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.
77: When steering a vessel, a good helmsman will __________.
N a. use as much rudder as possible to keep the vessel on course N b. apply rudder to move the compass card towards the lubbers line when off course Y c. repeat back to the watch officer any rudder commands before executing them N d. keep the rudder amidships except when changing course 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 122: You may be able to avoid loss of suction in a pump by __________.
N a. using a full tank to keep the pump primed N b. opening the vent cock on the pump N c. closing down on the tank valve Y d. All of the above 141: On a sea going towing vessel of 150 gross tons, there are six (6) seamen in the deck crew. How many certificated able seamen are required if the voyage is over 600 miles?
N a. 1 N b. 2 N c. 3 Y d. 4 162: Oil may NOT be transferred unless __________.
N a. there are two certificated tankermen on each vessel N b. the vessel is equipped with constant-tension winches Y c. discharge containment equipment (i.e. drip pans) are in place N d. All of the above 216: As a ship moves through the water, it drags with it a body of water called the wake. The ratio of the wake speed to the ship's speed is called __________.
N a. propeller velocity N b. speed of advance N c. wake distribution Y d. wake fraction 272: When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery, check it __________.
N a. one meter from the tank bottom and one meter below the tank top Y b. one half the ullage of the tank and one meter below the tank top N c. one half the ullage of the tank and one meter above the tank bottom N d. at three meter intervals from the tank top to the bottom 413: A person is found operating a vessel while under the influence of alcohol. He/she is liable for __________.
N a. imprisonment for up to three years Y b. a civil penalty of not more than $5,000 N c. a fine of not more than $3,000 N d. a fine of not more than $10,000 468: Sweat damage in a hatch full of canned goods in cartons will occur when the __________.
N a. air temperature is higher than the temperature of the cargo N b. air temperature is lower than the temperature of the cargo Y c. dew point is higher than the temperature of the cargo N d. dew point is lower than the temperature of the cargo 480: What is NOT a requirement for the preparation of used, gasoline-propelled cars if they are to be carried as ordinary cargo and not as hazardous cargo?
N a. The engine must be run until it dies from lack of fuel. Y b. The fuel tank must be inerted with CO2. N c. The ignition key may not be in the ignition. N d. The vehicle must be inspected for fuel leaks. 483: A fiber towing hawser is readied for service by __________.
N a. spooling it on a winch cathead N b. coiling it in a counterclockwise direction on the fantail Y c. faking it on deck in a fore and aft direction N d. spooling it on a reel lying on its side to prevent rolling 499: Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. To adjust the trim, you may __________.
N a. add ballast forward N b. load more cargo forward Y c. shift bunkers forward N d. All of the above 524: The purpose of the stripping bar on an anchor windlass is to __________.
N a. clean off any mud that may have accumulated on the chain N b. engage or disengage the wildcat N c. fairlead the chain from the hawsepipe to the wildcat Y d. prevent the chain from fouling the wildcat 561: Which space cannot be deducted from gross tonnage when calculating net tonnage?
N a. Crew messroom Y b. Forepeak ballast tank N c. Master's cabin N d. Chain locker 580: Which statement is FALSE about using a wire bridle on an ocean tow?
N a. The inboard end of each bridle leg should have a large eye splice to fit over the bitts. Y b. The strength of each leg should be at least one-half that of the main towing hawser. N c. Each leg should be at least 60 to 90 feet long. N d. None of the above 680: You must medevac a critically injured seaman by helicopter hoist. Which statement is TRUE?
N a. The ship's relative wind should be from dead ahead at 10 to 30 knots. Y b. The deck crew at the hoist point should not wear baseball hats. N c. The helicopter's drop line should be secured to the ship not more than 15 feet from the hoist position. N d. When using a "horse collar", the bight of the loop should be around the chest of the injured seaman. 692: The tow makeup that is designed to keep the catenary of the tow hawser to a minimum is called the __________.
Y a. Christmas tree tow N b. tandem tow N c. British tow N d. tandem tug tow 712: What is the effect of releasing the towline in a tripping situation?
