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.
12: The purpose of inert gas systems aboard tank vessels is to __________.
N a. allow sufficient oxygen in the tank to sustain life Y b. prevent outside air from entering the tank N c. provide increase in cargo discharge pressure N d. comply with double hull pollution prevention regulations 177: Before taking drinking water on board in the U.S. or its possessions, the responsible person from the vessel should determine that the source __________.
N a. is used by a city N b. has been treated with chlorine Y c. is approved by the Public Health Service N d. is not from surface water 180: Which is TRUE of a "stiff" vessel?
N a. It has a small GM. N b. It pitches heavily. N c. It has an unusually high center of gravity. Y d. Its period of roll is short. 321: A signal indicating Greenwich mean time would be preceded with __________.
N a. a code hoist to indicate Greenwich mean time to follow N b. the letter G N c. the letters GT Y d. the letter Z 545: The oil transfer procedures aboard a tanker transferring oil are NOT required to contain __________.
Y a. the name of each person designated as the person in charge of transfer N b. a line diagram of the vessel's oil transfer piping N c. special procedures for topping off tanks N d. a description of the deck discharge containment system 554: When using the International Code of Signals to communicate, the end of a radiotelephone transmission is indicated by the signal __________.
N a. YZ N b. CQ N c. WA Y d. AR 705: Your vessel is at a dock taking bunkers. If oil begins to flow out of a tank vent, what should you do FIRST?
N a. Open the intake valve to an adjacent tank. N b. Set out drip pans and sawdust and begin to mop up the spill. Y c. Signal the shore control point to shut down. N d. Close the valve on the tank vent line. 762: The most effective extinguishing action of dry chemical is __________.
Y a. breaking the chain reaction N b. the CO2 that is formed by heat N c. smothering N d. shielding of radiant heat 791: During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke's color will be __________.
Y a. black N b. red N c. orange N d. yellow 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 1217: Which types of portable fire extinguishers are designed for use on electrical fires?
Y a. Dry chemical and carbon dioxide N b. Foam (stored pressure) and soda-acid N c. Carbon dioxide and foam (stored pressure) N d. Dry chemical and soda-acid 1313: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 3224 tons of cargo on board with a KG of 29.8 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-0035
N a. KG 27.2 feet N b. KG 27.8 feet N c. KG 28.4 feet Y d. KG 29.0 feet 1682: Which radio call-in plan is the most prudent?
N a. There must be a designated responsible person who will be available to receive your call at anytime. Y b. There must be specific instructions for the designated responsible person to follow if your call does not come in on schedule. N c. The designated responsible person must be instructed to call the Coast Guard search and rescue authorities immediately if your call does not come in on schedule. N d. The designated responsible person should be over 18 years of age. 1729: The purpose of the deck seal in an inert gas system is to prevent __________.
Y a. flammable vapors from entering machinery space N b. flue gas escaping to atmosphere N c. inert gas escaping to atmosphere N d. air entering inert gas system 1958: You have 710 tons of below deck tonnage. There is no liquid mud aboard. If you have 150 tons of cargo above deck with a VCG above the deck of 3.1 feet, what is the maximum allowed VCG of the remainder of the deck cargo that is permitted? (See illustration D036DG, stability letter for M.V. Hudson) (D036DG )
N a. 1.84 feet N b. 2.13 feet N c. 2.43 feet Y d. 2.78 feet 2162: Which tank barges require draft marks?
N a. Tank barges over 50 GT N b. Tank barges over 100 GT N c. Notch barges over 1000 GT Y d. All tank barges 2199: Your vessel displaces 564 tons. The existing deck cargo has a center of gravity of 1.5 feet above the deck and weighs 41 tons. If you load 22 tons of ground tackle with an estimated center of gravity of 2.5 feet above the deck, what is the final height of the CG of the deck cargo?
N a. 1.62 feet Y b. 1.85 feet N c. 2.10 feet N d. 2.46 feet 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 2226: You are sailing on a close reach when a strong wind suddenly heels the vessel hard over. To reduce the heeling and yet maintain speed, you should __________.
Y a. ease the mainsheet and bear more away from the wind N b. haul in on the mainsheet and steer more towards the wind N c. haul in on the mainsheet and ease the jib sheet N d. ease all sheets and bear more into the wind 2311: What causes cavitation in a centrifugal pump?
Y a. Vapor pockets in the flow stream N b. Rough impeller surfaces N c. Worn wearing rings N d. Heavy fluid in the flow stream 2492: At sea, you are approaching a small vessel and see that it has the signal flag "P" hoisted. What should you do?
