USCG Safety: Master's License

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.


28: The rescuer can best provide an airtight seal during mouth-to-mouth resuscitation by pinching the victim's nostrils and __________.


543: Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful __________.


631: You are at the helm of a ketch-rigged sailing vessel under sail on the starboard tack, close hauled, with all appropriate sails set and properly trimmed. You are instructed to "bear off quickly". To utilize your sails to assist with the turn, you should __________.


663: Stretchers are fitted in lifeboats to provide a __________.

    N a. place for people to lie down
    N b. means for rigging the sail
    Y c. place for rowers to brace their feet
    N d. suitable means for water to drain below the footings

853: When whistle signals are used for launching lifeboats, one short blast means __________.

    N a. "use the float-free method only"
    Y b. "lower all boats"
    N c. "raise all boats"
    N d. "drill is over, secure all boats"

1118: The volatility of a flammable liquid is indicated by its __________.

    N a. ignition temperature
    Y b. flash point
    N c. flammable range
    N d. conversion index

1124: Spaces containing gasoline-powered machinery or gasoline storage tanks on small passenger vessels should have ventilator ducts that extend to the bilges because __________.

    N a. air is heavier than gas fumes
    N b. oil and water mix there
    N c. it prevents air from entering or leaving the space
    Y d. Gasoline vapors are heavier than air, tend to settle in the bilges, and create an explosion hazard

1327: If you are forced to abandon ship in a liferaft, your course of action should be to __________.

    Y a. remain in the immediate vicinity
    N b. head for the nearest land
    N c. head for the closest sea-lanes
    N d. let the persons in the boat vote on what to do

1338: Regular foam can be used on all but which flammable liquid?

    N a. Motor gasoline
    N b. Jet fuel
    N c. Crude petroleum
    Y d. Alcohol

1363: Before entering the chain locker, you should __________.

    N a. have someone standing by
    N b. make sure there is sufficient air within the locker
    N c. de-energize the windlass
    Y d. All of the above

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

1423: A weight of 250 tons is loaded on your vessel 95 feet forward of the tipping center. The vessel's MT1 is 1000 ft-tons. What is the total change of trim?

    N a. 11.90 inches
    N b. 18.75 inches
    Y c. 23.75 inches
    N d. 38.01 inches

1470: If your vessel has a list to port due to negative GM and off-center weight, the first corrective measure you should take is to __________.

    N a. move port-side main-deck cargo to the starboard side
    Y b. fill the starboard double-bottom
    N c. pump water from the port double-bottom to the starboard double-bottom
    N d. pump water from the port double-bottom over the side

1832: For GMDSS, when may a compulsory vessel not be allowed to leave port?

    N a. When the vessel is in an overloaded condition
    N b. When the vessel has arranged for both duplication of equipment AND shore-based maintenance
    Y c. When the vessel has replaced a required piece of GMDSS-related equipment but its performance has not been verified or logged
    N d. When the vessel is carrying only two licensed GMDSS Radio Operators and is capable of performing all required functions

1859: The parts of the sail shown are correctly labeled EXCEPT the __________. (D003SL )

    N a. head
    N b. leach
    Y c. luff
    N d. tack

1963: How is a distress message normally initiated through INMARSAT?

    N a. All INMARSAT units have a dedicated key that can be pressed for immediate action.
    N b. By adding the word "DISTRESS" in the first line of the message's preamble
    Y c. Certain INMARSAT units have a dedicated key that can be pressed for immediate action, while other systems provide menu-driven features.
    N d. By transmitting the distress message on the U.S. Coast Guard's dedicated monitoring channel.

1999: Which channel and mode should be used when initiating a Distress alert transmission?

    N a. Channel 6 DSC
    N b. Channel 6 Radiotelephony
    N c. Channel 13 Radiotelephony and Channel 16 DSC
    Y d. Channel 70 DSC

2031: Which condition is NOT necessary for a combustible liquid to burn?

    N a. The temperature of the substance must be equal to or above its fire point.
    N b. The air must contain oxygen in sufficient quantity.
    N c. The mixture of vapors with air must be within the "explosive range."
    Y d. All of the above are necessary for a combustible liquid to burn.

2130: You have 300 tons of below deck tonnage including liquid mud. Your existing deck cargo is 180 tons with a VCG above the deck of 1.9 feet. What is the maximum additional cargo tonnage you are permitted to load? (See illustration D036DG, stability letter for M.V. Hudson.) (D036DG )

    N a. 108 tons
    N b. 124 tons
    Y c. 162 tons
    N d. 342 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

2212: In order to maintain speed while changing course from a close reach to a broad reach, the sails should be __________.

    N a. lowered
    N b. reefed
    N c. hauled in
    Y d. eased out

2216: Which statement is generally correct regarding the maintenance requirements for ships under GMDSS?

