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.


44: The spread of fire is prevented by __________.


57: The minimum concentration of a vapor in air which can form an explosive mixture is called the __________.


391: Foam is a very effective smothering agent and __________.


426: A 2,000 GT tankship is required to carry __________.

    N a. emergency outfits only on an international voyage
    N b. one oxygen breathing apparatus with enough lifeline to reach from the open deck to any part of the tanks
    Y c. two self-contained breathing apparati
    N d. two canister type gas masks if such vessel is authorized to carry grade A, B, C or D liquids

503: Your vessel has lifeboats on both sides. Lifeboat No. 2 is located __________.

    N a. forward of lifeboat No. 4 on the starboard side
    Y b. forward of lifeboat No. 4 on the port side
    N c. aft of lifeboat No. 1 on the starboard side
    N d. All of the above

526: Motor-propelled lifeboats are required to have sufficient fuel to operate continuously at 6 knots for how many hours?

    N a. 6
    N b. 12
    N c. 18
    Y d. 24

531: A CO2 portable extinguisher is annually checked by __________.

    N a. reading the gage pressure
    Y b. weighing the extinguisher
    N c. discharging a small amount of CO2
    N d. seeing if the seal has been broken

603: The painter which is to be attached to the thwart of a lifeboat should __________.

    N a. be fitted at the end with an approved safety shackle
    N b. have a long eye splice at the end, and a shackle and pin should be attached to the painter with a lanyard
    Y c. have a long eye splice at the end, and a hardwood toggle should be attached to the thwart with a lanyard
    N d. be fitted with a swivel and quick-releasing pelican hook

625: When the Captain of the Port or Officer in Charge, Marine Inspection issues an order of suspension to the operator of a vessel concerning oil transfer operations, it __________.

    N a. is always effective immediately
    Y b. includes a statement of each condition requiring corrective action
    N c. must be in writing before it takes effect
    N d. All of the above

754: "PAN-PAN" repeated three times over the radiotelephone indicates which type of message will follow?

    N a. Distress
    N b. Safety
    N c. All clear
    Y d. Urgency

799: Lines or gear NOT in use should be __________.

    N a. conspicuously marked
    N b. stowed anywhere
    N c. left on deck
    Y d. secured or stowed out of the way

952: Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?

    N a. Check the tag to see when the extinguisher was last charged.
    N b. Release a small amount of CO2; if the CO2 discharges, the extinguisher is acceptable.
    Y c. Weigh the extinguisher and compare the weight against that stamped on the valve.
    N d. Recharge the extinguisher at least once each year.

1022: When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher, the stream should be directed at the __________.

    Y a. base of the flames, moving the horn from side to side, following the flames upward as they diminish
    N b. top of the flaming area, moving the horn from side to side, following the flames downward as they diminish
    N c. center of the flaming area, moving the horn vertically from top to bottom
    N d. bottom of the flaming area, moving the horn vertically to the top following the flames upward as they diminish

1071: Aboard small passenger vessels, which material may be used for diesel fuel line installations but not for gasoline fuel lines?

    N a. Annealed copper tubing
    N b. Nickel-copper tubing
    N c. Copper-nickel tubing
    Y d. Seamless steel pipe or tubing

1220: Lines passed around the falls to hold the boat while passengers are boarding are __________.

    N a. life lines
    Y b. frapping lines
    N c. tricing lines
    N d. tripping lines

1399: How should longitude 116°24.3'W be written when preparing an AMVER report?

    N a. 116°24.3W
    Y b. 11624W
    N c. 116.4W
    N d. 116W

1419: Your vessel is listing 4° to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by the head with one foot of freeboard at the bow. Which action should you take FIRST?

    N a. Press up the slack NO.1 starboard double bottom tank.
    Y b. Pump out the forepeak tank.
    N c. Eliminate the water in the 'tween decks aft.
    N d. Jettison stores out of the paint locker in the fo'c'sle.

1548: You have abandoned your vessel. You are in a liferaft and have cleared away from your vessel. One of your FIRST actions should be to __________.

    N a. take measures to maintain morale
    N b. prepare and use radio equipment
    N c. identify the person in charge of liferaft
    Y d. search for survivors

1591: You discharge garbage overboard at sea. When recording your vessel's position as required, you must include __________.

    N a. latitude, longitude, and approximate depth of water
    Y b. latitude, longitude, and estimated distance from shore
    N c. latitude and longitude only
    N d. latitude, longitude, course, speed, and a copy of that days noon position slip

1642: The Master or person in charge on a MODU shall insure that line throwing equipment is not operated __________.

    N a. during a rain storm
    Y b. in an explosive atmosphere
    N c. near a lifeboat station
    N d. by other than senior rig personnel

1667: A shipmate suffers a heart attack and stops breathing. You must __________.

