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.
70: You are on a tankship designed to carry molten sulfur. Which statement is TRUE?
N a. There must be two portable toxic vapor detectors on board. N b. The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volume. Y c. Cargo temperature may be taken by portable thermometers. N d. The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them. 146: When turning a ship in restricted space with a strong wind, it is normally best to __________.
N a. go ahead on both engines with the rudder hard to one side, if on a twin-screw vessel N b. back down with the rudder hard to one side, if on a single-screw vessel N c. take advantage of the tendency to back to port, if on a twin-screw vessel Y d. turn so that the tendency to back into the wind can be used, if on a single-screw vessel 276: As a ship moves through the water, it causes a wake, which is also moving forward relative to the sea. In addition to a fore and aft motion, this wake also has a(n) __________.
N a. downward and inward flow N b. downward and outward flow Y c. upward and inward flow N d. upward and outward flow 295: Which publication offers information on Great Lakes ice services?
N a. Light List volume VII Y b. U.S. Coast Pilot #6 N c. Marine Weather Log N d. National Weather Service, Ice Outlooks 380: The (auto)ignition temperature is that temperature at which_______.
Y a. no spark or flame is required to ignite gas or vapor N b. a fuel begins to give off explosive vapors N c. a fuel if ignited will continue to burn N d. a 1% mixture of the fuel with air will explode 408: What is the meaning of the term tare weight?
N a. Pounds of force necessary to damage a container N b. Total weight of a container and contents Y c. Weight of a container N d. Weight of the contents of a container 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% 545: Repairing damage to the hull at or above the waterline reduces the threat of __________.
N a. free surface effects N b. capsizing Y c. continued progressive flooding N d. wind heel 559: A vessel loads edible oil in a deep tank through a manhole at the mid-length of the tank. In order to fill the tank to maximum capacity, what trim should the vessel have?
N a. Down by the bow N b. Down by the stern N c. Down by either the bow or stern Y d. In level trim 560: You are loading a cargo that includes cylinders of acetylene aboard your break bulk vessel. Which statement is true?
Y a. The cylinders must be stowed at least 10 horizontal feet from corrosive materials in the same space. N b. Stowage in the upper deck-deck is considered to be the equivalent of "on deck" stowage for this cargo. N c. The cylinders must have a red label for flammability and a green label for compressed gas. N d. The cylinders may be protected from the radiant heat of the Sun by laying a tarp on them. 576: In twin-screw engine installations while going ahead, maneuvering qualities are most effective when the tops of the propeller blades both turn __________.
N a. to starboard Y b. outboard from the center N c. to port N d. inboard toward the center 637: A tow bridle is attached to the main tow hawser at the __________.
N a. bight ring N b. tow hook Y c. fishplate N d. swivel 655: Good seamanship while towing in heavy weather requires all of the following EXCEPT __________.
N a. reducing speed to reduce surging on the towline N b. lashing down or stowing all loose gear N c. dogging all hatches and watertight doors Y d. streaming all of your towing hawser 694: An advantage of nylon rope over manila rope is that nylon rope __________.
N a. can be used in conjunction with wire or spring-lay rope N b. can be stored on decks exposed to sunlight Y c. can hold a load even when a considerable amount of the yarns have been abraded N d. gives audible warning of overstress whereas manila does not 714: Using a safety factor of 6, determine the safe working load of manila line with a breaking stress of 8 tons.
N a. 0.75 tons N b. 1.25 tons Y c. 1.33 tons N d. 8.00 tons 721: The mooring line labeled "F" is called a __________. (DO44DG )
N a. bow line N b. forward spring line Y c. breast line N d. None of the above 734: What is the computed breaking strength of a 4-inch manila line?
N a. 5,280 lbs. N b. 7,700 lbs. N c. 12,200 lbs. Y d. 14,400 lbs. 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 950: The upward slope of a ships bottom from the keel to the bilge is known as __________.
N a. camber N b. slope Y c. deadrise N d. keel height 951: The responsibility for maintaining the Official Logbook on voyages between the Atlantic and Pacific coasts of the United States rests with the __________.
