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.


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


55: Most minor spills of oil products are caused by __________.


93: If, for any reason, it is necessary to abandon ship while far out at sea, it is important that the crew members should __________.


239: Which statement about the free surface correction is TRUE?

    N a. It is added to GM at light drafts and subtracted at deep drafts.
    N b. It is increased if the slack tank is not on the centerline.
    N c. It is decreased if the slack tank is below the KG of the vessel.
    Y d. The correction decreases as the draft increases due to loading dry cargo.

412: To get low-velocity fog from an all-purpose nozzle, you would __________.

    N a. attach the bronze nozzle tip to the fog outlet of the nozzle
    Y b. attach an applicator to the nozzle in place of the bronze nozzle tip
    N c. attach an applicator to the solid stream outlet on the nozzle
    N d. simply move the handle to the vertical position on the nozzle

429: You are at sea and not in a special area as defined in ANNEX V of MARPOL. How many nautical miles from land must you be to discharge ground garbage that will pass through a one-inch (25 mm) screen into the sea?

    Y a. 3 nm
    N b. 6 nm
    N c. 12 nm
    N d. 25 nm

449: On a vessel of 9,000 tons displacement there are two slack deep tanks of palm oil (SG .86). Each tank is 40 feet long and 30 feet wide. What is the reduction in metacentric height due to free surface with the vessel in sea water (SG 1.025)?

    N a. .27 ft
    Y b. .48 ft
    N c. .57 ft
    N d. .74 ft

877: A marine chemist issues gas free certificates and is certified by the __________.

    N a. Mine Safety Appliance Association
    N b. American Chemical Society
    N c. Marine Chemists Association
    Y d. National Fire Protection Association

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

1011: Which vessel(s) is(are) required to comply with the vessel bridge-to-bridge radiotelephone regulations while navigating?

    N a. All towing vessels 25 feet or less in length
    N b. All passenger vessels of 50 gross tons or less, carrying one or more passengers
    Y c. Power-driven vessels 20 meters in length or longer
    N d. An intermittently manned floating plant under the control of a dredge

1141: You are on a supply run to an offshore drilling rig. On board is the cargo listed. What is the height above the main deck of the center of gravity of the cargo? ST-0027

    N a. 2.15 feet
    N b. 2.05 feet
    N c. 1.85 feet
    Y d. 1.52 feet

1306: Water pockets on the underside of an inflatable liferaft are for __________.

    N a. catching rain water
    Y b. stability
    N c. easy drainage
    N d. maneuverability

1398: The size of fire hydrant hose connections on a cargo vessel 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

1614: You may have to give artificial respiration after a/an __________.

    N a. drowning
    N b. electrocution
    N c. poisoning
    Y d. All of the above

1659: You have berthed in a port area with other tank vessels. What signal is displayed by a vessel to indicate it is transferring flammable or combustible liquid cargo?

    N a. A flashing yellow light
    Y b. A red light visible all around the horizon
    N c. A green light visible all around the horizon
    N d. An illuminated red and yellow caution flag

1706: The major lift-producing part of a sail is the __________.

    Y a. leading edge
    N b. trailing edge
    N c. head
    N d. foil

1788: Which channel is designated as the VHF follow-on communications channel and is required in all portable survival craft equipment?

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

1984: You have 550 tons of below deck tonnage including liquid mud. Your existing deck cargo is 120 tons with a VCG above the deck of 2.6 feet. What is the maximum additional deck cargo tonnage you are permitted to load? (See illustration D036DG, stability letter for M.V. Hudson) (D036DG )

    N a. 20 tons
    N b. 60 tons
    Y c. 120 tons
    N d. 240 tons

2261: If the engine of a survival craft does not start, check to see __________.

    Y a. that the fuel valve is open
    N b. if the air supply system is open
    N c. if the water sprinkler system is open
    N d. if the limit switch is on

2294: Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?

    N a. Foam
    N b. Carbon dioxide
    N c. Dry chemical
    Y d. Water fog

2437: A heavy steel device that is set on the sea floor and used as a drilling template in offshore drilling operations is called a __________.

    Y a. temporary guide base
    N b. permanent guide base
    N c. guide frame
    N d. foundation template

2497: In MODU drilling operations, the term tripping means __________.

    N a. releasing the tongs from the drill pipe
    N b. welding hard metal to tool joints
    Y c. hoisting drill pipe out of and returning it to the wellbore
    N d. sliding a joint of drill pipe down to the pipe rack ramp

2545: On a MODU crane, the boom indicator tells the operator what the boom angle is compared to the __________.

