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.
53: If an inflatable liferaft inflates upside down, you can right it by __________.
N a. pushing up on one side Y b. standing on the CO2 bottle, holding the bottom straps, and throwing your weight backwards N c. getting at least three or four men to push down on the side containing the CO2 cylinder N d. doing nothing; it will right itself after the canopy supports inflate 57: The minimum concentration of a vapor in air which can form an explosive mixture is called the __________.
N a. auto-ignition point N b. flash point Y c. lower explosive limit (LEL) N d. threshold limit value (TLV) 144: The unit of duration of a dash in Morse Code is __________.
N a. one and one-half times the length of a dot N b. twice the length of a dot Y c. three times the length of a dot N d. four times the length of a dot 209: The number 2 lifeboat on a tanker would be found __________.
Y a. on the port side N b. on the starboard side N c. abaft #1 lifeboat on the port side N d. abaft #1 lifeboat on the starboard side 223: The steering oar in a lifeboat is __________.
N a. shorter than the others N b. used for the stroke oar N c. used by the forward man in the boat to direct the bow Y d. longer than the others and should be lashed to the stern 240: According to 46 CFR Subchapter T the definition of a ferry includes vessels that __________.
N a. operate in other than ocean or coastwise service N b. have provisions only for deck passengers, vehicles, or both N c. operate on a short run on a frequent schedule between two points over the most direct water route Y d. All of the above 252: What, when removed, will result in the extinguishment of a fire?
N a. Nitrogen N b. Sodium Y c. Oxygen N d. Carbon dioxide 366: You have determined that a cargo space on a freight vessel is 45 feet by 36 feet by 62 feet. How many pounds of carbon dioxide is required for this space?
N a. 1674 N b. 2511 Y c. 3348 N d. 5022 524: The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word __________.
N a. Mayday Y b. Pan N c. Safety N d. Interco 524: The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word __________.
N a. Mayday Y b. Pan N c. Safety N d. Interco 596: The Master of a cargo or tank vessel shall be responsible that each lifeboat, except those free-fall launched, is lowered to the water with crew and maneuvered at least once every __________.
N a. week N b. month Y c. three months N d. year 678: Fire may be spread by which means?
N a. Conduction of heat to adjacent surfaces N b. Direct radiation N c. Convection Y d. All of the above 892: While you are working in a space, the fixed CO2 system is accidentally activated. You should __________.
N a. secure the applicators to preserve the charge in the cylinders N b. continue with your work as there is nothing you can do to stop the flow of CO2 Y c. retreat to fresh air and ventilate the compartment before returning N d. make sure all doors and vents are secured 973: You are on a vessel that has a metacentric height of 1.0 foot and a beam of 40 feet. What can you expect the rolling period of the vessel to be?
N a. 15.2 seconds N b. 15.9 seconds N c. 17.0 seconds Y d. 17.6 seconds 995: If you receive a message "A243" by any method of signaling, it would be referring to __________.
Y a. bearing N b. altitude N c. diving N d. speed 1039: On board small passenger vessels, fill lines and sounding pipes of gasoline tanks must extend directly __________.
Y a. to within one-half of their diameter from the bottom of the tank N b. To within one-half foot from the bottom of the tank N c. To the tank top N d. Midway between the top and bottom of the tank 1048: The angle of maximum righting arm corresponds approximately to the angle of __________.
Y a. deck edge immersion N b. the load line N c. downflooding N d. loll 1112: A combustible gas indicator meter is calibrated to read the percentage of __________.
N a. vapor to oxygen N b. the flammable limit concentration N c. the autoignition concentration Y d. the lower explosive limit concentration 1261: On small passenger vessels, when must watchmen patrol throughout the vessel to guard against and give alarm in case of fire or other danger?
N a. At all times outside normal work hours N b. At all times when the vessel is underway Y c. During the nighttime when the vessel carries overnight passengers N d. When the rest of the crew is asleep 1273: In launching a covered lifeboat, what would safely lower the lifeboat from inside the lifeboat cabin?
N a. Frapping line N b. Tricing line N c. Rottmer release Y d. Winch remote control wire 1345: An inflatable liferaft can be launched by __________.
N a. the float-free method ONLY N b. breaking the weak link on the painter Y c. throwing the entire container overboard and then pulling on the operating cord to inflate the raft N d. removing the securing straps 1381: Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces, such as in a pumproom, provided that the __________.
N a. persons in the space wear gas masks N b. persons in the space wear damp cloths over their mouths and nostrils Y c. ventilation system is secured and all persons leave the space N d. ventilation system is kept operating 1407: You are in a lifeboat when you sight the stars shown. You will be heading due north when you head for Polaris which is indicated by what letter? (D007SA )
N a. C N b. D N c. E Y d. F 1419: Your vessel is listing 4° to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by the head with one foot of freeboard at the bow. Which action should you take FIRST?
