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.


96: A B-III foam extinguisher contains __________.


120: The point to which your vessel's center of gravity (G) may rise and still permit the vessel to have positive stability is called the __________.


216: What is the total number of approved low-velocity spray ("water-fog") applicators required aboard a tankship?


234: What is the meaning of the flashing light signal "D0910"?

    N a. Date September 10
    Y b. Date October 9
    N c. Distance 910 miles
    N d. Longitude 9°10'

272: Fire alarm system thermostats are actuated by __________.

    N a. smoke sensors
    Y b. the difference in thermal expansion of two dissimilar metals
    N c. pressure loss due to air being heated
    N d. an electric eye which actuates when smoke interferes with the beam

313: Kapok life jackets should NOT be __________.

    N a. stowed near open flame or where smoking is permitted
    N b. used as seats, pillows, or foot rests
    N c. left on open decks
    Y d. All of the above

327: The maneuvering information required to be posted in the wheelhouse must be based on certain conditions. Which of the following is NOT one of these conditions?

    N a. The hull must be clean.
    N b. There must be calm weather-wind 10 knots or less and a calm sea.
    N c. There must be no current.
    Y d. The depth of the water must be at least one and one-half times the draft.

483: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 4184 tons of cargo on board with a KG of 27.8 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-0008

    Y a. KG 25.8 feet
    N b. KG 26.6 feet
    N c. KG 27.2 feet
    N d. KG 28.0 feet

502: Penetrations and openings in watertight bulkheads in a small passenger vessel less than 100 gross tons must __________.

    N a. be kept as high and as far inboard as possible
    N b. not contain sluice valves that allow water to flow freely from one watertight compartment to another
    N c. have some means to make them watertight
    Y d. All of the above

582: Extra chemicals for producing chemical foam should be stored __________.

    N a. in a freezer
    Y b. in a cool dry place
    N c. at a temperature not less than 80°F
    N d. in open bins

797: Which statement about the hospital space on a cargo ship is TRUE?

    N a. The hospital may be used for disciplinary confinement if it is not being used for treatment.
    N b. The hospital space must have both a bathtub and shower.
    N c. A hospital is required on all vessels with a crew of 12 or more if it makes overnight voyages.
    Y d. If a ship has a crew of forty-five who do not have their own room, the hospital must have four berths.

815: Applications for waivers of any requirements of the regulations for oil transfer operations must be submitted __________.

    N a. the day before the operations
    N b. 5 days before the operations
    N c. 10 days before the operations
    Y d. 30 days before the operations

906: Inflatable liferafts shall be serviced at an approved servicing facility every 12 months or not later than the next vessel inspection for certification. However, the total elapsed time between servicing cannot exceed __________.

    N a. 12 months
    N b. 15 months
    Y c. 17 months
    N d. 18 months

1038: You are piloting a vessel, which is required to have a radiotelephone, on the navigable waters of the United States. You must __________.

    N a. maintain a listening watch and communicate in English
    N b. use the bridge-to-bridge VHF-FM designated frequency only to exchange navigational information or necessary tests
    N c. have on board an operator who holds a restricted radiotelephone operator permit or higher license, as well as a FCC ship station license
    Y d. All of the above

1127: Compared to the amount of concentrated foam liquid used, the amount of low expansion mechanical foam produced is __________.

    N a. 97 times greater
    N b. 94 times greater
    Y c. 10 times greater
    N d. 2 times greater

1153: According to 46 CFR Subchapter T, rigid plastic and other nonmetallic piping materials __________.

    N a. may replace metal pipe or tubing in any installation
    N b. may not be used on inspected vessels
    Y c. may only be used in non-vital systems
    N d. are preferable to steel pipe

1320: Fire extinguishers on inspected vessels are numbered by size I through V, with I being __________.

    N a. used for electrical fires only
    Y b. the smallest
    N c. the most accessible
    N d. the most effective

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

1580: Which statement is TRUE concerning the placard entitled "Discharge of Oil Prohibited"?

    N a. It is required on all vessels.
    N b. It is only required in the wheelhouse.
    Y c. It may be located at the bilge and ballast pump control station.
    N d. All of the above

1582: You are off the coast of South Africa, when a seaman is injured. What indicator should be used in a message requesting medical advice from a South African station?

    N a. DH MEDICO
    N b. XXX RADIOMEDICAL
    N c. MEDRAD
    Y d. PORT HEALTH

1598: On board a small passenger vessel connections to electric conductors MUST be __________.

    Y a. made within enclosures
    N b. served and parceled
    N c. installed only by a licensed marine electrician
    N d. Be inspected annually

1598: On board a small passenger vessel connections to electric conductors MUST be __________.