    N a. vertical position
    Y b. horizontal position
    N c. boom stop angle
    N d. minimum radius angle

2647: Which statement concerning GMDSS Radio Operator requirements is FALSE?

    N a. Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea.
    N b. Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well.
    Y c. Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications.
    N d. While at sea, adjustments to, and the maintaining of, GMDSS equipment may be performed by the GMDSS Radio Operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer.

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

2869: Mechanical gearing of deck machinery such as the windlass or towing engine should __________.

    N a. be open to view so, if a foreign object gets in the gearing, the operator can immediately stop the machinery
    Y b. have a guard over the gearing
    N c. be painted a contrasting color from the base color in order to call attention to the gearing
    N d. not be operated if there is any crew within 10 feet of the machinery

2915: A MODU lists and trims about the __________.

    N a. center of gravity
    N b. center of buoyancy
    Y c. center of flotation
    N d. centroid of the underwater volume

2998: The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of __________. (Uninspected Vessel Regulations)

    N a. one approved flotation cushion for each person on board
    Y b. one approved life preserver for each person on board and one lifebuoy
    N c. one approved inflatable vest for each person on board
    N d. lifeboat capacity equal to 1 1/2 times the number of persons on board

3000: A rigid lifesaving device ONLY designed for survivors to hold on to while in the water is known as a __________.

    N a. liferaft
    N b. life float
    N c. life preserver
    Y d. buoyant apparatus

3239: Your tow includes a loaded chlorine barge. After inspecting the tow, the mate reports that he hears a hissing sound coming from the safety valves. Where will you find information on emergency procedures concerning the uncontrolled release of cargo?

    N a. Barge's Certificate of Inspection
    Y b. Cargo Information Card on your towboat
    N c. Cargo Manifest or loading paper
    N d. Dangerous Cargo Regulations

3368: Your tow includes a barge carrying chlorine. Which special requirements must be observed?

    N a. The wing voids shall not be opened when underway.
    N b. You must post a deckhand to keep a special watch on this barge.
    Y c. A cargo information card for chlorine must be in the pilothouse.
    N d. All of the above

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

3600: How should the number "3" be pronounced when spoken on the radiotelephone?

    Y a. TAY-RAH-TREE
    N b. BEES-SOH-THREE
    N c. NUM-ERL-THREE
    N d. TRIC-THREE

3625: The DEEP DRILLER is on location during a storm. Windward anchor tensions begin to exceed the test tensions. To reduce tensions while minimizing offset over the well, you should __________.

    N a. increase tension on the leeward chain
    N b. pay out more chain on the windward side
    Y c. reduce tension on the leeward chains
    N d. connect an emergency tow wire to the work boat

3654: You are communicating on the radiotelephone using plain English. Which procedural word (proword) indicates that you have received another vessel's transmission?

    N a. Out
    N b. Over
    Y c. Roger
    N d. Wilco

3655: You can indicate that your vessel is in distress by __________.

    N a. displaying a large red flag
    N b. displaying three black balls in a vertical line
    N c. sounding five or more short and rapid blasts on the whistle
    Y d. continuously sounding the fog whistle

3789: The signal for a fire emergency on an OSV is __________.

    N a. a 30 second on 30 second off alternating signal
    Y b. the continuous blast of the ships whistle for not less than 10 seconds supplemented by the continuous ringing of the general alarm bells for not less than 10 seconds
    N c. an intermittent ringing of the general alarm for not less than ten seconds
    N d. announced over the PA system

3941: Aboard the DEEP DRILLER, the drill water pump may be used to provide drill water to the deck and __________.

    Y a. supplement the bilge pumps
    N b. provide saltwater service to the deck
    N c. emergency fuel-oil recovery
    N d. supplement the ballast pumps

4403: Scouring usually occurs with soils such as __________.

    N a. clay
    Y b. sand
    N c. coral
    N d. mud

5037: Where will you find the requirements for the signals that must be sounded by a mobile offshore drilling unit that is being towed through an area of restricted visibility?

    Y a. COLREGS
    N b. MMS Rules
    N c. SOLAS Convention
    N d. Coast Pilot

5127: In illustration D041DG, the symbol for displacement is __________.

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

5181: The DEEP DRILLER departs a fresh water port at a draft of 19.5 feet. What will be the draft in sea water?

    N a. 18.7 feet
    Y b. 19.1 feet
    N c. 19.4 feet
    N d. 19.8 feet

5313: The COASTAL DRILLER, in ocean transit at a draft of 10 feet 0 inches with winds greater than 70 knots, has a KGT of 39.0 feet and a KGL of 38.6 feet. The margin on the maximum allowable KG is __________.

