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.
39: Combustible liquids are divided into how many grades?
N a. One Y b. Two N c. Three N d. Four 165: You must notify the nearest Coast Guard Marine Safety Office as soon as possible after your vessel has been damaged in excess of __________.
Y a. $25,000 N b. $10,000 N c. $1,500 N d. $1,000 178: 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 186: The pivoting point of a vessel going ahead is __________.
N a. at the hawsepipe Y b. about one-third of the vessel's length from the bow N c. about two-thirds of the vessel's length from the bow N d. near the stern 214: The helm command "meet her" means __________.
Y a. use rudder to check the swing N b. decrease the rudder angle which is on N c. steer more carefully N d. note the course and steady on that heading 309: When planning the loading or discharging of a VLCC (100,000 DWT+) what is the most important consideration?
N a. Draft and trim Y b. Limits of the bending moments N c. Rate of discharging N d. Rate of loading 455: A vessel having continuous closely spaced transverse strength members is __________.
N a. longitudinally framed Y b. transversely framed N c. cellular framed N d. web framed 493: What does "end for end" mean in regard to a towing hawser?
N a. To take the kinks out of the hawser N b. To fake it down in figure eights N c. To increase the catenary Y d. To swap ends of the hawser to minimize wear 541: The official number of a documented vessel is __________.
N a. not required to be marked anywhere on the vessel Y b. required to be permanently marked on the vessel's structure N c. required to be painted on the vessel's stern N d. required to be painted on the vessel's bow 744: When using natural-fiber rope, you should NEVER __________.
N a. dry the line before stowing it N b. reverse turns on winches periodically to keep out kinks Y c. try to lubricate the line N d. use chafing gear 927: Sluicing or slushing wire rope __________.
N a. prevents internal and external rust and corrosion N b. reduces chafing and increases its useful service life N c. reduces internal friction within the wire Y d. All of the above 967: While steering by autopilot you notice that the vessel is deviating from the given course and there is no follow up with corrective rudder action to return to the proper heading. The emergency operating procedure should require you to immediately change operation from __________.
Y a. "gyro" to "hand" N b. "hand" to "gyro" N c. "gyro" to "control" N d. "control" to "hand" 985: You have the "conn" at the time the helmsman who is steering by hand reports that the rudder is not responding to the wheel. Your FIRST action should be to __________.
N a. call the engineroom and report that you have lost steering N b. signal the engineroom to stop the engines Y c. shift the selector switch to the other steering system N d. call the Master 1059: You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE?
N a. Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleaned. N b. The hoses to portable cleaning machines should be disconnected before the machines are removed from the tank. N c. The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residue. Y d. Steam cleaning and water washing are both capable of generating electrostatic charges within a tank. 1103: What should you inspect to be sure that it is safe to go aloft in a bosun's chair?
N a. The gantline N b. The tail block N c. The chair and bridle Y d. All of the above 1112: What is an advantage of the 6X37 class of wire rope over the 6X19 class of wire rope of the same diameter?
Y a. Greater flexibility N b. More resistance to corrosion N c. More resistance to elongation N d. Lower weight per foot 1131: U.S. Customs, upon boarding a vessel desiring entry into a U.S. port, would inspect which document?
N a. Cargo Manifest N b. Certified Crew List N c. Stores List Y d. All of the above 1146: While your vessel is docked port side to a wharf, a sudden gale force wind causes the vessel's bow lines to part. The bow begins to fall away from the dock, and no tugs are immediately available. Which measure(s) should you take FIRST?
N a. Call the Master and the deck gang. N b. Slip the stern lines, let the vessel drift into the river, and then anchor. Y c. Let go the starboard anchor. N d. Obtain assistance and attempt to put some new bow lines out. 1226: You are docking a vessel starboard side to with the assistance of two tugs. You are attempting to hold the vessel off by operating both tugs at right angles to the vessel and at full power. You must ensure that __________.
N a. steerageway is not taken off N b. the bow doesn't close the dock first N c. the bow closes the dock first Y d. the ship has no headway at the time 1380: The deck beam brackets of a transversely framed vessel resist __________.