    N a. Redundancy of functions of certain equipment will partially meet this requirement.
    N b. On-board maintenance provided by a person holding a GMDSS maintainer's license will partially meet the requirements.
    N c. Shoreside maintenance and scheduled tests and inspections will partially meet this requirement.
    Y d. All of the above

2450: During transfer operations, ethyl chloride spills into the water. According to the Chemical Data Guide, the ethyl chloride will boil off if the water temperature is above __________.

    N a. 46°F
    Y b. 54°F
    N c. 60°F
    N d. 68°F

2452: Your vessel's drafts are: FWD 22'-03", AFT 22'-09"; and the KG is 23.2 feet. What is the righting moment when the vessel is inclined to 30°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 20,790 foot-tons
    N b. 22,200 foot-tons
    Y c. 25,520 foot-tons
    N d. 28,080 foot-tons

2554: How is "radio silence" imposed?

    Y a. By the On Scene Coordinator (OSC)
    N b. By the Coast Earth Station (CES) controlling the Distress communications on that frequency
    N c. It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
    N d. It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel

2582: When the height of the metacenter is the same as the height of the center of gravity, the metacentric height is equal to __________.

    N a. the height of the metacenter
    N b. the height of the center of gravity
    N c. half the height of the metacenter
    Y d. zero

2622: Liquefied flammable gas is defined as any flammable gas having a Reid vapor pressure exceeding how many pounds?

    N a. 14
    N b. 30
    Y c. 40
    N d. 50

2663: Lighter longitudinal stiffening frames on the MODU side plating are called __________.

    Y a. stringers
    N b. side frames
    N c. side stiffeners
    N d. intercostals

2674: 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 2 hold floods, the vessel will sink if the permeability exceeds what percent?

    N a. 76
    Y b. 67
    N c. 60
    N d. 52

2682: The purpose of fuses in electric wiring is to __________.

    N a. allow for cutting out branch circuits
    Y b. prevent overloading the circuits
    N c. reduce voltage to the branch circuits
    N d. permit the use of smaller wiring for lighting circuits

2748: Most covered lifeboats will right themselves after capsizing if the __________.

    Y a. passengers are strapped to their seats
    N b. fuel tanks are not less than half full
    N c. sea anchor is deployed to windward
    N d. lower ballast tanks are filled with water

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°

2950: You have loaded a deck cargo, and the vessel has assumed a 7° list due to negative GM. Your salt water drafts are: FWD 16'-00", AFT 16'-02". If you then load 1050 tons of cargo in the lower holds (VCG 11.0 feet) and take on 600 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)

    N a. 2.8 feet
    N b. 2.5 feet
    Y c. 1.9 feet
    N d. 1.5 feet

3084: All life floats and buoyant apparatus shall be clearly and legibly marked or painted with the __________. (small passenger vessel regulations)

    N a. manufacturer's price, stock number, and inspection date
    N b. vessel's name, tonnage, and horsepower
    Y c. vessel's name in 3" letters
    N d. vessel's name, and number of persons allowed, all in at least 3" inch high letters and numbers

3091: When will the float-free emergency position indicating radio beacon be activated after abandoning ship?

    Y a. Immediately after floating free
    N b. After about one hour when the salt water activates the battery
    N c. Only when keyed by the radar of another vessel
    N d. Only when daylight activates the photovoltaic cell

3140: Hatches on small passenger vessels operating on exposed waters and exposed to the weather __________.

    Y a. must be watertight
    N b. must be open at all times
    N c. need not be watertight
    N d. None of the above

3225: The SS AMERICAN MARINER arrived in port with drafts of: FWD 18'-05", AFT 20'-11". Cargo was loaded and discharged as indicated. Use sheet 2 in the white pages of the Stability Data Reference Book to determine the final drafts. ST-0114

    Y a. FWD 18'-07", AFT 20'-11"
    N b. FWD 18'-09", AFT 20'-09"
    N c. FWD 18'-11", AFT 20'-07"
    N d. FWD 19'-01", AFT 20'-05"

3250: Which statement is TRUE concerning fire hose on a small passenger vessel?

    N a. Fire hose shall be at least 3/4" outside diameter.
    N b. One length of fire hose shall be provided for every two fire hydrants.
    N c. All fittings on hoses shall be of steel or other ferrous metal.
    Y d. A length of hose with nozzle attached shall be attached to each fire hydrant at all times.

3517: What is the lightweight of the DEEP DRILLER?

    N a. 680,914 long tons
    Y b. 9,733 long tons
    N c. 5,937 long tons
    N d. 6,716 long tons

3541: The DEEP DRILLER as currently configured is limited to a maximum drilling depth of __________.

