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% 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. 178: Which can be prevented only by segregating two lots of cargo into separate holds?
N a. Contamination of dry cargo by a wet cargo N b. Contamination of a clean cargo by a dirty cargo Y c. Contamination of a food cargo by an odorous cargo N d. Overcarriage, overstowage, and short landing 234: The helm command "shift your rudder" means __________.
N a. double your rudder angle or go to full rudder N b. bring your rudder amidships Y c. change from right rudder to left rudder, or vice versa, an equal number of degrees N d. check the swing of the vessel 410: You are loading a cargo tank on your container ship. The tank displays the red label shown. Which statement is TRUE? (D023DG )
Y a. The tank contains propylene. N b. The tank's volume is 1077 cubic feet. N c. There are three tanks in the shipment. N d. The tank contains an oxidizing material. 423: When securing a synthetic line to a bitt what is the minimum number of round turns you should take before figure-eighting the line?
N a. None N b. 1 Y c. 2 N d. 3 678: Prior to being able to sail, each vessel that carries grain in bulk must have a certificate of loading issued by the __________.
N a. American Bureau of Shipping N b. Lloyds of London Y c. National Cargo Bureau N d. U.S. Salvage 717: It is the responsibility of the Master to ensure that __________.
N a. the muster list is posted in each compartment Y b. temporary personnel and visitors are advised of emergency stations N c. names of crew members are listed on the muster list N d. no changes are made to the muster list 726: A common occurrence when a vessel is running into shallow water is that __________.
N a. the wake is less pronounced N b. the vessel is more responsive to the rudder Y c. "squat" will cause a decrease in bottom clearance and an increase in draft N d. All of the above 754: Which method is used to detect rot in manila lines?
N a. Feeling the surface of the line for broken fibers N b. Measuring the reduction in circumference of the line N c. Observing for the appearance of mildew on the outer surface Y d. Opening the strands and examining the inner fibers 775: You are on a large merchant vessel entering a U.S. port. There is a Pilot onboard and he has the conn. Which statement is TRUE?
N a. The Pilot becomes solely responsible for the safe navigation of the vessel only if the Master relinquishes the conn. N b. The Pilot is solely responsible for the internal working of the ship. N c. The Pilot is solely responsible for the safe maneuvering of the ship only if he is required to be on board by law. Y d. The Master is responsible for the safe navigation of the ship and the Pilot is employed for his local knowledge. 796: When you enter shallow water, you would expect your rudder response to __________.
Y a. be sluggish and your speed to decrease N b. be sluggish and your speed to increase N c. improve and your speed to decrease N d. improve and your speed to increase 830: On which vessels are the officers and deck crew allowed to operate under a two-watch system on voyages of less than 600 miles?
N a. Towing vessels N b. Offshore supply vessels N c. Barges, when manned Y d. All of the above 852: How can the Coast Guard determine that a crew member is "able to understand any order spoken by the officers"?
Y a. Require a demonstration by the officer and the crew member N b. Require a written test N c. Require that an interpreter be provided N d. All of the above 869: To ensure proper seating when closing a valve on a tank, the valve should be __________.
N a. set up as tight as possible by hand N b. set up tight using a valve wrench Y c. closed, opened a half turn, and then closed N d. closed against the stop and the locking pin inserted 959: A relief valve for a cargo pump is generally installed __________.
N a. after the discharge valve Y b. between the pump and discharge valve N c. after the suction valve N d. between the pump and suction valve 990: Freeboard is measured from the upper edge of the __________.
N a. bulwark Y b. deck line N c. gunwale bar N d. sheer strake 1037: After an IOPP Certificate is issued to an inspected vessel, how many other surveys of the vessel's pollution prevention equipment are conducted during the period of validity of the certificate?
N a. None N b. One N c. Two Y d. Three 1206: You are landing a single-screw vessel with a left-handed propeller, starboard side to the dock. As you approach the dock you back your engine with your rudder amidships. You would expect the vessel to __________.
N a. lose headway without swinging N b. turn its bow towards the dock Y c. turn its stern towards the dock N d. drift away from the dock 1217: The proper way to correct a mistake in the logbook is to __________.
N a. erase the entry and rewrite Y b. draw a line through the entry, rewrite, and initial the correction N c. draw several lines through the entry, rewrite, and initial the correction N d. completely black out the entry, rewrite, and initial the correction 1238: A contract of affreightment is a __________.
Y a. Bill of Lading N b. Bottomry Bond N c. manifest N d. Portage Bill 1250: The floors in a vessel's hull structure are kept from tripping, or folding over, by __________.
N a. face plates Y b. bottom longitudinals N c. longitudinal deck beams N d. transverse deck beams 1256: You are docking an oceangoing single-screw vessel under normal circumstances with a single tug. The tug is usually used to __________.
