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.
26: The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is __________.
N a. right at the bow Y b. one-third the length of the vessel from the bow N c. one-half the length of the vessel from the bow N d. two-thirds the length of the vessel from the bow 47: You are proceeding under NCS (Naval Control of Shipping) and wish to send a message warning of a hurricane. Which precedence would you assign this message?
Y a. O (IMMEDIATE) N b. P (PRIORITY) N c. R (ROUTINE) N d. Z (FLASH) 109: What is meant by "thieving" a petroleum cargo?
N a. Adjusting the cargo figures to coincide with the draft Y b. Determining the amount of water (if any) in each cargo tank N c. Reducing the gross cargo calculations to net amounts N d. Siphoning off a few barrels of petroleum for shipboard use 120: You are on a multiple-product tankship and scheduled to load a cargo classed as an aromatic amine. This cargo is incompatible with cargoes classed as __________.
Y a. organic anhydrides N b. ketones N c. phenols N d. esters 140: Your tankship is carrying a 30% solution of hydrogen peroxide. The cargo containment system must have a permanent inert gas system. While discharging this cargo the inert gas system must maintain a minimum pressure of __________.
Y a. 0.5 psig N b. 3.0 psig N c. 5.0 psig N d. atmospheric pressure 225: For safety reasons, when assistance towing __________.
N a. the disabled vessel should be towed to the nearest port N b. the disabled vessel should be inspected for flammable gases N c. passengers should always be removed from the disabled vessel Y d. personnel on the disabled vessel should don PFD's 252: 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. Y b. Pyridine and diisopropylamine may not be carried in tanks having a common header vent. N c. Pyridine must be separated from carbon disulfide by two barriers (cofferdams, voids, empty tanks, etc.). N d. A tank of diisopropylamine may be used to separate a tank of pyridine from a tank of carbon disulfide. 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) 420: In handling break bulk hazardous materials, it is forbidden to use __________.
N a. cargo nets Y b. metal bale hooks N c. pallets N d. slings 533: A towing hook may be released from the __________.
N a. tug's engineroom or the bow Y b. pilot house or aft steering station N c. forecastle N d. towing bitts by reaching over and releasing a lever 535: In illustration D044DG, the mooring line labeled "G" is called a(n) __________. (DO44DG )
N a. offshore bow line Y b. inshore bow line N c. forward breast line N d. forward spring line 735: A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a __________.
N a. main brace Y b. tow span N c. jockey bar N d. None of the above 838: You are going to load bales of wool having a stowage factor of 110 in #3 lower hold which has a bale cubic of 72,000. If broken stowage is figured at 15%, how many tons of the wool can be stowed?
Y a. 556 N b. 654 N c. 752 N d. 770 939: What is the purpose of pressure-vacuum relief valves?
N a. Regulation of discharge pressure from cargo pumps N b. Maintaining constant velocity in cargo lines N c. Regulation of suction head on cargo pumps Y d. To maintain a tank or void at atmospheric pressure 942: The damage to a vessel is over $25,000. Who must notify the nearest Coast Guard Marine Safety or Marine Inspection Office as soon as possible?
Y a. The Master of the vessel N b. The Radio Officer N c. The Chief Officer N d. All of the above 975: The "Mode" selector switch on the autopilot steering stand is used to select any of the following with the EXCEPTION of __________.
N a. automatic pilot steering N b. hand-electric steering N c. non-followup steering Y d. rudder adjustment 982: The muster list must be posted in conspicuous locations and signed by the __________.
N a. safety officer N b. Coast Guard Officer approving the bill N c. owner Y d. Master 1010: When the longitudinal strength members of a vessel are continuous and closely spaced, the vessel is __________.
N a. transversely framed Y b. longitudinally framed N c. intermittently framed N d. web framed 1089: The system of valves and cargo lines in the bottom piping network of a tank vessel that connects one section of cargo tanks to another section is called a __________.
Y a. crossover N b. runaround N c. come-along N d. manifold 1108: In which casualty case is it UNNECESSARY to notify the local Coast Guard Marine Safety Office?