N a. Proceed on present course and speed since the vessel is stopped and making no way through the water. N b. Keep clear of the vessel because it has a diver down. N c. Attempt to call the vessel on VHF radiotelephone because someone on board requires medical assistance. Y d. Approach with caution because the vessel is a fishing vessel and its nets are fouled on an obstruction. 2879: While underway and towing an unmanned tank barge you are required to __________.
Y a. maintain a strict watch on the barge from the towing vessel N b. fly a red flag from the towing vessel N c. open the tops of all empty tanks on the barge N d. take hourly soundings of any loaded tanks on the barge 2880: You have loaded a deck cargo, and the vessel has assumed a 6° list due to negative GM. Your salt water drafts are: FWD 16'-05", AFT 16'-07". If you then load 1150 tons of cargo in the lower holds (VCG 12.0 feet) and take on 520 tons of bunkers (VCG 2.5 feet), what is the final GM? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)
Y a. 1.8 feet N b. 2.4 feet N c. 2.8 feet N d. 3.1 feet 2927: If the metacentric height is small, a floating MODU will __________.
Y a. be tender N b. have a quick and rapid motion N c. be stiff N d. yaw 3045: You are testing the external flotation bladder of an immersion suit and find it has a very slow leak. Which action should be taken?
N a. Replace the suit. N b. Replace the inflation bladder. Y c. Contact the manufacturer for repair instructions. N d. Some leakage should be expected and a topping off tube is provided; no other action is necessary. 3057: Each buoyant work vest on an OSV must be __________.
Y a. Coast Guard Approved N b. marked with the name of the unit N c. equipped with a waterlight N d. All of the above 3121: To prevent the spread of fire by conduction you should __________.
Y a. cool the bulkheads around the fire N b. remove combustibles from direct exposure N c. close all openings to the area N d. shut off all electric power 3144: On a lifeboat equipped with Rottmer-type releasing gear, turning the releasing lever releases __________.
N a. the painter N b. the after boat fall only if the boat is waterborne N c. both falls at the same time only if the boat is waterborne Y d. both falls at the same time even if the boat has not reached the water 3187: Repair of vital machinery and services on a MODU should be accomplished __________.
Y a. after control of fire, flooding, and structural repairs N b. immediately N c. after control of fire, but before control of flooding N d. after stability is restored 3204: In accordance with SOLAS, the batteries that power interior lighting in inflatable liferafts can be made to last longer by __________.
N a. unscrewing the bulb during the daylight Y b. switching the light on only when necessary N c. taking no action as there is no way on saving power N d. taking no action as they shut off automatically in daylight 3231: A lifeline must be connected to the liferaft __________.
N a. at the bow N b. at the stern N c. in the middle Y d. all around 3383: The DEEP DRILLER, at a mean draft of 45 feet, has a three-foot trim by the stern and a two-foot list to port. What is the draft at the starboard forward draft mark?
Y a. 42.5 feet N b. 44.5 feet N c. 45.5 feet N d. 47.5 feet 3406: After having thrown the liferaft and stowage container into the water, the liferaft is inflated by __________.
Y a. pulling on the painter line N b. forcing open the container which operates the CO2 N c. hitting the hydrostatic release N d. using the hand pump provided 3453: Your rescue craft is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.
N a. shifting the rudder constantly N b. moving all personnel forward and low N c. moving all personnel aft Y d. rigging a sea anchor 3590: The patrolman, while on duty on a passenger vessel, must have in his possession a(n) __________.
N a. nightstick Y b. flashlight N c. passenger list showing assigned berths N d. A-I fire extinguisher 3632: When using a handheld smoke signal in a liferaft, you should activate the signal __________.
N a. on the upwind side N b. inside the boat N c. at the stern Y d. on the downwind side 3766: The primary concern in aiding a back injury patient is __________.
N a. relieving the patient's pain by giving aspirin or stronger medication Y b. avoiding possible injury to the spinal cord by incorrect handling N c. preventing convulsions and muscle spasms caused by the pain N d. providing enough fluids to prevent dehydration 3963: Salt water ballast tank 2P on the DEEP DRILLER contains 5.0 feet of ballast. It is decided to fill the tank. What is the VCG of the added liquid?
N a. 7.5 feet N b. 10.0 feet Y c. 12.5 feet N d. 15.0 feet 4001: The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). What would be the new sum of longitudinal moments for Fuel Oil (Table 2) if the entire contents of Tank 4P are transferred to Tank 4S?
N a. 000 foot-tons N b. 3,992 foot-tons Y c. 7,984 foot-tons N d. 15,968 foot-tons 4031: The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, and FSMT = 18,732 foot-long tons. What is the metacentric height corrected for transverse free surface effects?
N a. 5.66 feet N b. 7.37 feet Y c. 8.02 feet N d. 54.82 feet 4064: If you are the Master of a towing vessel whose only working radar no longer functions, what must you do?
