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.
49: You are fighting a fire in the electrical switchboard in the engine room. You should secure the power, then __________.
N a. use a portable foam extinguisher N b. use a low-velocity fog adapter with the fire hose Y c. use a portable CO2 extinguisher N d. determine the cause of the fire 154: The standard rate of signaling by flashing light is __________.
N a. twenty letters per minute N b. thirty letters per minute Y c. forty letters per minute N d. fifty letters per minute 187: What represents poor sanitary procedures?
N a. Keep and use a separate filling hose for potable (drinking) water. Y b. Locate potable (drinking) water tanks as low as possible in the bilge. N c. Eliminate enclosed spaces in which trash, food particles, dirt may gather. N d. After washing dishes with soap and warm water, sterilize them in water of at least 170°F (76.7°C). 686: You should be most concerned about a possible explosion or fire in fuel tanks __________.
Y a. during fueling when the fuel first strikes the tank bottom N b. during fueling when the fuel strikes fuel already in the tank N c. when underway as the fuel is moved by wave action N d. shortly after fueling when fuel vapors gather 770: A vessel is described as a two compartment vessel when it __________.
N a. has no more than two compartments N b. has two compartments in addition to the engine room N c. will sink if any two compartments are flooded Y d. will float if any two adjacent compartments are flooded 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 1045: Which group would be used to send the signal Greenwich mean time 11:35 pm?
N a. GMT 1135PM N b. T 2335 GMT Y c. Z 2335 N d. G 2335 1107: In the production of chemical foam by a continuous-type generator __________.
N a. the maximum water pressure to be used is 50 psi Y b. the speed of foam production is slower at lower water temperatures N c. each pound of foam powder produces about 800 gallons of chemical foam N d. fresh water only should be used 1344: What is the purpose of the hydrostatic release on an inflatable liferaft?
Y a. To release the raft from the cradle automatically as the ship sinks N b. To inflate the raft automatically N c. To test the rafts hydrostatically N d. None of the above 1372: It is necessary to secure the forced ventilation to a compartment where there is a fire to __________.
N a. allow the exhaust fans to remove smoke N b. extinguish the fire by carbon monoxide smothering Y c. prevent additional oxygen from reaching the fire N d. protect fire fighting personnel from smoke 1424: Halon gas will decompose and may form very hazardous toxic fumes when discharged __________.
Y a. directly on flames N b. at room temperature N c. in an extremely cold climate N d. None of the above 1425: Which advantage does dry chemical have over carbon dioxide (CO2) in firefighting?
N a. Compatible with all foam agents N b. Cleaner Y c. More protective against re-flash N d. All of the above 1477: A fire starts on your vessel while refueling. You should FIRST __________.
N a. stop the ventilation Y b. sound the general alarm N c. determine the source of the fire N d. attempt to extinguish the fire 1709: Why is gas-freeing rarely required for LPG cargo tanks?
N a. LPG is compatible with all cargos. N b. LPG's high oxygen content makes it nonvolatile. N c. Cargo tanks are inspected less frequently than on oil tankers. Y d. The cargo tanks are used for one type of cargo only. 1791: Where is the GMDSS Radio Logbook kept aboard ship?
N a. Attached to the Deck Logbook Y b. At the principal radio operating location N c. In the Chief Mate's office N d. In the Master's office 2126: Which spaces are required to be segregated from cargo tanks carrying grades A, B, C, or D cargoes?
N a. Pump rooms N b. Enclosed deck spaces N c. Cofferdams Y d. Navigation spaces 2210: To check stability, a weight of 10 tons is lifted with the jumbo boom whose head is 45 ft. from the ship's centerline. The clinometer show's a list of 5.0° with weight suspended. Displacement including the weight is 9,000 tons. The GM while in this condition is __________.
Y a. 0.57 foot N b. 0.72 foot N c. 0.96 foot N d. 1.25 feet 2284: The flammable limits for crude oil are __________.
N a. 1% to 6% mixture in air N b. 20% to 40% mixture in air N c. 0% to 1% mixture in air Y d. unavailable 2286: What is the boiling point of carbon disulfide?
N a. 167°F Y b. 115°F N c. 111°F N d. 46°F 2327: How many B-II fire extinguishers must be in the machinery space of a 75-foot long fishing vessel propelled by engines with 600 brake horsepower?
N a. 5 N b. 4 N c. 3 Y d. 2 2347: Which references should the GMDSS radio operator consult for information on the proper operation of the equipment?
N a. ITU list of Equipment Operations Y b. The manufacturer's operating manuals N c. 47 CFR Part 80 N d. Information available through SafetyNET channels 2358: Your vessel's drafts are FWD 20'-08", AFT 23'-00". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the final drafts if 195 tons of cargo are discharged 76 feet aft of amidships.