N a. hogging stresses N b. sagging stresses Y c. racking stresses N d. shearing stresses 1491: While underway, part of your cargo is damaged by fire. In marine insurance terms this partial loss is called __________.
N a. absolute total loss N b. constructive total loss N c. general average Y d. particular average 1497: Which of the pictures in illustration DO30DG represents a round turn and two half hitches? (DO30DG )
N a. E Y b. F N c. Q N d. S 1500: Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure?
N a. Tearing through the member is more likely in this type connection. N b. The weld may be broken by the stresses caused by riveting. N c. The weld increases the tensile stress on the rivet heads. Y d. The welding must be completed before the riveting commences. 1532: To determine the number of portable fire extinguishers required on an inspected vessel, you should check the __________.
N a. hot work permit Y b. Certificate of Inspection N c. Safety of Life at Sea Certificate N d. Muster List ("Station Bill") 1560: Which arrangement of shell plating is used most in modern shipbuilding?
N a. Clinker Y b. Flush N c. In-and-Out N d. Joggled 1582: Which is an example of failure to exercise due diligence?
Y a. Overloading N b. Sailing short of union manning requirements N c. Sailing with less than 30% reserve fuel oil supply N d. Sailing short of being full and down 1615: A towing vessel should be on the crest of a wave at the same time as its tow and in the trough at the same time. The term used to describe this is __________.
N a. tow strain N b. catenary length Y c. being in step N d. Williamson's Tow 1675: What is the name of the mark indicated by the letter D? (D003DG )
Y a. Tropical load line N b. Summer load line N c. Fresh load line N d. Winter load line 1678: Grade D combustible liquids have a maximum flash point of __________.
N a. 109°F N b. 100°F Y c. 149°F N d. 80°F 1697: Using the graph shown, if the dry bulb temperature is 85°, and the wet bulb temperature is 73°, what is the relative humidity in a cargo hold? (D008DG )
N a. 42% Y b. 55% N c. 67% N d. 85% 1724: A "bowline" is used to __________.
N a. join lines of equal size Y b. form a temporary eye (loop) at the end of a line N c. be a stopper N d. keep a line from fraying 1816: Which picture shown represents a square knot? (DO30DG )
Y a. W N b. R N c. P N d. H 1821: While towing, what is the principal danger in attempting to swing a barge on a short hawser in order to slow the barge's speed?
N a. The barge may capsize from the sharp turn. Y 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 when turning too quickly. N d. Dangerous wakes may result from the swinging barge and capsize the tug. 1830: Using the graph, if the dry bulb temperature is 76°, and the wet bulb temperature is 58°, what is the relative humidity in a cargo hold? (D008DG )
Y a. 35% N b. 47% N c. 61% N d. 76% 1950: You are proceeding to a distress site and expect large numbers of people in the water. Which statement is TRUE?
N a. You should stop to windward of the survivors in the water and only use the ship's boats to recover the survivors. N b. If the survivors are in inflatable rafts you should approach from windward to create a lee for the survivors. Y c. An inflatable liferaft secured alongside can be an effective boarding station for transfer of survivors from the boats. N d. Survivors in the water should never be permitted alongside due to the possibility of injury from the vessel. 1963: What should you do to a line to prevent fraying where it passes over the side of the vessel?
N a. Worm that part of the line. N b. Splice that part of the line. Y c. Cover it with chafing gear. N d. Install a cleat. 1977: On a crane, the boom indicator tells the operator what angle the boom angle is compared to the __________.
N a. vertical position Y b. horizontal position N c. boom stop angle N d. minimum radius angle 2139: You are proceeding to the area of reported distress. When you arrive at the reported position, the vessel in distress is not sighted. What type of search should be conducted?
N a. Sector search Y b. Expanding square N c. Track crawl N d. Parallel track search 2209: Certain cargoes must be segregated because of their __________.
Y a. inherent characteristics N b. weight N c. destination N d. danger to humans 2226: The knot lettered O is a __________. (DO30DG )
N a. timber hitch Y b. barrel hitch N c. carrick bend N d. blackwall hitch 2230: What is the name of tackle number 1? (D029DG )
Y a. Whip N b. One-fold purchase N c. Gun tackle N d. Runner 2254: You are using tackle number 4 to lift a weight. The hauling part of this tackle is bent to the weight hook (w) of tackle number 10. What is the mechanical advantage of this rig? (D029DG )
N a. 4 N b. 5 N c. 9 Y d. 20 2278: You will load and carry a bulk cargo of sulfur at ambient temperature. Which statement is true?