    Y a. 2.6 feet
    N b. 4.1 feet
    N c. 26.3 feet
    N d. 26.8 feet

5479: The purpose of the inclining experiment on a vessel is to determine the __________.

    Y a. location of the center of gravity of the light ship
    N b. position of the center of buoyancy
    N c. position of the metacenter
    N d. maximum load line

5586: Your drafts are: FWD 17'-09", AFT 21'-01". Use the blue pages of the Stability Data Reference Book to determine the location of the center of flotation relative to amidships.

    N a. 5.1 feet forward
    Y b. 4.7 feet forward
    N c. 2.6 feet aft
    N d. 0.8 foot forward

5655: When the air temperature is just below 32°F, snow FIRST adheres to __________.

    N a. surfaces near the waterline
    N b. vertical surfaces
    Y c. horizontal surfaces
    N d. leeward surfaces

5668: Your drafts are: FWD 16'-02", AFT 18'-02". Use the blue pages of the Stability Data Reference Book to determine the MT1.

    N a. 935 foot-tons
    Y b. 960 foot-tons
    N c. 985 foot-tons
    N d. 1000 foot-tons

5835: The initial tension set in the mooring system of a MODU establishes the __________.

    N a. maximum water depth at which drilling operations can be conducted
    Y b. distance the unit can be offset from the wellbore before the restoring forces oppose the environmental forces
    N c. maximum time it will take to disconnect the riser package in the event of a storm
    N d. minimum amount of ballast needed to keep the vessel at operating draft during normal drilling operations

6671: Each hand portable fire extinguisher on a MODU must be marked with __________.

    N a. the name of the unit on which it is located
    N b. the date that it was installed on the unit
    N c. the names of the individuals qualified to use it
    Y d. an identification number different from other extinguishers on the unit

6772: Your drafts are: FWD 23'-03", AFT 27'-01". Use the blue pages of the Stability Data Reference Book to determine the vessels displacement if you are in salt water.

    N a. 12,750 tons
    N b. 12,900 tons
    Y c. 13,150 tons
    N d. 13,250 tons

7373: When a semisubmersible rig under tow experiences pounding on the forward transverse brace, the surest way to alleviate the condition would be to __________.

    N a. adjust the length of the tow line
    N b. have the tug slow down
    Y c. ballast down
    N d. change course

7683: Increasing free surfaces has the effect of raising the __________.

    N a. uncorrected KG
    Y b. virtual height of the center of gravity
    N c. metacenter
    N d. metacentric height

8205: While on an ocean tow, the COASTAL DRILLER is threatened with the approach of a severe storm. The legs should be lowered so that the TOC (tip-of-can) is lowered from 12.38 feet to __________.

    N a. 48.12 feet
    Y b. 60.50 feet
    N c. 68.50 feet
    N d. 78.50 feet

8527: The COASTAL DRILLER, while drilling, has a total weight of 15,435 kips. The LM are 1,975,680 ft-kips and the TM are -15,435 ft-kips. What is the port leg reaction?

    N a. 4,060 kips
    N b. 5,145 kips
    N c. 5,559 kips
    Y d. 5,816 kips

8663: While the DEEP DRILLER is operating as shown in Sample Load Form #4 (Drilling), casing is accidentally dropped over the starboard side. If the starboard forward inclination is slowly increasing, which tank is probably damaged?

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

9293: An elevated jack-up weighs 14,000 kips. The drill floor, weighing 700 kips, is skidded 10.0 feet to starboard. The change in TCG is __________.

    N a. 9.00 feet starboard
    Y b. 0.50 foot starboard
    N c. 1.50 foot starboard
    N d. 1.00 foot starboard

9315: Since electrical burn victims may be in shock, the FIRST medical response is to check for __________.

    N a. indication of broken bones
    Y b. breathing and heartbeat
    N c. symptoms of concussion
    N d. bleeding injuries

9541: When the height of the metacenter is the same as the height of the center of gravity of a vessel, the upright equilibrium position is __________.

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

9563: The KG of a vessel is found by dividing the displacement into the __________.

    N a. height of the center of gravity of the vessel
    Y b. sum of the vertical moments of the vessel
    N c. sum of the free surface moments of the vessel
    N d. sum of the longitudinal moments of the vessel

9577: When is the density of the water required to be logged in the logbook of a MODU?

    N a. Any time the vessel moves from water of one density into waters of a different density
    Y b. Prior to getting underway when the vessel is floating in fresh or brackish water
    N c. Only when the vessel moves from fresh water into salt water
    N d. The density of the water is not required to be logged in the unofficial logbook