    Y a. made within enclosures
    N b. served and parceled
    N c. installed only by a licensed marine electrician
    N d. Be inspected annually

1618: Which characteristic of Halon is a disadvantage when it is used as a fire extinguishing medium?

    N a. Leaves a residue
    Y b. Cost, relative to other agents
    N c. Breaks down while under prolonged storage
    N d. Conducts electricity

1679: You are on a 92 foot fishing vessel with 35 individuals on board. Which one of the following items are you NOT required to have on board?

    Y a. Gyro compass
    N b. Magnetic compass
    N c. Electronic position fixing device
    N d. VHF radiotelephone

1840: Your voyage planning indicates you will arrive at a waypoint in longitude 149°16.3'W at 0947 ZT on 3 March 1988. How should this date be entered into an AMVER report?

    N a. 030947W
    Y b. 031947Z
    N c. 031947 88
    N d. 03MAR1947Z

1848: Your vessel displaces 477 tons and measures 116'L x 31'B. You ship a large wave on the after deck. What is the reduction in GM due to free surface before the water drains overboard, if the after deck measures 54'L x 31'B and the weight of the water is 51.5 tons?

    N a. 6.43 feet
    N b. 6.75 feet
    N c. 6.99 feet
    Y d. 7.25 feet

1902: Which task is NOT the responsibility of the GMDSS Radio Operator?

    N a. Inspecting and cleaning the SART's container, and clearing the immediate storage area of any debris or obstacles.
    Y b. Measuring the SART's transmitted frequency.
    N c. Placing the SART in the test mode and verifying that the nearby PPI shows concentric circles.
    N d. Ensuring the SART's batteries are replaced before their expiration date.

1913: The SS AMERICAN MARINER has the following drafts: FWD 8'-04", AFT 15'-08". Upon completion of loading and bunkering the items listed will be on board. Use the white pages of The Stability Data Reference Book to determine the minimum GM required to meet a one compartment standard. ST-0047

    Y a. 1.77 feet
    N b. 1.91 feet
    N c. 2.09 feet
    N d. 2.21 feet

1926: A "reaching" course is one in which the wind __________.

    N a. comes directly over the bow
    N b. comes directly over the stern
    Y c. comes over an area extending from broad on the bow to the quarter
    N d. has no effect on the vessel

1983: What is required in addition to the heat, fuel, and oxygen of the fire triangle to have a fire?

    N a. Electricity
    Y b. Chain reaction
    N c. Pressure
    N d. Smoke

1987: When a fire drill is conducted on a mobile offshore drilling unit, the designated person in charge must ensure that __________.

    Y a. all personnel report to their stations
    N b. each hose is brought to full pressure at the nozzle
    N c. at least three portable extinguishers are activated
    N d. All of the above

2020: Free communication will adversely affect transverse stability only when the flooded space is __________.

    Y a. off-center
    N b. on the centerline
    N c. completely flooded
    N d. open to the sea above and below the waterline

2026: Which statement is TRUE concerning the gooseneck?

    N a. It is a sailing maneuver which brings the vessel's head through the wind.
    Y b. It connects the boom to the mast and allows the boom to swing freely.
    N c. It is a sailing condition where there is a loss of air flow over the sails.
    N d. None of the above

2077: BOTH INTERNATIONAL AND INLAND You are proceeding under sail with the auxiliary engine running and the propeller engaged. Which statement is TRUE?

    N a. If most of the propelling power comes from the sails, your vessel is considered a sailing vessel.
    N b. You must display a red light over a green light at the masthead.
    Y c. In fog you must sound one prolonged blast at two-minute intervals when making way.
    N d. By day, you must display a black diamond shape forward.

2268: To what chemical family does chlorallylene belong?

    N a. Alcohols
    N b. Esters
    N c. Glycol ethers
    Y d. Substituted allyl

2464: The SS AMERICAN MARINER has the liquid loading shown. Use the white pages of The Stability Data Reference Book to determine the KG of the liquid load. ST-0064

    N a. 3.9 feet
    Y b. 4.3 feet
    N c. 4.7 feet
    N d. 5.1 feet

2811: A vessel heading SW is on a course of __________.

    N a. 202.5°
    Y b. 225.0°
    N c. 247.5°
    N d. 270.0°

3040: A vessel's drafts are: FWD 19'-00", AFT 21'-10". How much more cargo can be loaded to have the vessel down to the freeboard draft? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book)

    Y a. 4819 tons
    N b. 4982 tons
    N c. 5012 tons
    N d. 5099 tons

3101: Adding the transverse free surface correction to the uncorrected height of the center of gravity of a MODU yields __________.

    N a. FSCT
    N b. KG
    Y c. KGT
    N d. GMT

3314: Which device is required to be installed under the carburetor of a gasoline engine? (small passenger vessel regulations)

    N a. Box of sawdust
    Y b. Drip collector
    N c. Vent
    N d. Flame arrestor ONLY

3387: A semisubmersible records the following drafts: Port Forward 64'-09"; Port Aft 68'-09"; Starboard Forward 59'-09"; Starboard Aft 63'-09". What is the mean draft?