N a. A seaman is injured and in the hospital for four days. N b. Nylon mooring line parts while the vessel is tied up and kills a harbor worker who was on the pier. N c. Your vessel is backing from a dock and runs aground, but is pulled off by tugs in 30 minutes. Y d. Your vessel strikes a pier and does $1,500 damage to the pier but none to the vessel. 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 1189: When bunkering is complete, the hoses should be __________.
N a. cleaned internally with a degreaser N b. washed out with hot soapy water Y c. drained, blanked off, and stored securely N d. stowed vertically and allowed to drain 1492: Which of the pictures in illustration DO30DG represents a fisherman's bend? (DO30DG )
N a. F Y b. G N c. K N d. L 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 1537: Which is NOT a potential hazard of approaching close to an iceberg?
Y a. The brash ice in the vicinity may clog sea intakes. N b. The berg may calve with the bergy bit hitting the vessel. N c. There may be underwater rams extending out from the berg. N d. The berg may suddenly tilt or capsize due to uneven melting and hit the vessel. 1605: The pivoting point of a vessel going ahead is __________.
N a. near the stern N b. about two-thirds of the vessel's length from the bow N c. at the hawsepipe Y d. about one-third of the vessel's length from the bow 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 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 1655: Which knot represents a double blackwall hitch? (DO30DG )
N a. F N b. G Y c. L N d. R 1664: A method used to make an eye in a bight of line where it cannot be spliced is known as __________.
N a. braiding N b. plaiting Y c. seizing N d. serving 1664: A method used to make an eye in a bight of line where it cannot be spliced is known as __________.
N a. braiding N b. plaiting Y c. seizing N d. serving 1870: The knot lettered S is a __________. (DO30DG )
N a. bowline Y b. blackwall hitch N c. half hitch N d. hook hitch 1938: Towing a structure using two tugs approximately side by side, each using one hawser, is referred to as a __________.
N a. tandem tow N b. Honolulu tow Y c. breasted tug tow N d. tandem tug tow 2061: A sheave is a __________.
Y a. grooved wheel in a block N b. line to hold a lifeboat next to the embarkation deck N c. partial load of grain N d. seaman's knife 2068: You intend to tow a barge with one tug and expect continuous high winds from the north. To reduce the yaw of your tow, you should __________.
N a. reduce the draft of the barge Y b. shorten one leg of the bridle N c. place bulky deck loads as far aft as possible N d. trim the barge down by the bow 2076: A person who sees someone fall overboard should __________.
N a. immediately jump in the water to assist the individual N b. go to the bridge for the distress flares N c. run to the radio room to send an emergency message Y d. call for help and keep the individual in sight 2121: Which statement concerning the lashings of containers with solid bar or wire rope lashings is TRUE?
Y a. Stack weights should be less when using a solid bar lashing as compared to a wire lashing. N b. Stack heights may be increased when using a solid bar lashing. N c. Stack heights should be reduced when using a solid bar lashing. N d. Solid bars should be used for lashing the first tier only, with wire lashings on the higher tier(s). 2195: You have determined the maneuvering characteristics of your vessel by taking the radar ranges and bearings of an isolated light while making a turn. The results are as listed. Based on this data what is the transfer for a turn of 180°? (D035DG )
N a. 745 yards N b. 770 yards Y c. 840 yards N d. 890 yards 2213: You are using tackle number 6 to lift a weight. The hauling part of this tackle is bent to the weight hook (w) of tackle number 8. Disregarding friction, what is the mechanical advantage of this rig? (DO29DG )
N a. 11 N b. 16 Y c. 18 N d. 24 2226: The knot lettered O is a __________. (DO30DG )
N a. timber hitch Y b. barrel hitch N c. carrick bend N d. blackwall hitch 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 2288: What will cause wire rope to fail?
N a. Operating the winch too fast N b. Using a sheave 9 times the wire's diameter N c. Kinking Y d. All of the above 2493: Your U.S. tankship is designed to carry anhydrous ammonia in bulk. The keel was laid in 1980. Which statement concerning the carriage of this cargo is TRUE?
N a. A flammable gas detection system must be installed in each cargo pump room. N b. Tanks may not be located "on deck". N c. Carriage of this cargo is authorized by issuance of an IMO Certificate. Y d. Aluminum and copper alloys are prohibited from being in valve parts in contact with the cargo. 2509: What is the purpose of cant frames in steel vessels?