N a. Chief Mate of the vessel Y b. Master of the vessel N c. Deck Officer of the watch at the time of the occurrence N d. Purser of the vessel 1184: A new coil of nylon line should be opened by __________.
N a. pulling the end up through the eye of the coil N b. uncoiling from the outside with the coil standing on end N c. taking a strain on both ends Y d. unreeling from a spool 1459: When handling cargo, the majority of cargo gear breakdowns is due to __________.
N a. compression bending of the boom N b. extension failure of the boom Y c. guy failures N d. topping lift failures 1474: To find the distance the strands should be unlaid for an eye splice, multiply the diameter of the wire in inches by __________.
N a. 12 N b. 24 Y c. 36 N d. 48 1551: A majority of the crew requests a survey from the American Consul to determine a vessel's seaworthiness. The vessel is found unfit to continue her intended voyage. The Consul allows the vessel to sail to another port where deficiencies can be corrected. The crew must __________.
N a. be discharged and given first class passage back to the original port of signing on in lieu of one month's wages N b. be discharged by the American Consul with additional one month's wages until repairs are made N c. be furnished employment on another vessel returning to the United States which is satisfactory to that crew Y d. comply with the judgment 1567: The mooring line shown as "A" is called a(n) __________. (DO44DG )
N a. after breast line N b. after spring line N c. onshore stern line Y d. offshore stern line 1594: What is the breaking strain of steel wire rope with a 5/8" diameter?
N a. 1.0 tons N b. 6.6 tons Y c. 9.6 tons N d. 15.6 tons 1680: In vessel construction, the garboard strake is __________.
Y a. located next to and parallel to the keel N b. located next to and parallel to the gunwale N c. another term for the bilge keel N d. another term for the rub rail 1731: You are in charge of a 225-gross ton tug preparing to depart from Houston, Texas, with a loaded 2500-gross ton tank barge bound for New York. Prior to departure, regulations require that you __________.
N a. record the status of all firefighting equipment Y b. record the barge's load line and draft readings N c. record the condition of the towing gear N d. have on board an Official Logbook in lieu of other forms of records 1758: As operator of a 199 GT towing vessel sailing foreign, it shall be your duty to enter in the Official Logbook or other permanent record __________.
N a. all information contained on the barge's Certificate of Inspection N b. the condition of all towing gear to be used N c. all navigational aids to be used Y d. the barges load line and draft readings 1764: The "square knot" is used for __________.
N a. forming temporary eyes in lines Y b. joining two lines of equal size N c. keeping line from unlaying or fraying N d. joining two lines of different size 1788: Which position shown is the most dangerous when tying up? (D019DG )
Y a. I N b. II N c. III N d. IV 1788: Which position shown is the most dangerous when tying up? (D019DG )
Y a. I N b. II N c. III N d. IV 1814: In illustration D044DG, the mooring line labeled "D" is called a(n) __________. (DO44DG )
N a. stern line N b. forward spring line N c. waist breast line Y d. after spring line 1880: You are using tackle number 11 in illustration DO29DG to lift a weight of 300 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 )
Y a. 75 lbs. N b. 90 lbs. N c. 110 lbs. N d. 117 lbs. 1959: A vessel is involved in a casualty. The cost of property damage includes the __________.
N a. damage claims awarded to individuals or companies involved in the casualty, up to a maximum of $50,000 N b. loss of revenue while the vessel is being repaired, up to a maximum of $50,000 Y c. cost of labor and material to restore the vessel to the service condition which existed before the casualty N d. All of the above 1962: The maximum draft to which a vessel can legally be submerged is indicated by the __________.
Y a. load line mark N b. Certificate of Inspection N c. Muster List ("Station Bill") N d. tonnage mark 2196: You are using tackle number 10 to lift a weight. The hauling part of this tackle is bent to the weight hook (w) of tackle number 4. What is the mechanical advantage of this rig? (DO29DG )
N a. 24 Y b. 20 N c. 13 N d. 9 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 2346: What is the volume of a sphere with a radius of 11 feet?
N a. 506.75 cubic ft. N b. 696.78 cubic ft. Y c. 5,575.28 cubic ft. N d. 44,593.82 cubic ft. 2353: Which mooring line prevents sideways motion of a vessel moored to a pier?