    Y a. 64.25 feet
    N b. 64.40 feet
    N c. 64.75 feet
    N d. 64.90 feet

3451: As shown, number 1 operates the __________. (D011SA )

    Y a. Fleming gear
    N b. McCluny hook
    N c. sea painter
    N d. releasing gear

3566: The normal equipment of every rescue boat shall include __________.

    N a. buoyant oars
    N b. one 50 meter line
    N c. one first aid kit
    Y d. All of the above

3849: The capacity of any liferaft on board a vessel can be determined by __________.

    N a. examining the Certificate of Inspection
    Y b. examining the plate on the outside of the raft container
    N c. referring to the Muster List ("Station Bill")
    N d. referring to the shipping articles

3921: The DEEP DRILLER, at a draft of 60 feet, has -3,600 ft-tons of transverse moments. How much ballast should be transferred between tanks 10P and 10S to level the unit in list?

    Y a. 25.1 long tons
    N b. 50.2 long tons
    N c. 62.8 long tons
    N d. 252.1 long tons

3952: If an inflatable liferaft is overturned, it may be righted by __________.

    N a. filling the stabilizers on one side with water
    N b. releasing the CO2 cylinder
    N c. pushing up from under one end
    Y d. standing on the inflating cylinder and pulling on the straps on the underside of the raft

3982: In the illustration shown, the external lifelines are shown as item number __________. (D014SA )

    N a. 1
    N b. 12
    Y c. 17
    N d. 19

4038: Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT ____________ .

    Y a. start the mechanical ventilation system for the engine room
    N b. operate the fuel shut-off for the engine room
    N c. operate all fire extinguishing equipment aboard the vessel on board the vessel, including starting the fire pump
    N d. All of the above

4178: 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-0156

    N a. 229.8 ft
    N b. 234.3 ft
    N c. 244.6 ft
    Y d. 253.5 ft

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

4551: What are the transverse moments for 10.5 feet of sea water in preload tank #2 for the COASTAL DRILLER?

    N a. 15,044 kips
    Y b. 12,123 kips
    N c. 5,468 kips
    N d. 2,732 kips

5901: With a rig in tow, there is immediate danger to the tug in the event of the __________.

    Y a. tug losing power
    N b. tow line parting
    N c. bridle twisting
    N d. rig broaching

6031: On a MODU, a fire drill shall be conducted once every __________.

    Y a. week
    N b. month
    N c. crew change
    N d. other week

6257: If there are a number of survivors in the water after abandoning a MODU, they should __________.

    N a. tie themselves to the unit so they won't drift with the current
    Y b. form a small circular group to create a warmer pocket of water in the center of the circle
    N c. send the strongest swimmer to shore for assistance
    N d. form a raft by lashing their life preservers together

6455: Most drill ships and barges have a walled opening below the derrick, open to the water's surface and through which various drilling tools can pass down to the sea floor called a __________.

    Y a. moon pool
    N b. spider deck opening
    N c. pontoon
    N d. keyway

6641: On a MODU, how many ring buoys are required to have a buoyant line attached?

    N a. One ring life buoy
    Y b. One ring life buoy on each side of the MODU
    N c. Three ring life buoys
    N d. Two ring life buoys on each side of the MODU

8131: The COASTAL DRILLER is loaded as shown in Sample Load Form #3 (Drilling). What would be the new sum of longitudinal moments for the liquid variables if the entire contents of drill water tank #17 are transferred to drill water tank #18?

    N a. 181,648 ft-kips
    Y b. 181,718 ft-kips
    N c. 187,345 ft-kips
    N d. 195,462 ft-kips

8837: A jack-up with a calculated moment to change list one inch (MCL1") of 1,200 foot-kips intends to transfer 100 kips of weight in a transverse direction. How far should the weight be transferred to change the draft on the port side from 11.5 to 11.0 feet?

    N a. 12 feet
    N b. 48 feet
    N c. 120 feet
    Y d. 144 feet

9285: A floating jack-up with displacement of 16,200 kips has its LCG 110.37 feet aft of frame zero (AF0). If 200 short tons are discharged from 120 feet AF0 and 400 short tons are discharged from 150 feet AF0, what is the new LCG?

    Y a. 108.0 feet
    N b. 109.2 feet
    N c. 110.4 feet
    N d. 115.8 feet

9611: A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that __________.

    N a. an air leak has developed in the tank
    Y b. the tank cooling system has malfunctioned
    N c. the pilot cylinder discharge valve is leaking
    N d. an excessive amount of insulation has been installed on the tank and piping