Y a. It disconnects the capsizing force and allows the tug to recover from its list. N b. It frees the tug from its towing responsibilities. N c. There is no effect other than relief. N d. Yawing 785: With rudders amidships and negligible wind, a twin-screw vessel moving ahead on the port screw and backing on the starboard screw will __________.
N a. move in a straight line Y b. pivot to starboard N c. pivot to port N d. walk sideways to starboard 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. 853: Who is responsible for properly manning a vessel in accordance with all applicable laws, regulations and international conventions?
N a. The (USCG) Officer in Charge of Marine Inspection N b. The (USCG) Captain of the Port N c. The owner or operator of the vessel Y d. The Master of the vessel 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 1002: While steering by autopilot you notice that the vessel has deviated 15 degrees from course and there is no corrective rudder being applied. As a standard operating procedure you may need to __________.
N a. check the setting of the rudder adjustment N b. check the setting of the weather adjustment N c. immediately engage the trick wheel Y d. switch to the other steering system 1133: To properly rig the downhaul to your stage for lowering, you must __________.
N a. take only figure eights around the horns Y b. take 2 or 3 round turns around the stage and then belay the downhaul around the horns N c. take 2 round turns around the stage and then dip the third turn to form a clove hitch N d. pass the downhaul through the bridle formed by the standing part and then take round turns 1174: Compared to manila line, size for size, nylon line __________.
N a. has less strength than manila line Y b. has more strength than manila line N c. is equivalent to manila line N d. will rot quicker than manila line 1290: What is NOT an advantage of double bottom ships?
N a. The tank top forms a second skin for the vessel. N b. The center of gravity of a loaded bulk cargo ship may be raised to produce a more comfortable roll. N c. The floors and longitudinals distribute the upward push of the water on the ship's bottom. Y d. They are less expensive to construct because of increased access space. 1420: Tensile stress is a result of two forces acting in __________.
Y a. opposite directions on the same line, tending to pull the material apart N b. opposite directions on the same line, tending to compress the object N c. opposite directions along parallel lines N d. the same direction along parallel lines 1566: In bad weather, what length of chain should be used with a single anchor?
N a. 3 times the depth of water N b. 6 times the depth of water Y c. 10 times the depth of water N d. 15 times the depth of water 1787: Which picture represents a blackwall hitch? (DO30DG )
N a. F N b. H N c. P Y d. S 1903: When securing a manila line to a bitt what is the minimum number of round turns you should take before figure-eighting the line?
N a. None Y b. 1 N c. 2 N d. 3 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 1970: The structural member indicated by the letter L is a __________. (D033DG )
N a. web frame N b. bilge keel N c. side keel Y d. longitudinal 1988: When towing, what is the main reason for using a chain bridle on a wire hawser?
N a. It makes for an easy connection. Y b. It gives a spring effect to cushion the shock. N c. It eliminates the necessity of a swivel. N d. It does not chafe. 2046: The structural member indicated by the letter I is the __________. (D033DG )
N a. garboard strake N b. center pillar Y c. keel N d. girder 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 2109: What is NOT an item that requires the vessel to be dry-docked?
N a. Inspection of tail shaft liner N b. Repacking and grinding of skin valves Y c. Verification of load line measurements N d. Belt gauging 2109: What is NOT an item that requires the vessel to be dry-docked?
N a. Inspection of tail shaft liner N b. Repacking and grinding of skin valves Y c. Verification of load line measurements N d. Belt gauging 2135: A load line certificate is valid for how many years?
N a. 1 N b. 2 N c. 3 Y d. 5 2229: You are using tackle number 5 to lift a weight. The hauling part of this tackle is bent to the weight hook of tackle number 9. What is the mechanical advantage of this rig? (DO29DG )
Y a. 20 N b. 9 N c. 5 N d. 4 2286: Cargo that is highly susceptible to damage by tainting from odorous cargo is called __________.
N a. clean cargo Y b. delicate cargo N c. dry cargo N d. immune cargo 2290: The sprocket teeth on a wildcat are known as the __________.
N a. pawls N b. devil's claws Y c. whelps N d. pockets 2316: A lookout can leave his/her station __________.
N a. at any time N b. at the end of the watch N c. 15 minutes before the end of the watch Y d. only when properly relieved 2325: Which line cannot be spliced?