    N a. immediately give a stimulant, by force if necessary
    N b. make the victim comfortable in a bunk
    Y c. immediately start CPR
    N d. administer oxygen

1743: Introducing inert gas into a tank already inert with the object of further reducing the oxygen or hydrocarbon content to prevent combustion if air enters the tank is called __________.

    Y a. purging
    N b. gas freeing
    N c. gas dispersion
    N d. bonding

1786: Which statement concerning reserve sources of energy for GMDSS is FALSE?

    N a. While the ship is at sea, there must be available at all times a supply of electrical energy sufficient to operate the radio installations and to charge any batteries used as part of a reserve source of energy.
    Y b. Both the VHF and MF/HF installations must be simultaneously supplied.
    N c. A means of ensuring a continuous supply of electrical power must be provided to all GMDSS equipment that could be affected by an interruption in power.
    N d. If a uninterrupted power supply or equivalent is used to supply power to the ship's GPS receiver or other source of positional information, a means must be provided to ensure the continuous supply of the information in the event of a failure to the ship's main or emergency source of power.

1812: The sails are properly set and trimmed. As a vessel heads up from a beam reach to close hauled the __________.

    Y a. apparent wind moves forward
    N b. heeling moment decreases
    N c. side slip decreases
    N d. speed increases

1871: If the cause of a sudden severe list is negative initial stability, counterflooding into empty tanks may __________.

    N a. increase the righting moment
    N b. cause an increase in the righting arm
    N c. bring the vessel to an upright equilibrium position
    Y d. cause the vessel to flop to a greater angle

2110: You have 650 tons of below deck tonnage including liquid mud. Your existing deck cargo is 140 tons with a VCG above the deck of 2.5 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. 15 tons
    N b. 48 tons
    Y c. 83 tons
    N d. 140 tons

2329: 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-0059

    N a. Available GM 3.2 ft
    Y b. Available GM 3.9 ft
    N c. Available GM 4.8 ft
    N d. Available GM 5.3 ft

2501: The SS NORTHLAND is loaded to drafts: FWD 20'-06", AFT 24'-00". The KG is 29.6 feet. Use the salmon pages of the Stability Data Reference Book to determine the angle of list if #6 starboard tank is fully loaded with 1624 tons of salt water ballast (VCG is 36.5 feet off the centerline).

    N a. 3.4°
    N b. 4.2°
    N c. 4.9°
    Y d. 6.0°

2561: The weight of the loaded personnel carrier, when transferring personnel from a MODU with a crane, must not exceed __________.

    N a. 2/3 of the static rated load at the lift radius
    N b. 1/2 of the static rated load at the lift radius
    N c. 1/5 of the breaking strength of the hoist rope times the parts of the line used
    Y d. 1/10 of the breaking strength of the hoist rope times the parts of line used

2727: For optimum stability during jacking operations, mat ballast tanks or spud cans should be __________.

    N a. empty
    Y b. fully ballasted
    N c. partially ballasted
    N d. sealed

2952: Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil?

    N a. The loading dock
    Y b. The midpoint of the barge
    N c. Within 25 feet of the pump engine
    N d. Above the forward rake end

3011: A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have __________.

    N a. a large TCG
    Y b. a negative GM
    N c. excessive ballast
    N d. insufficient deck load

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

3221: A MODU with a displacement of 15,000 kips has a KG of 20 feet. A load of 300 kips is shifted from a VCG of 100 feet to a VCG of 10 feet. How far does the KG move?

    N a. 0.2 foot downward
    N b. 0.2 foot upward
    Y c. 1.8 feet downward
    N d. 1.8 feet upward

3265: A semisubmersible with a displacement of 20,000 tons and KG of 52 feet discharges 300 long tons of barite from P-tanks located 120 feet above the keel. Ballast added to maintain draft has a VCG of 20 feet. What is the change in KG?

    N a. 0.49 foot increase
    N b. 0.50 foot decrease
    Y c. 1.50 feet decrease
    N d. 1.80 feet decrease

3279: You have orders to drop off a barge loaded with propylene oxide at a fleet. In doing so, you must ensure that __________.

    N a. all wing voids and rakes are pumped dry before tying off the barge
    N b. the barge is moored next to the bank where it will be protected from a possible collision
    Y c. the barge is under the care of a watchman
    N d. a rake end is facing upstream to minimize the effect of current on the mooring lines

3397: A jack-up 180 feet in length with the LCF at 120 feet AFO has a draft of 8 feet at the bow and 11 feet at the stern. What is the true mean draft (draft at the center of flotation)?

    N a. 8.0 feet
    N b. 9.0 feet
    Y c. 10.0 feet
    N d. 11.0 feet

3508: Except in rare cases, it is impossible to extinguish a shipboard fire by __________.