N a. Wooden covers must be laid over the bilge wells to prevent the sulfur from entering the bilges. Y b. Bulk sulfur may be carried without a special permit providing the vessel complies with all applicable regulations. N c. The major characteristic of this cargo is that it forms sulfuric acid upon contact with water. N d. Other hazardous material may not be stowed in the same hold as the sulfur but may be carried on deck above the hold. 2549: An example of a modern anchor which has a stock is a(n) __________.
N a. articulated anchor N b. Flipper Delta anchor N c. Baldt anchor Y d. Danforth anchor 2716: A channel is stated as having a controlling depth of 38 feet. Which statement is TRUE?
N a. At least 80% of the channel is cleared to the charted depth. N b. At least 50% of the channel is cleared to the charted depth. Y c. 100% of the channel width is clear to 38 feet. N d. The sides of the channel conform to at least 50% of the controlling depth. 2722: "Limber" is a term associated with __________.
N a. emergency gear Y b. drainage N c. deck cargo storage N d. securing gear 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 3000: The pipe used to connect two separate piping systems on a tank vessel is known as a __________.
Y a. crossover N b. transfer N c. connection N d. junction 3052: How should you signal the crane operator to lower the boom?
Y a. With arm extended and fingers closed, point thumb downward. N b. With arm extended downwards and forefinger pointing down, move hand in small horizontal circles. N c. Extend arm with the palm down, and hold this position rigidly. N d. With hands clasped in front of your body. 3081: A seaman is entitled by law to a release from Foreign Articles when __________.
N a. intoxicated N b. deductions are made from wages N c. injured Y d. the vessel is overloaded 3142: Why are stern towing bitts placed well forward of the rudder when hawser towing?
N a. To keep the hawser from fouling the rudder N b. To keep the towing bitts as far away as possible from the tugs pivoting point Y c. To allow the stern to swing more freely when using rudder N d. To have as much of the towing hawser in use as possible 3325: Flammable liquids should have what kind of label?
N a. Skull and crossbones N b. Yellow Y c. Red N d. White 3464: The ultimate or maximum strength of a wire rope is referred to as the __________.
N a. operating strength N b. working load Y c. breaking strength N d. lifting load 3486: When a two-leg sling is used to lift a load, a sling 40 feet long is better than one of 30 feet because the __________.
Y a. tension in the sling legs is less N b. load can be lifted higher N c. sling will be easier to attach N d. sling will be easier to remove 3583: Indicated horsepower refers to a towing vessel's power which is __________.
Y a. theoretically available N b. measured on a test bed N c. developed at the shaft N d. measured by dynamometer 3632: You are lifting a one-ton weight with a swinging boom. When comparing the stresses on the rig with the boom at 20° to the horizontal to the stresses when the boom is at 60° to the horizontal, which statement is TRUE?
Y a. The thrust on the boom is greater at 60°. N b. The stress on the topping lift is greater at 60°. N c. The stress on the heel block is less at 20°. N d. The stress on the head block is less at 60°. 3644: You are drifting in a locale where there is no current. As a rule, your vessel will lie __________.
N a. bow to the wind Y b. beam to the wind N c. stern to the wind N d. with the wind on the quarter 4011: Under defense plans, operation of electronic aids may be temporarily suspended with __________.
N a. thirty (30) day's notice N b. a week's notice N c. one day's notice Y d. no notice 4054: "Hanging a barge off" means to __________.
Y a. moor a damaged barge to the bank and leave N b. remove and deliver a loaded barge from a multiple tow N c. remove a barge while locking through N d. tow an empty barge astern 4072: How should you signal the crane operator to stop in an emergency?
N a. Extend arm with the palm down and hold this position rigidly. N b. Place clasped hands in front of your body. Y c. Extend arm and move hand rapidly right and left with the palm down. N d. Place both fists in front of the body with the thumbs pointing outward.