Y a. control the bow and is tied to the offshore bow N b. control the stern and is tied to the stern on the offshore side N c. pull the vessel into the slip and is tied to the bow N d. push the ship bodily alongside and is tied to the offshore side amidships 1338: A "dangerous cargo manifest" is needed for you to carry a combustible cargo. You should obtain the shipping papers to make this "manifest" from the __________.
N a. manufacturer N b. ABS N c. Coast Guard Y d. shipper 1340: The usual depth of a beam bracket is __________.
Y a. 2 1/2 times the depth of the beam N b. 5 times the depth of the beam N c. 10 times the depth of the beam N d. same depth as the beam 1446: The marking on an anchor chain for 30 fathoms is __________.
Y a. two links on each side of the 30 fathom detachable link are painted white N b. one link on each side of the 30 fathom detachable link is painted white N c. three links on each side of the 30 fathom detachable link are painted white N d. only the detachable link is painted red 1468: What will NOT reduce yawing of a tow?
N a. Increasing the length of the towing hawser N b. Trimming the tow by the stern Y c. Stowing deck loads forward N d. Drogues put over the stern 1565: While in dry dock your vessel will be belt-gauged. This process involves __________.
N a. measuring the thickness of the tail shaft liner N b. taking the vessel's offsets to check for hull deformation N c. testing and examining the anchor cables for defective links Y d. drilling or sonic-testing the hull to determine the plate thickness 1633: The strongest way to join the ends of two ropes is with a __________.
N a. back splice Y b. short splice N c. square knot N d. carrick bend 1822: What is the principal danger in attempting to swing a barge on a hawser in order to slow the barge's speed?
N a. Dangerous wakes may result from the swinging barge and capsize the tug. N b. The barge may swing too quickly and run over the tug. N c. Free surface effect of liquid inside the barge may rupture the barge bulkheads if the turn is too quick. Y d. The barge may pass under the hawser and capsize the tug. 1823: Chafing gear __________.
N a. reduces and prevents corrosion of standing rigging N b. prevents corrosion of running rigging Y c. reduces and prevents wear caused by the rubbing of one object against another N d. protects the body against extreme cold 1872: In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated FLASH will be delivered within __________.
N a. 3 hours to start of business the following day N b. 1 to 6 hours N c. 30 minutes to 1 hour Y d. less than 10 minutes 1875: A seam is indicated by which letter in illustration D033DG? (D033DG )
Y a. E N b. H N c. L N d. M 1930: The holding capabilities of an anchor are determined PRIMARILY by the __________.
N a. design of the anchor N b. weight of the anchor Y c. scope of the anchor chain N d. size of the vessel 1991: Using the graph shown, if the dry bulb temperature is 91°, and the wet bulb temperature is 87°, what is the relative humidity in a cargo hold? (D008DG )
N a. 79% Y b. 85% N c. 91% N d. 98% 2031: Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color?
N a. Greenish Y b. Bluish N c. Grey N d. Grey-white 2037: You are riding to a single anchor. The vessel is yawing excessively. Which action should be taken to reduce the yawing?
N a. Veer chain to the riding anchor N b. Heave to a shorter scope of chain on the riding anchor N c. Drop the second anchor at the extreme end of the yaw and veer the riding anchor Y d. Drop the second anchor at the extreme end of the yaw, then adjust the cables until the scope is equal 2050: In illustration D044DG, the mooring line labeled "H" is called a(n) __________. (DO44DG )
N a. forward breast line N b. offshore spring line N c. onshore bow line Y d. offshore bow line 2058: What is NOT suitable for use in making up the towing rig for a heavy, long ocean tow?
N a. Chain Y b. Ring N c. Solid thimble N d. A fishplate 2113: One major advantage of the round turn maneuver in a man overboard situation is that it __________.
Y a. is the fastest method N b. is easy for a single-screw vessel to perform N c. requires the least shiphandling skills to perform N d. can be used in reduced visibility 2164: What provides the majority of strength to an aluminum-sided container?
N a. Corner fittings Y b. Framework, primarily the corner posts N c. Framework and siding acting as a girder N d. Aluminum side and end panels 2491: Before being certified by the American Bureau of Shipping, anchor chain must undergo __________.
N a. USCG inspection Y b. a breaking test N c. x-ray inspection N d. spectroanalysis 2710: You have orders to load cargoes of carbon disulfide, diisopropylamine and pyridine on your multi-product tankship. Which statement is TRUE?
