up the towing hawser from the water N c. To prevent the towing hawser from fouling the propeller N d. To recover the towing hawser from a barge 464: The static bollard pull of a tug is measured in tons and consists of the brake horsepower of the tug's engine divided by 100 and multiplied by a factor of __________.
N a. 0.5 Y b. 1.3 N c. 3 N d. 10 531: 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 553: A bridle for an ocean tow consists of __________.
Y a. two chains of equal length N b. a single nylon pendant rove through a heavy ring free to move on the pendant N c. two long legs of wire rope shackled to a fishplate N d. a single length of heavy chain with both ends secured on deck to welded pad eyes 685: Which type of ballast is most commonly used in barges and ships?
Y a. Water N b. Oil N c. Concrete and barite N d. Sand, rock and gravel 686: The effect known as "bank cushion" acts in which of the following ways on a single-screw vessel proceeding along a narrow channel?
Y a. It forces the bow away from the bank. N b. It forces the stern away from the bank. N c. It forces the entire vessel away from the bank. N d. It heels the vessel toward the bank. 740: The extension of the after part of the keel in a single- screw vessel upon which the stern post rests is called the __________.
N a. boss N b. knuckle Y c. skeg N d. strut 741: A vessel has sustained damage in a collision with another vessel. It is necessary to have a Seaworthy Certificate before the vessel sails. Who will issue this certificate?
N a. American Consul Y b. Classification Society N c. Captain of the Port N d. Officer in Charge, Marine Inspection 788: The lower hold of your vessel has a bale capacity of 45,000 cubic feet. How many cases of a cargo weighing 450 lbs. and measuring 2.5 feet by 3 feet by 3 feet could be stowed in the hold, assuming a broken stowage factor of 15 percent?
N a. 300 N b. 675 N c. 1325 Y d. 1700 790: Which statement is TRUE of centrifugal pumps aboard tank vessels?
N a. They are positive displacement pumps. Y b. They are gravity-fed. N c. They produce a pulsating flow. N d. They require more maintenance than a reciprocating pump. 843: If the Master of a US-flag towing vessel replaces any crew member with a non-US citizen, he/she must ensure that the ___________ .
N a. replacement holds a license or document equivalent in experience and training to a mariner holding US credentials N b. replacement can communicate with other crew members to the extent required by regulations N c. vessel is on a foreign voyage, outside US jurisdiction, and not operating above the US outer continental shelf Y d. all of the above 892: On a shallow water tow, the catenary of the towline should be __________.
N a. large Y b. small N c. eliminated N d. adjusted frequently 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 1041: The document on a vessel, annually endorsed by an American Bureau of Shipping surveyor, is called the __________.
N a. Certificate of Inspection N b. Classification Certificate Y c. Load Line Certificate N d. Seaworthy Certificate 1062: An IOPP Certificate on an inspected vessel is valid for what period of time?
N a. 6 months N b. 12 months N c. 18 months Y d. 5 years 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 1125: The pivoting point of a vessel going ahead is __________.
Y a. about one-third of the vessel's length from the bow N b. about two-thirds of the vessel's length from the bow N c. at the hawsepipe N d. near the stern 1242: You are a watchstanding mate and have come to the bridge to relieve the watch while underway at sea. The watch should not be transferred __________.
N a. during an engine speed change Y b. during a navigational course change N c. unless the helm is in the "hand" mode N d. All of the above 1269: What is meant by the term "topping the boom"?
N a. Lowering the boom Y b. Raising the boom N c. Spotting the boom over the deck N d. Swinging the boom athwartships 1436: How many feet are there in 2 shots of anchor chain?
N a. 50 N b. 60 Y c. 180 N d. 360 1452: The helm command "Check her" means __________.
N a. test the steering control N b. read the compass heading N c. stop the swing using hard over rudder Y d. slow the swing using moderate rudder 1477: Under the Carriage of Goods by Sea Act of 1936, a vessel will be liable for damage to a cargo when the damage arises out of __________.
N a. delays due to seizure of the vessel N b. fire caused by fault of the carrier N c. strikes or lockouts Y d. improper stowage 1478: What does "in step" refer to in regards to towing?
N a. The towed vessel follows exactly in the wake of the towing vessel. N b. There is no catenary in the towing hawser. N c. When turning, both the towed and towing vessels turn at the same time. Y d. Both the towed and towing vessels reach a wave crest or trough at the same time. 1484: A metal eye spliced into a wire is called a __________.
N a. cyclops N b. fish eye Y c. thimble N d. chip 1498: The biggest problem you generally encounter while towing a single tow astern is __________.
N a. the catenary dragging on the bottom N b. swamping of the tow N c. the tow tending to dive Y d. yaw 1503: Which knot should be used to send a man over the side when he may have to use both hands?
N a. Bowline Y b. French bowline N c. Bowline on a bight N d. Running bowline 1655: Which knot represents a double blackwall hitch? (DO30DG )
N a. F N b. G Y c. L N d. R 1705: You are to load a consignment of lumber. Each piece measures 3-inches thick, 12-inches wide and 16-feet long. There are 30,000 pieces in the shipment. How many board feet would be listed on the Bill of Lading?
