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: Normally, the percentage of oxygen in air is __________.
N a. 16% N b. 18% Y c. 21% N d. 25% 117: Combustible gas indicators operate by drawing an air sample into the instrument __________.
Y a. over an electrically heated platinum filament N b. where it is mixed with nitrogen N c. where it is ignited by a sparking device N d. where its specific gravity is measured 288: A negative metacentric height __________.
N a. will always cause a vessel to capsize N b. always results from off-center weights Y c. should always be immediately corrected N d. All of the above are correct 303: Plastic material may be thrown overboard from a vessel which is __________.
N a. 25 miles from shore N b. 12 miles from shore N c. 3 miles from shore Y d. None of the above are correct. 340: Which statement about the free surface correction is TRUE?
N a. It is added to the uncorrected GM to arrive at the corrected available GM. Y b. It is obtained by dividing the free surface moments by 12 times the volume of displacement. N c. It is obtained by dividing the total free surface by the total vertical moments. N d. It is subtracted from the total longitudinal moments before dividing by displacement to find LCG. 585: How long must a "Declaration of Inspection" be kept on board?
N a. One week N b. Two weeks Y c. One month N d. Three months 604: To prevent loss of stability from free communication flooding you should __________.
N a. close the cross-connection valve between the off-center tanks N b. completely flood high center tanks N c. ballast double bottom wing tanks Y d. close any opening to the sea in an off-center tank 634: You are fighting a fire in a watertight compartment using hoses and salt water. Stability may be reduced because of __________.
N a. progressive downflooding N b. reduction of water in the storage tanks Y c. increase in free surface which reduces the metacentric height N d. reduction of KG to the minimum allowable 716: The required amount of water for each person in a lifeboat on an oceangoing vessel, on an international voyage, is __________.
N a. 1 liter N b. 2 liters Y c. 3 liters N d. 4 liters 832: Which statement is TRUE concerning the use of a dry chemical extinguisher?
Y a. You should direct the stream at the base of the fire. N b. You should direct the stream directly into the fire. N c. You should direct the stream at a vertical bulkhead and allow it to flow over the fire. N d. All of the above 911: You are on a supply run to an offshore drilling rig. On board is the cargo listed. What is the height above the main deck of the center of gravity of the cargo? ST-0018
N a. 3.75 feet N b. 3.02 feet Y c. 2.22 feet N d. 0.83 foot 947: When fighting an oil or gasoline fire in the bilge, which of the following should NOT be used?
N a. Foam Y b. Solid stream water nozzle N c. All-purpose nozzle N d. Carbon dioxide 1024: The firing of a red star signal may mean __________.
N a. "This is the best place to land" N b. "You are seen - assistance will be given as soon as possible" N c. "Tail block is made fast" Y d. "Slack away" 1374: Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using __________.
Y a. sealing clamps N b. repair tape N c. a tube patch N d. sail twine and vulcanizing kit 1392: Except in rare cases, it is impossible to extinguish a shipboard fire by __________.
N a. removing the heat N b. removing the oxygen Y c. removing the fuel N d. interrupting the chain reaction 1824: Most recreational sailing craft have triangular sails and are said to be __________.
N a. Gaff rigged N b. Spinnaker rigged Y c. Marconi rigged N d. Square rigged 1846: You are under sail on a close reach, and the wind is steady. While steady on course, you reef the mainsail and your speed slows. The apparent wind __________.
N a. is unchanged N b. increases and draws aft N c. increases and draws forward Y d. decreases and draws aft 1897: Which is a part of a vessel's standing rigging?
N a. Sheet Y b. Backstay N c. Topping lift N d. Downhaul 1905: What fitting on the mast works in conjunction with the shrouds to control side bend of the mast?
N a. Chainplate N b. Hound N c. Crowfoot Y d. Spreader 2018: When can routine communications be resumed on a frequency or channel on which radio silence has been imposed?
N a. After determining that the frequency or channel appears to be no longer in use N b. After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications Y c. After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded N d. Routine communications can resume if, in the Master's opinion, communications on that frequency or channel will not interfere with emergency communications. 2188: You have 6 containers of rig supplies each measuring 8'L by 4'B by 3'H and weighing 1.6 tons each. Each container is stowed on deck. What is the maximum VCG permitted of the remaining cargo if you are carrying rig water and load to maximum capacity? (D037DG )
N a. 0.4 foot N b. 0.9 foot N c. 1.75 feet Y d. 2.18 feet 2257: The survival craft's engine is fueled with __________.