N a. Carbon disulfide may be carried in NOS. 1 and 2 center tanks and diisopropylamine in NOS. 1 and 2 wing tanks. N b. Pyridine and diisopropylamine may be carried in tanks having a common header vent. Y c. Diisopropylamine must be separated from carbon disulfide by two barriers (cofferdams, voids, empty tanks, etc.) N d. A tank of carbon disulfide may be used to separate a tank of pyridine from a tank of diisopropylamine. 2738: Assume that your vessel has just entered Lake Michigan via the Straits of Mackinac and is proceeding south to Chicago. Which statement is TRUE with respect to the aids to navigation you will encounter along this route?
N a. Aids to navigation are serviced jointly by the U.S. and Canadian Coast Guard. Y b. Red buoys should be passed down your starboard side. N c. Green buoys mark the location of wrecks or obstructions which must be passed by keeping the buoy on the right hand. N d. All solid colored buoys are numbered, the red buoys bearing odd numbers and green buoys bearing even numbers. 2759: Which of the Great Lakes is most affected by short-term Lake level fluctuations?
N a. Lake Superior N b. Lake Michigan N c. Lake Huron Y d. Lake Erie 2785: You are proceeding under NCS (Naval Control of Shipping) and wish to send a message by rapid transmission which does not require a higher precedence. Which precedence would you assign this message?
N a. P (PRIORITY) Y b. R (ROUTINE) N c. O (IMMEDIATE) N d. Z (FLASH) 2862: What is used to prevent accidental flooding of a double bottom or peak tanks in the event of a pipe rupture due to collision?
N a. Separate lines are provided for filling and pumping these tanks. N b. Pipe lines must run vertically from the tank to a point above the margin line before turning fore or aft towards the pump. N c. All tanks must be served by the fewest possible number of pipes to reduce the possibility of rupture. Y d. Suction lines are fitted with a non-return valve 3014: You are lifting a 3 ton weight with a single whip rove on a swinging boom set at an angle of 60° to the horizontal. Use the formula for the size of a shackle with a safe working load and determine the minimum size shackle that should be used to secure the head block to the boom.
N a. 1 1/8 inch Y b. 1 1/2 inch N c. 1 3/4 inch N d. 2 inch 3086: Which statement concerning the navigation of a vessel in ice is FALSE?
N a. Anchoring in the presence of ice is not recommended except in an emergency. N b. Towing a vessel through an ice field is not recommended except in an emergency. N c. The "Free and Proceed" system of escorting a beset vessel cuts down on the number of freeing operations. Y d. When anchoring in ice, it is advisable to increase the scope of the chain over what is normally used for non-icing conditions. 3110: The number or name of a tank barge shall be __________.
N a. displayed in at least 4 different positions on the barge N b. carved on a wooden board and attached to the barge's hull N c. displayed as close to the navigation lights as possible Y d. displayed at the highest point of the barge's hull such that it can be seen from either side 3171: A high cube container would most likely be used to stow __________.
N a. dense bulk cargoes Y b. household appliances N c. fragile cargoes N d. heavy industrial machinery 3288: The angular movement of a vessel about a horizontal line drawn from its bow to its stern is __________.
N a. pitching Y b. rolling N c. heaving N d. swaying 3347: The opening in the deck beneath the anchor windlass that leads to the chain locker is the __________.
N a. hawsepipe N b. fallpipe N c. drop-pipe Y d. spill pipe 3654: Horizontal transverse motion of a vessel is known as __________.
N a. pitch N b. surge Y c. sway N d. heave 4044: You are arriving in port and are assigned to anchor in anchorage circle B-4. It has a diameter of 500 yards and your vessel's LOA is 484 feet. If you anchor in 8 fathoms at the center of the circle, what is the maximum number of shots of chain you can use and still remain in the circle?
N a. 6 shots N b. 5 shots N c. 4 shots Y d. 3 shots 4090: The BEST holding ground for conventional anchors is_____.
N a. very soft mud Y b. hard mud N c. shale N d. rock 4207: Which piece of equipment is required to "twin-up" 30-ton pedestal cranes aboard a crane vessel?
N a. Portable power swivel N b. 20-foot container spreader N c. 40-foot container spreader Y d. None of the above 4231: The 30 ton capacity pedestal cranes shown in the illustration can lift a maximum weight of how many tons in the single mode? (D047DG )
N a. 15 tons Y b. 30 tons N c. 60 tons N d. 120 tons 4282: Which statement is TRUE concerning a tagline as used with a 30-ton pedestal crane?
N a. Taglines are wire rope purchases that raise and lower the jib. N b. Taglines can be fastened to the corners of the jib when lifting containers. Y c. The crane might not have taglines installed in its rigging system. N d. The taglines are wire rope purchases that raise and lower the topping lift. 4390: When a helmsman receives the command "Right 15 degrees rudder," the helmsman's immediate reply should be __________.
N a. "Rudder is right 15 degrees" N b. "Aye Aye Sir" N c. No reply is necessary, just carry out the order Y d. "Right 15 degrees rudder"