    N a. interrupting the chain reaction
    N b. removing the heat
    N c. removing the oxygen
    Y d. removing the fuel

3512: You have sent a visual signal to an aircraft. The aircraft then flies over your position on a straight course and level altitude. What should you do?

    Y a. Repeat your signal.
    N b. Send any more signals necessary.
    N c. Change course to follow the airplane.
    N d. Prepare for a helicopter pickup.

3573: The DEEP DRILLER in transit is level at 23.0 feet draft. Strong winds are blowing from the starboard. A careful load form calculation determines that the TCG is 2.0 feet to starboard. What is the value of the wind heeling moment?

    N a. 4,339 foot-long tons
    Y b. 26,033 foot-long tons
    N c. 39,050 foot-long tons
    N d. 78,099 foot-long tons

3602: You are on a Mariner class cargo vessel. Your drafts are: FWD 22'-06", AFT 25'-06". You wish to increase the calculated GM of 4.8' to 5.9'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.)

    N a. Tanks: DB3, DB4
    N b. Tanks: DB5, DT6
    Y c. Tanks: DB2, DB5
    N d. Tanks: DB2, DB6, DB7

3728: A crew member has suffered frostbite to the toes of the right foot. Which is NOT an acceptable first aid measure?

    Y a. Rub the toes briskly.
    N b. Elevate the foot slightly.
    N c. Rewarm rapidly.
    N d. Give aspirin or other medication for pain if necessary.

3872: For an OSV not on an international voyage, an approved substitute for an impulse projected type line throwing appliance is a __________.

    N a. spring-loaded line thrower
    N b. hand thrown buoyant line
    Y c. shoulder type line throwing gun
    N d. heaving line

3950: You are picking up a conscious person that has fallen overboard. Recovery is easier if you approach with the __________.

    Y a. victim to leeward
    N b. victim to windward
    N c. wind on your port side
    N d. wind on your starboard side

4063: In the DEEP DRILLER, the longitudinal free surface correction (FSCL) is obtained from the total of the longitudinal free surface moments (FSML) by __________.

    N a. adding the LCG
    N b. subtracting the LCG
    N c. multiplying by displacement
    Y d. dividing by displacement

4594: As shown, a frapping line is indicated by number __________. (D016SA )

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

5205: Among the possible causes of unexpected constant inclination of the floating COASTAL DRILLER is __________.

    N a. consumption of on board liquids
    Y b. miscalculation of loads
    N c. liquid transfer through open valves
    N d. flooding due to hull damage

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

5693: In a storm, the leeward lines of a MODU's mooring system will __________.

    Y a. pull the unit in the same direction that the weather is pushing it
    N b. pull the unit in the opposite direction that the weather is pushing it
    N c. tend to keep the unit on its original location over the well head
    N d. affect the unit's draft and inclination as maximum mooring tensions are reached

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

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

6805: The record of tests and inspection of fire fighting equipment on board a MODU must include __________.

    Y a. the name of the person conducting the test
    N b. the weight of the charge
    N c. recommendations for the next test
    N d. All of the above

6841: What must the Master or person in charge of a MODU enter in the logbook after conducting an abandonment drill?

    N a. The sea condition at the time of the drill
    Y b. Which survival craft was used
    N c. The names of all crew members participating in the drill
    N d. The name of the lifeboatman in charge of each boat

7055: Seasickness is caused by rolling or rocking motions which affect fluids in the __________.

    N a. stomach
    N b. lower intestines
    Y c. inner ear
    N d. bladder

7061: 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

7685: The free surface corrections depend upon the dimensions of the surface of the free liquids and the __________.

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

8055: When inspecting a survival craft, you should check to make sure that the __________.

    N a. sea anchor is deployed
    N b. hydraulic starting system has been drained
    Y c. hydraulic pressure is within the specified range
    N d. steering controls are locked

8117: While in transit, the DEEP DRILLER suffers flooding in the port pump room. Both port bilge pumps are inadequate to dewater the pump room. You may supplement the bilge pumps by using the __________.

    N a. starboard ballast pump
    N b. port saltwater service pump
    Y c. port drill water pump
    N d. starboard ballast pump and crossover system

8181: When the COASTAL DRILLER is afloat, the water for the saltwater eductor system is provided by __________.

    N a. raw water tower pumps
    Y b. fire pumps
    N c. bilge pumps
    N d. mud pumps

9121: The blocking or absence of fire dampers can cause __________.

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

9553: When the height of the metacenter is greater than the height of the center of gravity, a vessel is in __________.

    Y a. stable equilibrium
    N b. neutral equilibrium
    N c. unstable equilibrium
    N d. negative equilibrium