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.


350: The most detrimental effect on initial stability is a result of liquids __________.


465: A cargo hose is marked with the __________.


516: Which toxic gas is a product of incomplete combustion, and is often present when a fire burns in a closed compartment?


569: A shaft alley divides a vessel's cargo hold into two tanks, each 25 ft. wide by 50 ft. long. Each tank is filled with salt water below the level of the shaft alley. The vessel's displacement is 6,000 tons. What is the reduction in GM due to free surface effect?

    N a. .56 foot
    N b. .58 foot
    Y c. .62 foot
    N d. .66 foot

570: On a vessel of 5,000 tons displacement there are two slack tanks of acid (SG 1.8). Each tank is 30 feet long and 20 feet wide. What is the reduction in metacentric height due to free surface with the vessel in sea water (SG 1.025)?

    N a. .11 ft
    N b. .21 ft
    Y c. .40 ft
    N d. .82 ft

830: Your vessel has a midships engine room and the cargo is concentrated in the end holds. The vessel is __________.

    N a. sagging with tensile stress on main deck
    N b. sagging with compressive stress on main deck
    Y c. hogging with tensile stress on main deck
    N d. hogging with compressive stress on main deck

876: Which person may command a lifeboat in ocean service?

    N a. Licensed deck officer
    N b. Able seaman
    N c. Certificated person
    Y d. All of the above

1100: The maximum speed of lowering for a lifeboat on gravity davits is controlled by the __________.

    N a. limit switches
    N b. emergency disconnect switch
    Y c. governor brake
    N d. position of the counterweight on the brake handle

1173: On small passenger vessels all connections to electrical conductors MUST be __________.

    Y a. made within enclosures
    N b. served and parceled with the lay, turned and wormed the other way
    N c. installed only by a licensed marine electrician
    N d. inspected annually by the Coast Guard

1321: How should the lifeboat sea painter be rigged?

    Y a. Secured to the inboard side of a forward thwart and led inboard of the falls
    N b. Spliced into the ring on the stem post
    N c. Secured by a toggle to the stem post and led outboard of the falls
    N d. Secured by a toggle around the outboard side of a forward thwart

1600: You are berthed at a cargo facility where you have just completed discharging a dangerous cargo. You must complete topside repairs involving hot work before sailing. Which of the following statements is TRUE?

    N a. You can make repairs with permission of the facility owner since you are empty and the cargo is on the facility.
    N b. The repair area must be inspected by a marine surveyor to ensure that it can be done safely.
    N c. Hot work repairs at such a facility are prohibited.
    Y d. The Captain of the Port may give specific approval to make hot work repairs.

1816: INTERNATIONAL AND INLAND Except where specifically required by the rules, a sailing vessel is NOT required to keep out of the way of a __________.

    N a. vessel engaged in fishing
    N b. vessel anchored
    Y c. power-driven pilot vessel on station
    N d. vessel setting a channel buoy

1830: Your voyage planning indicates you will arrive at a waypoint in longitude 149°16.3'E at 0947 ZT on 3 March 1988. How should this date be entered into an AMVER report?

    N a. 030947K MAR
    N b. 094703K
    Y c. 022347Z
    N d. 234703Z

1872: Your vessel displaces 641 tons. The existing deck cargo has a center of gravity of 3.6 feet above the deck and weighs 36 tons. If you load 22 tons of ground tackle with an estimated center of gravity of 2.0 feet above the deck, what is the final height of the CG of the deck cargo?

    N a. 2.33 feet
    N b. 2.55 feet
    N c. 2.77 feet
    Y d. 2.99 feet

1923: Except as provided by approved special examinations, each offshore drilling unit must be dry-docked at least once during every __________.

    N a. 12 month period
    N b. 18 month period
    Y c. 24 month period
    N d. 36 month period

1939: You have 520 tons of below deck tonnage. There is no liquid mud. If you have 160 tons of cargo above deck with a VCG above the deck of 3.2, what is the maximum allowed VCG of the remainder of the deck cargo that is permitted? (D036DG )

    N a. 1.43 feet
    Y b. 2.79 feet
    N c. 3.10 feet
    N d. 3.64 feet

2001: The person in charge of a mobile offshore drilling unit must insure that __________.

    N a. each bilge pump is operated at least once a week
    N b. all personnel are provided with work vests
    N c. whistles and general alarm bells are tested once each day
    Y d. the date and hour of each fire drill is recorded in the log

2054: Your vessel measures 126 feet (38 meters) long by 21 feet (6 meters) in beam. If the natural rolling period at a draft of 8 feet (2 meters) is 6 seconds, what is the GM?

    Y a. 2.4 feet (0.70 meters)
    N b. 2.8 feet (0.85 meters)
    N c. 3.0 feet (0.90 meters)
    N d. 3.2 feet (0.98 meters)

2219: Each buoyant work vest must be __________.

