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.


322: A definite advantage of using water as a fire extinguishing agent is its characteristic of __________.


740: What is NOT a motion of the vessel?


811: Your vessel is broken down and rolling in heavy seas. You can reduce the possibility of capsizing by __________.


822: When electrical equipment is involved in a fire, the stream of dry chemicals should be __________.

    Y a. aimed at the source of the flames
    N b. fogged above the equipment
    N c. shot off a flat surface onto the flames
    N d. used to shield against electrical shock

871: The bilge pump on a fishing vessel __________.

    Y a. must be fixed if the vessel exceeds 12 meters in length
    N b. may be used as a fire pump
    N c. must be portable if there are more than 4 watertight compartments
    N d. must be capable of pumping at least 450 gpm

1031: What is the major function of the deck water seal in an inert gas system?

    N a. Relieves excessive pressures from the system.
    Y b. Isolates hazardous areas from nonhazardous areas.
    N c. Prevents the flow of inert gas into closed or isolated tanks.
    N d. Removes any leftover water or soot after the gas has been scrubbed.

1084: On small passenger vessels, what type of devices are required at both the tank and engine connections of all internal combustion engine fuel lines?

    N a. Clean out plates
    N b. Fuel gauges
    N c. Drain valves
    Y d. Shut-off valves

1151: Treatment of sunstroke consists principally of __________.

    Y a. cooling, removing to shaded area, and lying down
    N b. bathing with rubbing alcohol
    N c. drinking ice water
    N d. All of the above

1215: According to the regulations for small passenger vessels, fuses and circuit breakers are used in electrical circuits to __________.

    N a. keep equipment from shutting off unexpectedly
    N b. prevent voltage fluctuations
    Y c. keep the circuit from becoming overloaded or overheated
    N d. make the operator inspect his wiring periodically after the fuses blow

1445: When instructing a crew member concerning the right way to lift a weight, you would instruct him to __________.

    N a. arch the back to add strength to the muscles
    Y b. bend his knees and lift with his legs
    N c. bend his back and stoop
    N d. bend his back and stoop with arms straight

1496: Your vessel has been holed in #1 hold and partially flooded. The hole is plugged against further flooding. In calculating the effect of the flooding on your transverse stability, you should use which method?

    N a. Compartment standard method
    N b. Lost buoyancy method
    N c. Factor of subdivision method
    Y d. Added weight method

1502: A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in __________.

    N a. generators
    Y b. oil drums
    N c. the bridge controls
    N d. combustible metals

1524: A U.S. merchant vessel in ocean service is NOT subject to the requirements of Annex V to MARPOL 73/78 __________.

    N a. outside of 25 nautical miles from nearest land
    N b. outside of the navigable waters of the United States
    N c. in the waters of those countries not signatory to MARPOL
    Y d. A U.S. vessel in ocean service is ALWAYS subject to MARPOL.

1705: How does an inert gas system on a tanker function to prevent explosions in cargo tanks?

    N a. De-energizes the "charged mist" effect.
    N b. Maintains a positive pressure on the vent header to cool the flammable vapors.
    N c. Inert gas filters out the flammable vapors from the cargo tank spaces.
    Y d. Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit.

1775: You are inspecting the nonmetallic oil transfer hoses on the vessel you operate. The maximum allowable pressure of the hose is 70 psi. Your inspection confirms the hose did not burst, bulge, leak or abnormally distort under the required static liquid pressure of __________.

    N a. 70 psi
    Y b. 105 psi
    N c. 140 psi
    N d. 210 psi

1828: A gas-free certificate would usually be issued by a(n) __________.

    N a. ABS marine surveyor
    Y b. certified marine chemist
    N c. port engineer
    N d. Coast Guard marine inspector

1996: You have 240 tons of below deck tonnage. There is no liquid mud aboard. If you have 360 tons of cargo above deck with a VCG above the deck of 2.9 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. 1.35 feet
    N b. 1.86 feet
    N c. 2.56 feet
    Y d. 3.60 feet

2044: INTERNATIONAL AND INLAND You are under sail making 5 knots. The apparent wind is broad on the port beam at 10 knots. You see another sailing vessel dead ahead on a meeting course. What action is correct?

    N a. Both vessels must maneuver to avoid collision.
    Y b. You must keep out of the way of the other vessel.
    N c. Only the other vessel must maneuver to avoid collision.
    N d. You are only required to maneuver if collision cannot be avoided by maneuver of the other vessel.

2146: Aboard damaged vessels, the MOST important consideration is preserving __________.

    N a. bilge pumping capacity
    Y b. reserve buoyancy
    N c. level attitude
    N d. instability

2147: Each life preserver must be readily accessible to the person for whom it is intended while he or she is __________.

    N a. at work, only
    N b. in his or her berthing area, only
    Y c. BOTH at work and in his or her berthing area
    N d. None of the above

2198: Which statement is TRUE concerning a sailing vessel with the sails properly trimmed?