N a. A line led forward from the bow N b. A line led aft from the bow N c. A line led in the same direction as the keel Y d. A line led at a right angle to the keel 2461: In writing up the logbook at the end of your watch, you make an error in writing an entry. What is the proper way of correcting this error?
N a. Carefully and neatly erase the entry and rewrite it correctly. Y b. Cross out the error with a single line, write the correct entry, and initial it. N c. Blot out the error completely and rewrite the entry correctly. N d. Remove this page of the log book and rewrite all entries on a clean page. 2471: To determine the number of able seamen required on an inspected vessel, you should check the __________.
N a. Load Line Certificate N b. operations manual N c. Safety of Life at Sea Certificate Y d. Certificate of Inspection 2512: Ultrasonic testing is used to determine the thickness of a vessel's shell plating and to __________.
N a. provide tail shaft clearances Y b. test welds for subsurface defects N c. check the wear of the rudder carrier bearing N d. test the links of the anchor cables while being ranged 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 2554: The welds used to attach stiffeners to a plate are known as __________.
N a. butt welds N b. seam welds Y c. fillet welds N d. plate welds 2595: Yawing can be described as __________.
N a. jumping on the towline as the tow pitches N b. jumping on the towline as the tow slams into waves Y c. veering from side to side on the end of the towline N d. corkscrew motion of the tow due to wave action 2608: Most very large ocean going vessels, such as bulk carriers and large tankers, tend to squat __________.
Y a. by the bow N b. by the stern N c. at the end nearest the bottom N d. evenly fore and aft 2659: The shearing stresses on a ship's structure are usually greatest at __________.
N a. the bow N b. the stern N c. midships Y d. the ship's quarter-length points 3122: When a tug is "in irons", she __________.
N a. is made fast to the dock with engines secured N b. is in dry dock Y c. may be in danger of being overrun by her tow N d. should pay out more towline 3463: Deckhands onboard towing vessels shall be divided into 3 watches when the trip exceeds __________.
N a. 1000 miles N b. 800 miles N c. 700 miles Y d. 600 miles 3470: The section of each end of a barge which is heavily reinforced to take the pressure of pushing is called the __________.
Y a. headlog N b. towhead N c. collision bulkhead N d. bullnose 3491: You are the licensed Master of a towing vessel operating between New York and Tampa, Florida. If you carry four (4) deckhands onboard, how many must be able seamen?
N a. 4 Y b. 3 N c. 2 N d. 1 3588: Conventional anchors are least likely to hold in a bottom consisting of __________.
N a. soft clay N b. hard mud N c. sand Y d. rock 3654: Horizontal transverse motion of a vessel is known as __________.
N a. pitch N b. surge Y c. sway N d. heave 4014: The facewire refers to item __________. (D024DG )
Y a. I N b. H N c. B N d. A 4102: What characterizes a Ro-Ro vessel?
N a. May carry up to 24 passengers Y b. High freeboard and sail area N c. Long port stays required for cargo securing N d. Lightweight securing equipment trailers 4118: Which factor(s) affect lashing requirements aboard Ro-Ro vessels?
Y a. Ship’s characteristics and motion in a seaway N b. Trim of the vessel N c. Wide variations of air temperature N d. All of the above 4140: The disadvantage(s) of using web lashing on light vehicles aboard Ro-Ro vessels is that it __________.
N a. deteriorates in sunlight N b. cuts on sharp edges N c. is vulnerable to damage and pilferage Y d. All of the above 4155: Which factor(s) should be considered when loading vehicles or trailers aboard Ro-Ro vessels?
N a. Layout of decks N b. Vertical clearances N c. Tie-down and lashing Y d. All of the above 4443: You are signing on a deck officer, who will be designated as one of the GMDSS operators, before sailing foreign. Which statement is TRUE?
Y a. He/she must have an STCW certificate endorsed as "Valid for Service on Vessels Operating in the GMDSS System". N b. He/she must present either an FCC-issued license or a Coast Guard-issued license. N c. You must consult the "List of Qualifications" on the reverse of his/her FCC-issued license. N d. His/her Merchant Mariners Document must have an added endorsement as "Radio Electronics Officer".