    Y a. U.S. Coast Guard approved
    N b. marked with the name of the vessel
    N c. equipped with a water light
    N d. All of the above

2223: Knowing the compass heading that is 90° to the side of a MODU will enable the operator of a survival craft to initially steer __________.

    N a. into the wind
    Y b. away in fire and smoke
    N c. directly to the standby boat
    N d. directly to the nearest land

2249: A cargo of 40 tons is to be lifted with a boom located 40 feet from the ship's centerline. The ship's displacement including the suspended cargo is 8,000 tons and the GM is 2 feet with cargo suspended. What will the list of the vessel be with the cargo suspended?

    N a. 4.9°
    N b. 5.2°
    Y c. 5.7°
    N d. 6.0°

2353: Which documents are required by GMDSS for vessels on international voyages (other than the Great Lakes)?

    N a. A copy of the IMO master plan of shore-based facilities
    N b. Station logs
    N c. 47 CFR Part 80 FCC Rules and Regulations
    Y d. All of the above

2359: An example of a grade D product is __________.

    N a. heavy fuel oil
    N b. aviation gas grade 115/145
    Y c. kerosene
    N d. commercial gasoline

2580: If your JP-5 barge has operated in saltwater for less than 1 month in the 12 month period since it was last dry-docked, when is it required to be hauled out again?

    Y a. 60 months since last dry-docking
    N b. 36 months since last dry-docking
    N c. 24 months since last dry-docking
    N d. 12 months since last dry-docking

2779: Error may be introduced into a magnetic compass by __________.

    N a. making a structural change to the vessel
    N b. a short circuit near the compass
    N c. belt buckles
    Y d. All of the above

2986: What must be mounted at a small passenger vessel's operating station for use by the Master and crew?

    Y a. Emergency Instructions
    N b. A tide table for the area
    N c. Instructions on artificial respiration
    N d. The location of the first aid kit

3001: Which statement concerning immersion suits is TRUE?

    N a. Immersion suits should be worn during routine work on deck to provide maximum protection.
    N b. After purchasing, the suit should be removed from its storage bag and hung on a hanger where readily accessible.
    Y c. Immersion suits must have a PFD light attached to the front shoulder area.
    N d. Small leaks or tears may be repaired using the repair kit packed with the suit.

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

3141: 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-0108

    N a. Available GM 4.81 ft
    N b. Available GM 4.69 ft
    N c. Available GM 4.60 ft
    Y d. Available GM 4.28 ft

3414: A rigid lifesaving device designed to support survivors in the water is a __________.

    N a. rigid liferaft
    Y b. life float
    N c. inflatable liferaft
    N d. survival capsule

3585: When a man who has fallen overboard is being picked up by a rescue boat, the boat should normally approach with the wind __________.

    N a. astern and the victim just off the bow
    N b. ahead and the victim just off the bow
    N c. just off the bow and the victim to windward
    Y d. just off the bow and the victim to leeward

3621: The DEEP DRILLER is moored in 700 feet of water. The average tension on the mooring lines is 200 kips. What is the total vertical component of chain tension?

    N a. 60.9 long tons
    N b. 472.8 long tons
    Y c. 487.2 long tons
    N d. 714.4 long tons

3660: How should the letter "W" be pronounced when spoken on the radiotelephone?

    N a. DUB A U
    Y b. WISS KEY
    N c. WI NE
    N d. WOO LF

3738: A crew member is unconscious and the face is flushed. You should __________.

    Y a. lay the crew member down with the head and shoulders slightly raised
    N b. administer a liquid stimulant
    N c. lay the crew member down with the head lower than the feet
    N d. attempt to stand the crew member upright to restore consciousness

3775: The sounding in fuel oil tank 4P on the DEEP DRILLER is 8.75 feet. What are the transverse moments for this amount of fuel?

    Y a. -17,416 ft-long tons
    N b. -874 ft-long tons
    N c. 3,992 ft-long tons
    N d. 17,416 ft-long tons

3792: The SS AMERICAN MARINER has the following drafts: FWD 08'-11.5", AFT 15'-11.5". 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-0147

    N a. 3.10 feet
    Y b. 2.45 feet
    N c. 2.00 feet
    N d. 1.50 feet

3946: Fusible-link fire dampers are operated by __________.

    N a. a mechanical arm outside the vent duct
    Y b. the heat of a fire melting the link
    N c. electrical controls on the bridge
    N d. a break-glass and pull-cable system

3953: To turn over a liferaft that is floating upside down, you should pull on the __________.

    N a. canopy
    N b. manropes
    N c. sea painter
    Y d. righting lines

3962: When should food or water be provided to survivors after boarding a liferaft?