N a. 96,000 N b. 1,200,000 Y c. 1,440,000 N d. 14,400,000 1802: Which picture represents a bowline? (DO30DG )
N a. G N b. H N c. L Y d. Q 1820: If a drill required by regulations is not completed, the Master or person in charge must __________.
N a. report this immediately to the Commandant of the Coast Guard Y b. log the reason for not completing the drill N c. conduct two of the required drills at the next opportunity N d. All of the above 1928: Which towing method maintains the most control over the tow?
N a. Tandem towing N b. Honolulu towing N c. Tandem tug towing Y d. Breasted tug towing 1974: In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated PRIORITY will be delivered within __________.
Y a. 1 to 6 hours N b. 30 minutes to 1 hour N c. 3 hours to start of business the following day N d. 10 minutes if possible 2104: You are proceeding to a distress site where the survivors are in liferafts. Which action will assist in making your vessel more visible to the survivors?
N a. Steering a zigzag course with 5 to 10 minutes on each leg N b. Steering a sinuous course N c. Dumping debris over the side to make a trail to your vessel Y d. Making smoke in daylight 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 2263: You are using tackle number 1 in illustration DO29DG to lift a weight of 100 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. 50 lbs. N b. 55 lbs. N c. 100 lbs. Y d. 110 lbs. 2292: The biggest problem encountered when towing bridle legs are too short is __________.
N a. retrieval N b. adjusting tension Y c. excessive strain N d. hookup to main towline 2388: What is the area of a circle with a diameter of 4 feet after a sector of 120° has been removed?
N a. 2.67 square ft. N b. 4.19 square ft. Y c. 8.38 square ft. N d. 10.67 square ft. 2459: Tripping defects in anchors frequently occur in __________.
N a. deep water N b. shallow water N c. stiff soils Y d. soft soils 2474: Generally speaking, the more destructive storms occurring on the Great Lakes usually come from the __________.
N a. northeast or east Y b. southwest or west N c. northwest or north N d. southeast or south 2952: Spontaneous heating of coal rapidly accelerates at the approximate minimum temperature of __________.
N a. 88°F Y b. 100°F N c. 111°F N d. 119°F 2959: A metal ring on the bottom of a block, to which the standing part of a tackle is spliced, is known as a(n) __________.
Y a. becket N b. loop N c. swivel N d. eye 3091: Towlines should be inspected for chafing where the towline __________.
N a. passes over the stern of the towing vessel N b. passes through chocks N c. is attached to the disabled vessel Y d. All of the above 3400: In a tow made up astern, the fishplate __________.
Y a. connects the hawser to the bridle N b. connects the bridle to the tow N c. keeps the hawser amidships on the tug N d. is the capping piece on the "H" bitt 3449: What term indicates an inward curvature of the ship's hull above the waterline?
N a. Camber Y b. Tumble home N c. Deadrise N d. Flare 3580: You are standing the wheelwatch on entering port and the Master gives you a rudder command which conflicts with a rudder command from the Pilot. What should you do?
Y a. Obey the Master. N b. Obey the Pilot. N c. Bring the rudder to a position midway between the two conflicting orders. N d. Ask the Pilot if he relinquishes control. 3694: Your enrolled vessel is bound from Baltimore, MD, to Norfolk, VA, via Chesapeake Bay. Which statement about the required pilot is TRUE?
N a. The pilot must be licensed by Virginia or Maryland. N b. The Pilot must be licensed by either Virginia or Maryland. N c. The Pilot must be licensed by Virginia, Maryland and the Coast Guard. Y d. The Pilot need only by licensed by the Coast Guard. 3742: It is good practice to use long towlines for ocean tows because the __________.
N a. wear on the towline is equalized N b. weight of the towline increases the towing force Y c. dip in the towline absorbs shock loads N d. danger of overriding is reduced 4034: The signal man assisting the crane operator has his arm extended downwards, forefinger pointing down, and moves his hand in small horizontal circles. This is the signal to __________.
Y a. lower N b. swing N c. hoist N d. extend 4067: When steering a vessel, a good helmsman does NOT __________.
N a. use as little rudder as possible to maintain course N b. advise his relief of the course being steered N c. consider steering a vessel a highly responsible job Y d. use as much rudder as possible to maintain course 4133: What is used when securing light vehicles aboard Ro-Ro vessels?
N a. Chain lever or turnbuckle N b. Chain N c. Wire Y d. None of these 4183: Which of the following lashing gear used aboard Ro-Ro vessels should be maintained when not in use?
N a. Chain N b. Wire rope N c. Webbing Y d. All of the above 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 4214: What does a jib refer to on a crane?
Y a. Boom N b. Topping lift N c. Control cab N d. Slewing control 4261: Who should be notified prior to starting up a crane?
N a. The pumpman N b. The stevedore foreman Y c. The engine room N d. All the above