N a. Braided line with a hollow core N b. Double-braided line Y c. Braided line with a solid core N d. Any line can be spliced 2351: What is the area of a circle with a diameter of 12 feet after a sector of 86° has been removed?
N a. 108.57 square ft. Y b. 86.08 square ft. N c. 28.65 square ft. N d. 27.14 square ft. 2476: At the outbreak of war your ship is caught in an enemy port. Which statement is FALSE?
N a. You should attempt to contact U.S. Consular officials. N b. You should attempt to clear for sea before your ship is interned. Y c. You should resist boarding by local officials. N d. You should try to send a Ship Hostile Action Report to the NGA (formerly NIMA). 2553: The key to rescuing a man overboard is __________.
N a. good equipment N b. a dedicated crew Y c. well-conducted drills N d. good communication 2792: When relieving the helm, the new helmsman should find it handy to know the __________.
N a. variation in the area Y b. amount of helm carried for a steady course N c. leeway N d. deviation on that heading 2930: A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?
Y a. When dead in the water, it is often difficult to find the neutral position and slight headway or sternway may result. N b. When going directly from full ahead to full astern, there is complete steering control. N c. When the vessel has headway and the propeller is in neutral, there is no effect on rudder control. N d. When maneuvering in port, full ahead or astern power can usually be obtained without changing shaft RPM. 2932: Which type of rudder may lose its effectiveness at angles of 10 or more degrees?
N a. Contra-guide Y b. Balanced spade N c. Unbalanced N d. Flat plate 3094: Your vessel is underway and approaching an overhead obstruction on Lake Superior. Given the following information, determine the clearance between your vessel and the obstruction. Highest point on vessel: 74 ft. Lowest point of obstruction: 126 (LWD) Monthly lake level: +2 (LWD) International Great Lakes Datum: 600.0 (182.88 meters)
N a. 474 feet N b. 400 feet N c. 175 feet Y d. 50 feet 3134: When using two tugs to assist in mooring a large, deeply laden ship, the most powerful tug is usually placed __________.
Y a. forward to control the bow N b. amidships to move the entire vessel evenly N c. aft to assist the ship's rudder and propeller N d. anywhere, since the maneuverability of the tug governs the placement not the power 3320: Which type of bottom is best suited for holding an anchor of a small boat?
Y a. Mud and clay N b. Rocky N c. Sandy N d. Gravel 3342: Which term refers to a transverse curvature of the deck?
N a. Deadrise Y b. Camber N c. Freeboard N d. Flare 4036: When a cargo boom or crane is rated at varying capacities, there will be a table at the controls which relates safe working load to __________.
N a. winch speed N b. boom strength Y c. load radius N d. cable strength 4108: Any vehicle to be loaded aboard a Ro-Ro vessel must __________.
N a. weigh less than 22 tons Y b. be provided with an effective braking system N c. have securing points with each aperture capable of accepting more than one lashing N d. All of the above 4124: Which variable factor affects the initial lashing requirements aboard Ro-Ro vessels?
N a. Vessel's draft Y b. Center of gravity of vehicle or cargo unit N c. Changes in humidity N d. Age of vehicle or cargo unit 4153: What should you be concerned with when loading and securing vehicles on a Ro-Ro?
Y a. Number, position and angle of lashes N b. Number of axles N c. Disconnecting the battery cables to prevent fire hazard N d. Minor air pressure changes in the tires 4224: What does item "K" refer to in this illustration of a 30-ton pedestal crane? (D045DG )
N a. Manual slewing cables Y b. Rider block taglines N c. Jib luffing cables N d. Cargo snaking cables 4266: Which statement is TRUE concerning the tandem working arrangement of pedestal cranes when completing a quad lift?
N a. The cranes require shoreside assistance to handle heavy cargos. N b. The cargo discharge cannot be accomplished without pendulation. N c. The cargo discharge cannot be performed at anchor. Y d. The discharge is slow due to the size of the cargo and all the cranes working together. 4379: When relieving the helm, the new helmsman should know the __________.
N a. maximum rudder angle previously used N b. gyro error N c. variation Y d. course per magnetic steering compass