Y a. Notify the Captain of the Port (COTP) if you cannot repair it within 96 hours. N b. Notify the Officer in Charge of Marine Inspection (OCMI) if you cannot repair it within 48 hours. N c. Moor the vessel until it is repaired. N d. Anchor the vessel until it is repaired. 4553: What longitudinal moments are created when 379.97 kips of fresh water is placed in the COASTAL DRILLER's #1 drill water tank?
N a. 1,729 ft-kips N b. 1,739 ft-kips N c. 1,749 ft-kips Y d. 1,759 ft-kips 4734: Seawater may be used for drinking __________.
N a. if gathered during or immediately after a hard rain N b. at a maximum rate of two ounces per day Y c. under no conditions N d. after mixing with an equal quantity of fresh water 5321: While the COASTAL DRILLER is in transit at a draft of 10 feet 6 inches, a severe storm is predicted within 12 hours. VM are 541,257 ft-kips, FSML are 32,000 ft-kips and FSMT are 24,000 ft-kips. How much should the KGL be lowered to satisfy the maximum allowable KG criteria?
N a. 23.04 feet Y b. 1.96 feet N c. 0.62 foot N d. 0.00 feet 5413: The COASTAL DRILLER is loaded as shown in the Sample Load Form #2 (Preload). What would be the TCG if the preload is dumped and the cantilever and drill floor are skidded aft, placing the rotary 34 feet aft of the transom, and the drill floor is skidded 8 feet to port?
N a. -0.52 foot Y b. -0.33 foot N c. -0.17 foot N d. 0.52 foot 5631: In deballasting to survival draft because of extreme wind and wave loads, thrusters or propulsion, if available, should be used to __________.
Y a. reduce windward mooring line tensions N b. reduce leeward mooring line tensions N c. increase leeward mooring line tensions N d. maintain constant mooring line tensions 5925: When fire pumps are used for other than firefighting service, each pipe connecting the other service (except for branch lines used for deck washing) must have a __________.
N a. check valve installed in the line Y b. shut off valve at a manifold near the pump N c. quick disconnect union within ten feet of the pump N d. regulator in the line set at 125 psi 5933: Each fire hydrant must have at least one spanner and at least one __________.
Y a. hose rack or reel N b. all purpose nozzle N c. foam applicator N d. pick axe 6615: Where are self-closing doors required on a MODU?
N a. In the galley Y b. In each stair tower N c. To each sleeping room N d. To the engine room 6915: When a MODU is involved in a casualty, the cost of property damage includes __________.
Y a. the cost of labor and material to restore the property to the service condition which existed prior to the casualty N b. the loss of revenues while the unit is being repaired, up to a maximum of $50,000 N c. the damage claims awarded to individuals or companies involved in the casualty, up to a maximum of $50,000 N d. All of the above 7046: A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind __________.
N a. blows the fire back toward the vessel N b. comes over either beam N c. comes over the stern Y d. comes over the bow 7093: Normal mouth temperature is __________.
N a. 96.4°F N b. 97.5°F Y c. 98.6°F N d. 99.7°F 7121: CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when __________.
N a. the discharge valve is open N b. the control box glass is broken Y c. pressure from the control cylinders is detected N d. the control cylinders have been completely discharged 7127: Spaces protected by a fixed CO2 system must be equipped with an alarm which sounds __________.
N a. for the first 20 seconds CO2 is being released into the space Y b. for at least 20 seconds prior to release of CO2 N c. during the entire period that CO2 is being released N d. if all doors and ventilation are not secured 7587: The geometric center of the underwater volume is known as the __________.
N a. center of flotation N b. tipping center N c. center of gravity Y d. center of buoyancy 8315: The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called __________.
N a. exposure limits N b. concentration limits Y c. threshold limit values N d. substance limit values 8781: To determine the number of certificated Lifeboatmen required on a mobile offshore drilling unit, you should check the __________.
N a. load line certificate Y b. Certificate of Inspection N c. Safety of Life at Sea Certificate N d. Operations Manual 8817: A jack-up has 8 inches of trim by the stern. Calculations show that the moment required to change trim one inch (MCT1") is 500 foot-kips. To level the unit, how far must a weight of 50 kips be transferred toward the bow?
N a. 10.0 feet N b. 62.5 feet Y c. 80.0 feet N d. 100.0 feet 8875: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Excessive motion makes it necessary to ballast down to survival draft. It is decided to check the 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 margin on the maximum allowable KG?
N a. 6.23 feet N b. 5.11 feet N c. 4.86 feet Y d. 4.06 feet 9641: The carbon dioxide cylinders of a fixed fire extinguishing system may be located inside the protected space, if the quantity of CO2 required to protect that space is not more than __________.
N a. 1 long ton Y b. 300 pounds N c. 900 pounds N d. 1,500 pounds