N a. kerosene N b. unleaded gasoline Y c. diesel oil N d. liquefied gas 2268: To what chemical family does chlorallylene belong?
N a. Alcohols N b. Esters N c. Glycol ethers Y d. Substituted allyl 2423: A large valve, usually installed above the ram preventers, that forms a seal in the annular space between the pipe and wellbore or, if no pipe is present, on the wellbore itself is called the __________.
Y a. annular blowout preventer N b. annulus N c. accumulator N d. automatic choke 2574: 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 60° inclination.
N a. 0.9 foot Y b. 1.8 feet N c. 2.7 feet N d. 4.5 feet 2655: Support of MODU side plating is provided primarily by transverse __________.
N a. beams N b. girders Y c. frames N d. bulkheads 2805: A vessel heading NNW is on a course of __________.
N a. 274.5° N b. 292.0° N c. 315.5° Y d. 337.5° 2810: Your vessel assumes an angle of loll of 6° after loading a deck cargo. The drafts are: FWD 16'-00", AFT 16'-05". Use the information in Section 1, the blue pages, of the Stability Data Reference Book to determine the negative GM.
N a. -1.0 foot N b. -0.6 foot Y c. -0.1 foot N d. -0.02 foot 2877: In illustration D041DG, the symbol for the vertical plane midway between the fore and aft perpendiculars is __________.
N a. 2 Y b. 3 N c. 4 N d. 5 2921: A MODU is inclined at an angle of loll. In the absence of external forces, the righting arm (GZ) is __________.
N a. positive N b. negative Y c. zero N d. vertical 3219: The final inspection responsibility for seeing that a tank barge is provided with the required equipment and fittings in good and serviceable condition prior to loading cargo rests with the __________.
N a. terminal operator N b. owner of the barge Y c. tankerman or person in charge of loading N d. charterer through the Master of the towing vessel 3284: Unless the COI is endorsed for adults only, there shall be provided a number of approved life jackets suitable for children equal to at least __________. (small passenger vessel regulations)
N a. 20% of the passengers carried Y b. 10% of the total number of persons carried N c. 10% of the passengers carried N d. 20% of the total number of persons carried 3346: An inflatable liferaft is thrown into the water from a sinking vessel. Which action occurs automatically after the painter trips the CO2 bottles to inflate the raft?
Y a. The sea anchor is deployed. N b. The floor inflates. N c. If upside down, the raft will right itself. N d. The painter detaches from the raft. 3367: After a liferaft is launched, the operating cord __________.
Y a. serves as a sea painter N b. detaches automatically N c. is used to rig the boarding ladder N d. is cut immediately as it is of no further use 3458: When fighting a fire in a space containing an IMO class 1 hazardous cargo, the most effective fire fighting procedure is to __________.
N a. shut down the ventilation and exclude all air to smother the fire Y b. use water from fire hoses or a sprinkler system N c. activate the fixed CO2 firefighting system N d. use high-expansion foam 3552: You are communicating by radiotelephone using the International Code of Signals. What is the correct method of sending the group 1.3?
N a. "Wun point tree" N b. "Unaone point tercetree" Y c. "Unaone decimal terrathree" N d. "One decimal three" 3655: You can indicate that your vessel is in distress by __________.
N a. displaying a large red flag N b. displaying three black balls in a vertical line N c. sounding five or more short and rapid blasts on the whistle Y d. continuously sounding the fog whistle 3719: Symptoms of heat stroke are __________.
N a. cold and moist skin, high body temperature N b. cold and dry skin, low body temperature N c. hot and moist skin, high body temperature Y d. hot and dry skin, high body temperature 3936: After abandoning ship which action should be taken IMMEDIATELY upon entering a liferaft?
N a. Open equipment pack. N b. Issue anti-seasickness medicine. Y c. Get clear of the ship. N d. Dry the liferaft floor and inflate. 4097: The DEEP DRILLER is loaded as shown in the Sample Load Form #2 (Ballasting to Survival). What is the new height of the longitudinal metacenter if all the bulk materials are discharged?