    N a. The more the sails are sheeted in, the greater your speed will be when sailing downwind.
    N b. As the sails are sheeted in, the vessel will heel less when close hauled.
    N c. As the sails are sheeted in on a close hauled course, speed will increase as the side forces on the vessel decrease.
    Y d. Sheeting in the sails will allow the vessel to sail closer to the wind but will decrease speed.

2257: The survival craft's engine is fueled with __________.

    N a. kerosene
    N b. unleaded gasoline
    Y c. diesel oil
    N d. liquefied gas

2275: INTERNATIONAL AND INLAND Your 18-meter vessel is propelled by sail and power. What action is required when the engine is stopped?

    N a. Display a black diamond shape forward.
    Y b. Remove the black cone shape from forward.
    N c. Remove the black balls (one at the masthead and one on each spreader).
    N d. Display a black cylindrical shape at the masthead.

2366: What type of vent is required on a barge transporting No. 6 fuel oil?

    Y a. Gooseneck vents fitted with flame screens
    N b. Pressure-vacuum
    N c. Branch vent line
    N d. Vent header

2432: You are loading propanolamine and spill a small quantity on deck. According to the Chemical Data Guide, you would expect its odor to be __________.

    N a. sweet
    N b. similar to turpentine
    Y c. fishy
    N d. similar to ammonia

2570: What is NOT a requirement of the reinspection for a tank barge with a certificate of inspection valid for two years?

    Y a. The reinspection will be made between the fourteenth and sixteenth months.
    N b. The inspector shall examine all accessible parts of the vessels's hull.
    N c. The inspector shall examine the vessel's machinery as well as equipment.
    N d. The scope of the reinspection shall be the same as for the inspection for certification, but in less detail.

2646: How many B-II fire extinguishers must be in the machinery space of a 175-foot long fishing vessel propelled by engines with 3200 brake horsepower?

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

2874: The sailing drafts are: FWD 22'-06", AFT 23'-06" and the GM is 3.3 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book, to determine the available righting arm at 22° inclination.

    N a. 1.2 feet
    Y b. 1.8 feet
    N c. 2.4 feet
    N d. 3.0 feet

2914: The sailing drafts are: FWD 25'-03", AFT 26'-03" and the GM is 3.5 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book, to determine the available righting arm at 25° inclination.

    N a. 0.8 foot
    N b. 1.4 feet
    Y c. 2.0 feet
    N d. 2.6 feet

3052: Which statement is TRUE concerning work vests on a small passenger vessel?

    N a. They may be worn during drills
    N b. They may be substituted for up to 10% of the required life jackets on board
    N c. They need not be an approved type
    Y d. They must be stowed separately from approved life jackets

3135: While the DEEP DRILLER is operating loaded as shown in Sample Load Form #4 (Drilling), casing is accidentally dropped over the port side. If the port forward inclination is slowly increasing, which tank is probably damaged?

    Y a. 1P
    N b. 2P
    N c. 1S
    N d. 3P

3186: Using a sea anchor will __________.

    Y a. reduce the drift rate of the liferaft
    N b. keep the liferaft from turning over
    N c. aid in recovering the liferaft
    N d. increase your visibility

3270: Which portable fire extinguisher is required just outside the exit of the propulsion machinery space of a 75-ton passenger vessel?

    N a. 2-1/2 gallon foam extinguisher
    Y b. 15 lb. CO2 extinguisher
    N c. 2 lb. dry chemical extinguisher
    N d. None of the above

3296: Which statement is TRUE concerning fuel vapors on a vessel?

    Y a. Fuel vapors gather in the lowest portions of the vessel.
    N b. Fuel vapors can only be ignited by an open flame.
    N c. Vent outlets should be located above the level of the carburetor air intake.
    N d. None of the above

3322: If your vessel is certificated to carry 10 persons, including both adults and children, how many life jackets are you required to carry on board? (small passenger vessel regulations)

    N a. 11 adult
    Y b. 10 adult and 1 child
    N c. 10 adult and 5 child
    N d. 10 adult

3350: Which statement is TRUE concerning the number of portable fire extinguishers required at the operating station of a small passenger vessel? (small passenger vessel regulations)

    N a. None are required.
    Y b. One B-I extinguisher is required.
    N c. One B-II extinguisher is required.
    N d. Two B-I extinguishers are required.

3464: The SS AMERICAN MARINER is ready to load the cargo listed. There is already 3175 tons of cargo on board with a KG of 25.8 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-0132

    Y a. KG 26.8 feet
    N b. KG 27.3 feet
    N c. KG 28.2 feet
    N d. KG 28.5 feet

3487: Generally, what is used to inflate liferafts?