N a. Press up the slack NO.1 starboard double bottom tank. Y b. Pump out the forepeak tank. N c. Eliminate the water in the 'tween decks aft. N d. Jettison stores out of the paint locker in the fo'c'sle. 1530: Which vessel in ocean service is not subject to Annex V of MARPOL 73/78?
N a. A 20-foot sailing vessel N b. A 26-foot tug and tow N c. An uninspected 35-foot passenger vessel Y d. A Navy Destroyer 1603: During loading and discharging operations, in addition to when the cargo tanks have been properly filled, each inert gas system must be capable of maintaining a minimum gas pressure of __________.
N a. 150 millimeters of water pressure N b. 125 millimeters of water pressure Y c. 100 millimeters of water pressure N d. 75 millimeters of water pressure 1703: With regard to aerodynamic lift, which statement is TRUE?
Y a. If the thrust on a sail becomes excessive when close-hauled, it is likely to capsize the vessel rather than drive it. N b. When a sail is trimmed too tight, turbulence will break out on the windward side of the sail and cause a telltale there to flutter. N c. A properly trimmed sail should have laminar flow on the windward side and turbulent flow on the leeward side. N d. Adjusting the angle of attack on a mainsail is accomplished by adjusting the outhaul or the vang, if fitted. 1828: A gas-free certificate would usually be issued by a(n) __________.
N a. ABS marine surveyor Y b. certified marine chemist N c. port engineer N d. Coast Guard marine inspector 1878: The liquid mud tanks on your vessel measure 20'L by 18'B by 7'D. The vessel's displacement is 866 T and the specific gravity of the mud is 1.8. What is the reduction in GM due to 2 of these tanks being slack?
N a. 0.24 foot N b. 0.56 foot N c. 0.95 foot Y d. 1.12 feet 1997: Vessels to which Annex V to MARPOL 73/78 applies may discharge garbage containing plastics __________.
N a. 5 nautical miles from nearest land N b. 12 nautical miles from nearest land N c. 25 nautical miles from nearest land Y d. None of the above 2178: Your drafts are: FWD 6'-01", AFT 6'-05". From past experience, you know that the vessel will increase her draft by 1 inch for every 7 tons loaded. There is rig water on board and 20 tons of deck cargo. How many more tons of cargo can be loaded while maintaining the same trim? (D037DG )
N a. none N b. 10.5 tons Y c. 14.0 tons N d. 17.5 tons 2182: Your drafts are: FWD 5'-08", AFT 6'-02". From past experience, you know that the vessel will increase her draft 1 inch for every 8 tons loaded. There is rig water on board and 11 tons of deck cargo. How many more tons of cargo can be loaded and still maintain the same trim? (D037DG )
N a. None N b. 10 tons N c. 18 tons Y d. 24 tons 2238: Which system has the least effective radius of operation?
N a. HF SITOR N b. MF NBDP Y c. VHF DSC N d. NAVTEX 2247: When a rescue vessel approaches a survival craft in heavy seas, the person in charge of the survival craft should __________.
N a. tie up to the rescue vessel N b. transfer only those personnel who are not seasick Y c. wait for calmer weather before transferring personnel N d. transfer all personnel immediately 2353: Which documents are required by GMDSS for vessels on international voyages (other than the Great Lakes)?
N a. A copy of the IMO master plan of shore-based facilities N b. Station logs N c. 47 CFR Part 80 FCC Rules and Regulations Y d. All of the above 2474: Your vessel's drafts are FWD 19'-03", AFT 21'-07". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 142 tons of cargo are loaded 86 feet forward of amidships.
N a. FWD 18'-09", AFT 21'-04" N b. FWD 18'-10", AFT 21'-01" N c. FWD 19'-10", AFT 21'-08" Y d. FWD 19'-11", AFT 21'-04" 2642: When properly set and drawing, a fore-and-aft sail has a cross-section that __________.
N a. is a uniform curve Y b. is a curve with more curve at the luff N c. is a curve with more curve at the leach N d. approximates a straight line 2954: Your sailing drafts are: FWD 19'-06", AFT 20'-10" and the GM is 3.3 feet. What will be the angle of list if the #2 starboard deep tank (capacity 100 tons, VCG 19.1 feet, and 24 feet off the centerline) is filled? (Use the data in Section 1, the blue pages, of the Stability Data Reference Book)
N a. Less than 1° N b. 2° Y c. 4° N d. 6° 3042: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the LCG-FP of the liquid load. ST-0100
N a. 271.2 ft N b. 260.3 ft Y c. 251.9 ft N d. 247.2 ft 3501: The DEEP DRILLER as currently configured is limited to a maximum water depth of __________.
N a. 400 feet Y b. 600 feet N c. 800 feet N d. 1,000 feet 3535: The marine riser on the DEEP DRILLER should be disconnected if it appears the ball joint angle will exceed 10° or the mooring line tensions will exceed __________.