N a. To support the overhang of the stern Y b. To provide strength to shell plating at the stern N c. To add strength to the deck beams which support the weather decks N d. To support the plating of a cylindrical tank 2619: On the Great Lakes, the term "controlling depth" means the __________.
N a. designed dredging depth of a channel constructed by the Corps. of Engineers N b. minimum amount of tail water available behind a dam N c. distance in units of the chart (feet, meters or fathoms) from the reference datum to the bottom Y d. least depth within the limits of the channel which restricts the navigation 2636: When riveted joints occur at the ends of plating they are called __________.
N a. trailers N b. terminals N c. seams Y d. butts 2639: A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from __________.
Y a. filling completely N b. developing free surface N c. developing free surface moment N d. collapsing 2789: Your vessel is approaching the International Bridge on the St. Marys River. If the gage on the bridge, read from top to bottom, indicates 124 ft. and the IGLD (1955) is 600 ft., determine the actual vertical clearances between the existing water level and the lowest point of the bridge over the channel.
Y a. 124 feet N b. 476 feet N c. 724 feet N d. 840 feet 2814: Your vessel is crossing a river on the Great Lakes System. A power-driven vessel is ascending the river, crossing your course from port to starboard. Which statement is TRUE?
Y a. The vessel ascending the river has the right of way. N b. Your vessel has the right of way, but you are directed not to impede the other vessel. N c. The other vessel must hold as necessary to allow you to pass. N d. You are required to propose the manner of passage. 2816: Which statement is TRUE concerning lighting requirements for Great Lakes vessels?
N a. The showing of a forward masthead light is optional for vessels under 150 meters. Y b. An all-round white light may be carried in lieu of the second masthead light and stern light. N c. Sidelights for vessels over 50 meters are required to have only a two-mile range of visibility. N d. Great Lakes vessels are exempted from the requirement to show yellow towing lights. 2921: The process of lowering a boom to a horizontal position and onto its deck support is called __________.
N a. spotting a boom N b. collaring a boom Y c. cradling a boom N d. toppling a boom 3017: Which situation requires you to furnish a notice of marine casualty to the Coast Guard?
N a. Storm damage to the cargo winch motors requires repairs costing $19,000. Y b. Your vessel is at anchor and grounds at low tide with no apparent damage. N c. You collide with a buoy and drag it off station with no apparent damage to the vessel or the buoy. N d. A seaman slips on ice on deck and sprains his ankle, requiring an ace bandage. 3074: In securing a towing cable, consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by __________.
N a. increasing the shaft RPM prior to release N b. using a pelican hook for quick release Y c. using preventers N d. using a short chain for the lead through the stern chock 3075: You are proceeding under NCS (Naval Control of Shipping) when you wish to send a message concerning your ships diversion. Which precedence would you assign this message?
N a. O (IMMEDIATE) Y b. P (PRIORITY) N c. R (ROUTINE) N d. Z (FLASH) 3140: If the Certificate of Inspection of a damaged tank barge has expired, which certificate may be issued to allow its movement to a repair facility?
N a. Change of employment Y b. Permit to proceed N c. Application for inspection N d. Temporary Certificate of Inspection 3269: What provides little or no indication that a vessel is dragging anchor?
Y a. Changing range to an object abeam N b. Drift lead with the line tending forward N c. The cable alternates between slack and heavy tension N d. Changing bearing to a fixed distant object abeam 3270: A vessel is tide rode when it is __________.
N a. carrying extra rudder to compensate for the current N b. necessary to adjust the course steered to allow for the current Y c. at anchor and stemming the current N d. being forced off of a pier by the hydraulic effect of the current 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 4181: Which lashing gear used aboard Ro-Ro vessels should be painted or soaked in oil when not in use?
N a. Wire rope. Y b. Chain N c. Webbing N d. All of the above 4206: Which piece(s) of equipment is/are required to "twin-up" 30-ton pedestal cranes aboard a crane vessel?
Y a. Equalizing beam N b. Portable power swivel N c. 20-foot container spreader N d. All of the above