N a. 61.34 feet N b. 62.13 feet Y c. 62.35 feet N d. 64.00 feet 4144: Which of the following statements is FALSE concerning the proper procedure in handling a fire hose?
N a. A 1½ inch hose should be deployed with a minimum of a nozzleman and hoseman. N b. The nozzleman should always hold the nozzle with one hand on top, to prevent kickback. N c. Back-up hosemen should be positioned wherever the hose makes a significant turn. Y d. The fire hose should be partially charged before deploying it from the fire station. 4341: The COASTAL DRILLER is elevated to an air gap of 25 feet in 250 feet of water. The current is 2 knots and the waves are 30 feet. The maximum leg reaction is 6,120 kips. What is the maximum wind for drilling operations?
N a. 100 knots N b. 70 knots N c. 60 knots Y d. 40 knots 4345: What information must be available to use the Allowable Wind and Wave Charts for the COASTAL DRILLER?
N a. Soil conditions N b. Overturning moment Y c. Water depth N d. Specific gravity of the sea water 5483: The idler sheave which directs and turns the anchor cable from a semisubmersible is known as the __________.
Y a. swivel fairlead N b. windlass wildcat N c. chain stopper N d. chain director 5733: Given the same water depth and mooring tension, the length of the ground cable of a 19 pound/foot wire rope mooring line in comparison to a 90 pound/foot mooring chain will be __________.
Y a. shorter N b. identical N c. longer N d. indeterminable 6627: A cutoff valve in the fire-main system of a MODU may be closed to protect the portion of the system on an exposed deck from __________.
N a. damage from crane operations N b. being used for wash down purposes N c. accidental diversion of flow to wrong location Y d. freezing 6947: Which record must be retained on board after a report of casualty to a MODU?
N a. Preventive maintenance log Y b. Storage plans N c. Oil Record Book N d. Repair record book 7651: When positive stability exists, GZ represents the __________.
N a. righting moment N b. center of gravity Y c. righting arm N d. metacentric height 7677: Reducing free surfaces has the effect of lowering the __________.
N a. uncorrected KG Y b. virtual height of the center of gravity N c. metacenter N d. metacentric height 7785: The result of multiplying a weight by a distance is a __________.
Y a. moment N b. force N c. couple N d. center of gravity location 7845: When the bypass valve of a self-contained breathing device is opened, the air flows __________.
Y a. directly to the facepiece N b. directly to the air supply bottle N c. through the regulator N d. from the bottle into the atmosphere 8215: In the piping systems of a MODU, what type of valve gives the least resistance to fluid flow when fully open?
N a. Globe valve N b. Butterfly valve Y c. Gate valve N d. Packless valve 8384: A moment of 300 ft-tons is created by a force of 15,000 tons. What is the moment arm?
N a. 50.00 feet N b. 25.00 feet N c. 0.04 foot Y d. 0.02 foot 8695: The DEEP DRILLER, at 58.0 feet draft in sea water, discharges 200 long tons. What is the new displacement?
N a. 16,263 long tons Y b. 17,642 long tons N c. 17,842 long tons N d. 18,118 long tons 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 8877: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Severe motion makes it necessary to ballast down to survival draft. It is decided to check stability at the intermediate draft of 32 feet. If the added ballast has an average VCG of 9.03 feet, and the sum of free surface moments is 56,244 foot-tons, what is the new GML?
N a. 6.23 feet N b. 5.11 feet N c. 4.86 feet Y d. 4.06 feet 9021: Aboard a vessel, dividing the sum of the longitudinal moments by the total weight yields the vessel's __________.
N a. inclining moments N b. righting moments N c. vertical moments Y d. longitudinal position of the center of gravity 9373: If heavy smoke is coming from the paint locker, the FIRST firefighting response should be to __________.
N a. release the CO2 flooding system N b. open the door to evaluate the extent of the fire N c. enter and use a portable extinguisher Y d. secure the ventilation 9507: With no environmental forces, the center of gravity of an inclined vessel is vertically aligned with the __________.
N a. longitudinal centerline N b. center of flotation N c. original vertical centerline Y d. center of buoyancy 9673: When fighting a large fire on your vessel and attacking it from ABOVE the space on fire, it is important to __________.
N a. rotate personnel, due to heat stress N b. stand erect, to avoid the heat of the deck N c. cool the deck directly above the space on fire Y d. All of the above