N a. 348 kips N b. 500 kips Y c. 522 kips N d. 600 kips 3553: The DEEP DRILLER is loaded as shown in Sample Load Form #3 (Preparing to Drill). What is the margin on the maximum allowable KG while drilling?
Y a. 4.58 feet N b. 5.24 feet N c. 6.27 feet N d. 6.94 feet 3855: Which document will describe lifesaving equipment located aboard your vessel?
N a. Muster List ("Station Bill") Y b. Certificate of Inspection N c. Forecastle Card N d. Clearance Papers 3912: If you must enter water on which there is an oil fire, you should __________.
N a. protect your life preserver by holding it above your head Y b. enter the water on the windward side of the vessel N c. keep both hands in front of your face to break the water surface when diving head first N d. wear very light clothing 3957: The DEEP DRILLER is loaded as shown in the Sample Load Form #4 (Drilling). What would be the weight of the mud in pit #4 if the sounding level changed from 8 to 6 feet?
Y a. 80.00 long tons N b. 77.75 long tons N c. 83.34 long tons N d. 106.67 long tons 4210: You are loading in a port subject to the summer load line mark and bound for a port subject to the winter load line mark. You will enter the winter zone after steaming four days. You will consume 35 tons of fuel, water, and stores per day. The hydrometer reading at the loading pier is 1.0083, and the average TPI is 65. What is the minimum freeboard required at the start of the voyage? (Get Table Data)
Y a. 74 inches N b. 78 inches N c. 80 inches N d. 86 inches 4287: While in ocean transit at a draft of 10 feet, the Coastal Driller has a maximum allowed KG of __________.
N a. 42 feet N b. 44 feet Y c. 65 feet N d. 70 feet 4525: Preload tank 22B on the COASTAL DRILLER contains 5.0 feet of preload. It is decided to complete filling the tank. What is the TCG of the added liquid?
N a. 65.60 feet N b. 65.74 feet N c. 65.77 feet Y d. 65.83 feet 4814: You are scheduled to load 3900 tons of cargo, 45 tons of crew effects and stores and 359 tons of fuel. Use the blue pages of the Stability Data Reference Book to determine the vessel's mean draft in fresh water.
N a. 19'-00" N b. 18'-07" N c. 18'-04" Y d. 18'-01" 4815: What is the maximum amount of variables that may be taken aboard the COASTAL DRILLER while loaded as shown in the Sample Load Form #3 (drilling)?
N a. 1000 kips N b. 681 kips N c. 89 kips Y d. 0 kips 5203: Among the possible causes of unexpected rapid increasing inclination of the floating COASTAL DRILLER is __________.
N a. consumption of on board liquids N b. miscalculation of loads N c. external environmental forces Y d. flooding due to hull damage 5408: One of the first actions to be taken by survivors when they have boarded an inflatable liferaft is to __________.
N a. stream the sea anchor Y b. take an anti-seasickness pill N c. open the pressure relief valve N d. drink at least one can of water 6801: Where must the 0mster or person in charge of a MODU record the date of each test of emergency lighting and power systems and the condition and performance of the equipment?
N a. On the Certificate of Inspection N b. On the Muster List ("Station Bill") N c. In the Operations Manual Y d. In either the official or unofficial log 7601: At all angles of inclination, the true measure of a vessel's stability is the __________.
N a. metacentric height N b. displacement Y c. righting moment N d. inclining moment 7625: The original equilibrium position is always unstable when __________.
Y a. metacentric height is negative N b. KM is higher than KG N c. KG exceeds maximum allowable limits N d. free surfaces are excessive 8647: While the DEEP DRILLER is loaded as shown in Sample Form #4 (Drilling), casing is accidentally dropped over the port side. Because the tank sounding level and port forward inclination are rapidly increasing, you decide that tank 1P is damaged. Your best countermeasure is to __________.
Y a. deballast from tank 2P N b. dump the mud N c. counterflood into 9S N d. counterflood into C3S 9125: Automatic fire dampers in ventilation systems are operated by a __________.
N a. remote operated valve Y b. fusible link N c. CO2 system pressure switch N d. heat or smoke detector 9265: Oil well casing will fail when the external pressure exceeds the internal pressure by a differential equal to the casing's rated __________.
N a. tensile strength N b. hoop stress Y c. collapse pressure N d. burst pressure 9583: Each person on a MODU carrying immersion suits must wear the immersion suit in a boat drill, or participate in a drill which includes donning the suit and being instructed in its use at least once every __________.
Y a. month N b. 2 months N c. 3 months N d. 6 months 9612: What would be a major consequence of the refrigeration system for a low-pressure CO2 fixed fire extinguishing system remaining inoperable?
Y a. The entire charge might eventually be lost due to CO2 venting out through the relief valve. N b. Liquid CO2 would vent out through the safety valve as the temperature increases. N c. Excessive condensation inside the tank would freeze, causing a restriction in the discharge piping. N d. The warmed charge of CO2 would not be effective in extinguishing a fire.