    N a. After 12 hours
    Y b. After 24 hours
    N c. After 48 hours
    N d. Some food and water should be consumed immediately and then not until 48 hours later

3973: What are the additional vertical moments created when P-tank #4 in the DEEP DRILLER sample load form #1 (Transit) is completely filled?

    N a. 2,252 foot-tons
    Y b. 9,413 foot-tons
    N c. 11,665 foot-tons
    N d. 13,917 foot-tons

4000: On a rigid liferaft (SOLAS B pack) which is equipped with all of the required equipment you may NOT find a __________.

    N a. bailer
    N b. sponge
    N c. whistle
    Y d. fishing kit

4013: 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 the KG corrected for longitudinal free surface effects?

    N a. 53.78 feet
    N b. 54.82 feet
    Y c. 55.47 feet
    N d. 56.01 feet

4191: The DEEP DRILLER is planning to operate while loaded as shown in the Sample Load Form #3 ( Preparing to Drill). What is the margin between KGT and maximum allowable KG?

    N a. 0.66 foot
    N b. 2.58 feet
    Y c. 5.24 feet
    N d. 7.87 feet

4262: Which statement about immersion suits is TRUE?

    Y a. Prior to abandonment, the suit allows body movement such as walking, climbing a ladder and picking up small objects.
    N b. The immersion suit seals in body heat and provides protection against hypothermia for weeks.
    N c. The suit is flameproof and provides protection to the wearer while swimming through burning oil.
    N d. The wearer of the suit is severely restricted and requires twice the time to climb a ladder than without the suit

4270: 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.

5245: To maintain a high state of readiness against the possibility of damage and subsequent flooding while aboard the DEEP DRILLER, you should __________.

    N a. post a watch in the pump room
    N b. keep tanks no more than half filled
    Y c. cap sounding tubes except when in use
    N d. keep bilge pumps operating continuously

5385: While preloading, the COASTAL DRILLER has a total weight of 21,401 kips. The LM are 2,560,416 ft-kips, and the TM are -6,206 ft-kips. What is the starboard leg reaction?

    Y a. 7,099 kips
    N b. 7,134 kips
    N c. 7,151 kips
    N d. 7,203 kips

5475: The primary purpose for using stud link chain in a mooring system on a rig is the __________.

    N a. stud link is more economical
    Y b. stud keeps the chain from kinking
    N c. stud link chain is the lightest night design
    N d. stud link improves the anchor's holding power

5697: The motion that can significantly increase mooring line tension is __________.

    N a. pitch
    N b. roll
    N c. yaw
    Y d. sway

5935: The size of fire hydrant hose connections must be either 1-1/2 inches or __________.

    N a. 1 inch
    Y b. 2-1/2 inches
    N c. 3 inches
    N d. 3-1/2 inches

6047: On offshore drilling units, each fire station is required to be fitted with a hose which has a nominal length of __________.

    N a. 25 feet
    Y b. 50 feet
    N c. 75 feet
    N d. 100 feet

6123: On offshore drilling units, the minimum required number of fireman's outfits which must be carried is __________.

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

6125: What is the minimum required number of fire axes that must be carried on a mobile offshore drilling unit?

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

6491: How wide must the safety net be that is required on the unprotected perimeter of the helicopter landing deck on a MODU?

    N a. 1.0 meter
    Y b. 1.5 meters
    N c. 2.0 meters
    N d. 2.5 meters

8407: If you are unable to stop a diesel engine by any other means, you should __________.

    Y a. discharge a CO2 extinguisher in the air inlet
    N b. pull off the distributor cap
    N c. secure the jacket water
    N d. secure the starting air supply valve

8545: It is proposed to moor the DEEP DRILLER in 600 feet of water in a region in which the effective wind velocity could reach 80 knots, significant wave height could reach 30 feet, and the current could be 1.5 knots. If these conditions occurred at the same time from the bow, the total environmental force would be __________.

    N a. 620 kips
    Y b. 595 kips
    N c. 475 kips
    N d. 425 kips

8591: Prior to burning or welding on a fuel tank on a MODU, regulations require that an inspection be made. An entry in the unofficial logbook is required if this inspection is made by __________.

    N a. a marine chemist
    N b. the Officer in Charge, Marine Inspection
    Y c. the Master or person in charge of the MODU
    N d. the National Fire Protection Association

9414: Blocking open or removing fire dampers can cause __________.

    Y a. the fire to spread through the ventilation system
    N b. fixed foam systems to be ineffective
    N c. faster cooling of the fire
    N d. the accumulation of explosive gases

9593: A semisubmersible floating in sea water displaces 717,500 cubic feet. What is the displacement?

    N a. 11,211 long tons
    N b. 11,498 long tons
    N c. 19,977 long tons
    Y d. 20,500 long tons

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