N a. FWD 20'-05", AFT 21'-11" N b. FWD 20'-07", AFT 22'-01" Y c. FWD 20'-11", AFT 22'-00" N d. FWD 21'-03", AFT 22'-04" 2451: The end of the joint with the exterior threads is called the __________.
Y a. pin N b. stem N c. box N d. stand 2472: Which cargo grade(s) are permitted by regulations to be carried on a barge in tanks fitted only with gooseneck vents and flame screens?
N a. B only N b. B or C N c. C or D Y d. D or E 2634: Use the floodable length curve in Section 1, the blue pages, of the Stability Data Reference Book. If the curve represents 45 percent permeability and number 4 hold floods, the vessel will sink if the permeability exceeds what percent?
N a. 40 N b. 48 N c. 53 Y d. 60 2844: Your vessel's drafts are: FWD 27'-06", AFT 28'-02"; and the KG is 23.1 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 37° inclination if the center of gravity is 1.8 feet off center.
Y a. 0.4 foot N b. 1.4 feet N c. 1.8 feet N d. 2.6 feet 2934: Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 21.8 feet and the drafts are: FWD 23'-05", AFT 24'-04".
N a. 37° N b. 31° Y c. 26° N d. 21° 3013: Semisubmersibles A and B are identical. However, "A" is more tender than "B". This means that "A" relative to "B" has a __________.
N a. lower KG Y b. smaller GM N c. smaller roll angle N d. larger GZ 3033: The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the __________.
N a. volume of liquid in the tank Y b. volume of displacement of the vessel N c. location of the tank in the vessel N d. height of the center of gravity of the vessel 3078: If you see an individual fall overboard, you should __________.
N a. throw him/her a life buoy N b. hail "man overboard" N c. pass the word to the bridge Y d. All of the above 3364: The SS AMERICAN MARINER is loaded with the cargo shown. Use the white pages of The Stability Data Reference Book to determine the amount of liquid loading required in the double bottom tanks to meet a one compartment standard. ST-0124
N a. 444 tons N b. 644 tons N c. 1044 tons Y d. 1263 tons 3384: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 4236 tons of cargo on board with a KG of 27.2 feet. Use the white pages of the Stability Data Reference Book to determine the final KG of all the cargo after loading is completed. ST-0125
Y a. KG 26.9 feet N b. KG 27.3 feet N c. KG 27.8 feet N d. KG 28.1 feet 3456: When a sea anchor for a survival craft is properly rigged, it will __________.
N a. completely stop the survival craft from drifting Y b. help to prevent broaching N c. prevent the survival craft from pitching N d. prevent the survival craft from rolling 3485: In the event the motion of the DEEP DRILLER is such that critical motion limits are exceeded, you should __________.
N a. place the unit at 65 foot draft Y b. place the unit at 45 foot draft N c. shift loads to increase KG N d. place the unit in standby 3571: The DEEP DRILLER is anchoring in 600 feet of water. In the absence of environmental forces, the mooring lines should be adjusted to __________.
N a. 245 kips Y b. 222 kips N c. 237 kips N d. 194 kips 3864: Of the required ring life buoys for an OSV, how many must be equipped with a waterlight?
N a. 8 N b. 4 Y c. 2 N d. 1 3894: A liferaft with a capacity of 8 people used in ocean service is required by regulations to carry __________.
N a. 8 liters of fresh water N b. 12 units of provisions Y c. 12 liters of fresh water N d. 24 units of provisions 3949: When should you first have any food or water after boarding a lifeboat or liferaft?
N a. After 12 hours Y b. After 24 hours N c. Within 48 hours N d. Some food and water should be consumed immediately and then not until 48 hours later 4080: On a vessel of 12,500 tons displacement, compute the reduction in metacentric height due to free surface in a hold having free water on the tank top. The hold is 35 feet long and 50 feet wide. The reduction in metacentric height is __________.
N a. .14 ft N b. .45 ft N c. .55 ft Y d. .83 ft 4199: A vessel's tropical load line is 6 in. above her summer load line. Her TPI is 127 tons. She will arrive in the summer zone 8 days after departure. She will burn off about 47 tons/day fuel and water consumption is 12 tons/day. How many tons may she load above her summer load line if she loads in the tropical zone?
N a. 376 Y b. 472 N c. 762 N d. 1016 4458: Any firefighting equipment that is carried in addition to the minimum required must __________.
Y a. meet the applicable standards N b. be marked as additional equipment N c. be stowed in a separate area N d. All of the above 4513: When the COASTAL DRILLER is level at a draft of 10.5 feet, what is the value of the LCG?