    N a. 18,400 feet
    N b. 20,600 feet
    N c. 22,800 feet
    Y d. 25,000 feet

3662: You are on a Mariner class cargo vessel. Your drafts are: FWD 24'-00", AFT 25'-08". You wish to increase the calculated GM of 3.0' to 4.1'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.)

    N a. Tanks: DB3, DT1A
    N b. Tanks: DB2, DB6, DT6
    N c. Tanks: DB 3, FB7, DT1
    Y d. Tanks: DB4, DT6

3773: What is the ullage in P-Tank #4 of the DEEP DRILLER if the weight is 75.24 long tons?

    Y a. 4.0 feet
    N b. 5.0 feet
    N c. 10.2 feet
    N d. 16.0 feet

3944: What is the most vulnerable part of the fire main system?

    N a. The fire pump
    N b. Exposed hard piping
    N c. The hydrant valve
    Y d. The fire hose

4259: Which statement about immersion suits is TRUE?

    N a. The primary color of the suit's exterior may be red, orange or yellow.
    Y b. The suit must, without assistance, turn an unconscious person's mouth clear of the water within 5 seconds.
    N c. The suit is flameproof and provides protection to a wearer swimming in burning oil.
    N d. The suit may be stored in a machinery space where the ambient temperature is 160°F.

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

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

4706: You are making a heavy lift with the jumbo boom. Your vessel displaces 7940 T. The 45-ton weight is on the pier and its center is 60' to starboard of the centerline. The head of the boom is 110' above the base line and the center of gravity of the lift when stowed on deck will be 50' above the base line. As the jumbo boom takes the strain the ship lists to 4.5°. What is the GM with the cargo stowed?

    N a. 4.82
    Y b. 4.64
    N c. 4.30
    N d. 3.97

4737: In the COASTAL DRILLER, VCG is obtained from the sum of the vertical moments by __________.

    N a. adding the sum of the weights
    N b. subtracting the sum of the weights
    N c. multiplying by the sum of the weights
    Y d. dividing by the sum of the weights

5431: The COASTAL DRILLER, loaded as shown in the Sample Load Form #4 (Storm), discharges all the bulk in the four bulk tanks. What is the new TCG?

    N a. -1.11 feet
    N b. -0.47 foot
    N c. 1.07 feet
    Y d. 1.11 feet

5435: The COASTAL DRILLER is operating with a wave clearance of about 20 feet. The out-of-level alarm sounds and the unit is found to be inclined 0.5 degree bow down. The recommended course of action is to __________.

    N a. prepare to take action in case inclination increases
    N b. jack the hull up on the bow leg
    Y c. jack the hull down on the aft two legs
    N d. transfer weight, such as drill water, toward the stern

5533: Connecting elements of a mooring system should be fabricated from __________.

    N a. cast iron
    Y b. forged steel
    N c. stainless steel
    N d. cast steel

5727: Given the same water depth and line tension, the length of the ground cable of a 90 pound/foot mooring chain compared to the length of the ground cable of a 19 pound/ft wire rope mooring line will be __________.

    N a. indeterminable
    N b. identical
    N c. shorter
    Y d. longer

6074: The SS AMERICAN MARINER is ready to sail with the load shown. Use the white pages of The Stability Data Reference Book to determine the available GM. ST-0190

    N a. Available GM 4.1 ft
    N b. Available GM 4.3 ft
    N c. Available GM 4.7 ft
    Y d. Available GM 5.1 ft

6245: On board a mobile offshore drilling unit, the key to the most rapid and effective response to a man overboard situation is __________.

    Y a. well-conducted drills
    N b. a dedicated crew
    N c. good equipment
    N d. good communication

6651: The factor of safety, based on the elastic limit of the material, for the forks used on power operated industrial trucks aboard a MODU must be at least __________.

    N a. 2 to 1
    Y b. 3 to 1
    N c. 4 to 1
    N d. 5 to 1

7321: The reception of weak radio signals may be improved by "opening up" the squelch control. What is the normal setting of the squelch control?

    Y a. Just past the point where background noise is cut off
    N b. Completely closed with the volume at the highest level
    N c. Completely open with the volume at the lowest level
    N d. None of the above

8221: What is the purpose of a vent header?

    N a. Prevents entry of water into vent systems
    N b. Prevents passage of flame into fuel tanks
    N c. Catches overflow
    Y d. Combines individual vent lines into a main

8353: What power source actuates a solenoid valve?

    N a. Air pressure
    N b. Hydraulic pressure
    Y c. Electric current
    N d. Mechanical force

8731: The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT = 18,732 foot-long tons. What is TCG?

    Y a. 0.00 feet
    N b. 1.03 feet
    N c. 2.22 feet
    N d. 3.91 feet

9435: For an upright vessel, draft is the vertical distance between the keel and the __________.

    Y a. waterline
    N b. freeboard deck
    N c. Plimsoll mark
    N d. amidships section