    Y a. non-toxic inert gas
    N b. Oxygen
    N c. Hydrogen
    N d. Carbon monoxide

3528: 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-0137

    N a. 271.2 ft
    N b. 288.8 ft
    Y c. 294.4 ft
    N d. 305.3 ft

3540: How should the letter "R" be pronounced when spoken on the radiotelephone?

    Y a. ROW ME OH
    N b. AR AH
    N c. ROA MA O
    N d. AR EE

3669: The free surface correction depends upon the dimensions of the surface of the free liquid and the __________.

    N a. volume of liquid in the tank
    Y b. displacement of the vessel
    N c. location of the tank in the vessel
    N d. height of the center of gravity of the vessel

4058: When the owner or Master inspects his/her towing vessel before embarking on a voyage of more than 24 hours, he/she must check all terminal gear EXCEPT ___________ .

    N a. the connection of the bridle and towing pendant
    N b. chafing gear
    Y c. quick release towing hook and control system, to see that it operates properly
    N d. the winch brake, if installed

4086: What signal flag is the "Pilot Flag" ("I have a pilot on board")?

    N a. "P"
    N b. "C"
    Y c. "H"
    N d. "Z"

4110: As Master of an inspected small passenger vessel, you have a question regarding a proposed modification to a watertight bulkhead. In which subchapter of title 46 of the Code of Federal Regulations would you find the answer?

    N a. Subchapter W
    Y b. Subchapter T
    N c. Subchapter I
    N d. Subchapter E

4363: Scouring is the result of __________.

    Y a. interruption of the normal current flow by the footing
    N b. elevating in mud-slide zones
    N c. penetrating rapidly through a hard crust into weaker soils
    N d. extracting legs from soils with high cohesion

4745: While loaded as shown in the COASTAL DRILLER sample load form #3 (drilling), all of the casing is discharged. What is the change in LCG?

    N a. 1.98 feet forward
    N b. 1.95 feet forward
    Y c. 0.02 foot forward
    N d. 0.02 foot aft

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

5644: You are operating an ocean-going vessel of 322 gross tons. If your vessel does NOT have an oily-water separator then she must have a fixed piping system to discharge oily ballast to a shore facility. This system must include __________.

    N a. containment capacity for at least 5 gallons at the tank vents
    Y b. a means to stop each pump near the discharge outlet
    N c. at least two pumps that may be put in line
    N d. at least two outlets accessible from the weather deck

5961: A CO2 extinguisher on a MODU which has lost 10% of its charge must be __________.

    N a. used at the earliest opportunity
    N b. hydro-tested
    Y c. recharged
    N d. weighed again in one month

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

6127: On offshore drilling units, the minimum number of persons required to be trained in the use of fireman's outfits is __________.

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

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

6274: You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed __________.

    N a. at the main body of the fire
    N b. to bank off a bulkhead onto the fire
    N c. over the top of the fire
    Y d. at the seat of the fire, starting at the near edge

6492: The SS AMERICAN MARINER has drafts of: FWD 16'-10", AFT 19'-04". Use the white pages of the Stability Data Reference Book to determine the drafts if you ballast the forepeak with 73 tons of seawater.

    Y a. FWD 17'-05.8", AFT 18'-10.9"
    N b. FWD 17'-06.2", AFT 18'-10.4"
    N c. FWD 17'-06.8", AFT 18'-09.8"
    N d. FWD 17'-07.4", AFT 18'-09.2"

6681: On a MODU, a door that is required to be marked "KEEP CLOSED" is designed to __________.

    N a. prevent the passage of flammable gases
    N b. prevent the passage of poisonous vapors
    N c. delay the spread of heat and flames
    Y d. maintain watertight integrity

7057: Symptoms of sea sickness include __________.

    N a. fever and thirst
    Y b. nausea and dizziness
    N c. stomach cramps and diarrhea
    N d. reddening of skin and hives

8186: Your drafts are: FWD 16'-02", AFT 20'-08". Use the blue pages of the Stability Data Reference Book to determine the MT1.

    N a. 920 foot-tons
    N b. 935 foot-tons
    N c. 960 foot-tons
    Y d. 980 foot-tons

8275: In a wire rope mooring system, the fairlead sheave should be a minimum of __________.

    N a. 10-18 times the diameter of the wire rope
    Y b. 18-36 times the diameter of the wire rope
    N c. 36-50 times the diameter of the wire rope
    N d. 50-75 times the diameter of the wire rope

8903: The most effective first aid treatment for chemical burns is to immediately __________.

    N a. apply ointment to the burned area
    Y b. flood the affected area with water
    N c. wrap the burn with sterile dressing
    N d. apply an ice pack to the burned area

9453: At all angles of inclination, the metacenter is __________.

    Y a. vertically above the center of buoyancy
    N b. vertically above the center of gravity
    N c. at the intersection of the upright vertical centerline and the line of action of the buoyant force
    N d. at the geometric center of the underwater volume