N a. 00.0 feet N b. 111.35 feet Y c. 119.44 feet N d. 120.59 feet 4665: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the contents of #6 and #7 drill water tanks are discharged, what would be the new VCG?
N a. 47.21 feet N b. 47.69 feet N c. 48.41 feet Y d. 49.16 feet 5363: The COASTAL DRILLER, when underway was loaded as shown in Sample Load Form #1 (Rig Move). It is now preloaded at minimum air gap waiting for all settling to take place. The preload, weighing 7,191.7 kips, has LM 870,196 ft-kips and TM 2,158 ft-kips. What is the starboard leg reaction?
N a. 7,026 kips N b. 7,099 kips N c. 7,144 kips Y d. 7,180 kips 5695: The DEEP DRILLER is loaded as shown in Sample Load Form #4, (Drilling). In preparing for approaching heavy weather, the four leeward mooring lines are slacked. These actions reduce the __________.
Y a. natural pitch period N b. metacentric height N c. height of the righting arm N d. righting moment 5715: What can cause a lack of oxygen in a chain locker?
N a. Absorption N b. Osmosis N c. Evaporation Y d. Oxidation 5962: Your drafts are: FWD 25'-09", AFT 28'-03". Use the blue pages of the Stability Data Reference Book to determine the location of the center of flotation relative to amidships.
N a. 2.6 feet forward N b. 2.1 feet forward Y c. at the center of flotation N d. 0.8 foot aft 6492: The SS AMERICAN MARINER has drafts of: FWD 16'-10", AFT 19'-04". Use the white pages of the Stability Data Reference Book to determine the drafts if you ballast the forepeak with 73 tons of seawater.
Y a. FWD 17'-05.8", AFT 18'-10.9" N b. FWD 17'-06.2", AFT 18'-10.4" N c. FWD 17'-06.8", AFT 18'-09.8" N d. FWD 17'-07.4", AFT 18'-09.2" 6503: If, during helicopter refueling operations, fuel is spilled on clothing, the person should first __________.
N a. see the medic immediately N b. spray himself with foam or CO2 N c. complete his task and then see the medic Y d. remove the clothing and wash 6895: Who is responsible for reporting a casualty to a mobile offshore drilling unit?
N a. The pilot Y b. The owner N c. The surveyor N d. The engineer 7421: After receiving your distress call, the U.S.C.G. will ask you to switch to which SSB frequency?
N a. 2570 Y b. 2670 N c. 2770 N d. 2870 8217: What is the purpose of a striker plate?
N a. Provides surface for applying force on machinery Y b. Provides landing surface for the sounding bob N c. Absorbs machinery vibration N d. Prevents valve stem over-travel 8357: What is the principle behind dynamic braking as used on an anchor windlass?
Y a. Electrical loading N b. Mechanical distribution N c. Compressibility of air N d. Mechanical friction 8505: The DEEP DRILLER, loaded as shown in the Sample Load Form #4 (Drilling), discharges a non-liquid load of 275.8 long tons from a position 130 feet above the keel, 40 feet forward of amidships, and 30 feet to port of the centerline. What is the improvement in KGL?
N a. 0.67 foot N b. 0.98 foot Y c. 1.15 feet N d. 2.06 feet 8697: The DEEP DRILLER, at 58.0 feet draft in sea water, loads 200 long tons. What is the new displacement?
N a. 17,642 long tons N b. 17,842 long tons Y c. 18,042 long tons N d. 18,118 long tons 8715: Starboard ballast pump #1 on the DEEP DRILLER has failed. To deballast from tank C2SA using starboard ballast pump #2, it is necessary to open the manual valve and which motor driven valves?
Y a. 15, 34, 35, 36, 46, 48 N b. 16, 27, 32, 35, 36, 48 N c. 15, 33, 43, 48 N d. 14, 34, 35, 36, 46, 48 8985: The time required to incline from bow down to stern down and return to bow down again is called __________.
N a. rolling period N b. amplitude moment N c. inclining moment Y d. pitching period 9187: The external flotation bladder on an immersion suit should be inflated __________.
N a. before you enter the water Y b. after you enter the water N c. after one hour in the water N d. after you notice that your suit is losing buoyancy 9535: When stability of a vessel is neutral, the value of GM __________.
N a. only depends on the height of the center of gravity N b. only depends on the height of the metacenter N c. is greater when G is low Y d. is zero 9702: Which of the following is/are NOT required on Ro-Ro vessels, regarding spaces that are "specially suitable for vehicles"?
N a. The spaces shall be fitted with an approved fire or smoke detecting system. Y b. The spaces shall have designated smoking areas. N c. The spaces shall be fitted with an approved fixed fire extinguishing system. N d. All of the above