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.


2: An airplane wants a vessel to change course and proceed towards a vessel in distress. The actions of the aircraft to convey this message will NOT include __________.


229: Fuel oil tank vents are fitted with a screen which will stop __________.


282: The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to __________.


310: A vessel's light draft displacement is 7400 tons. The center of gravity at this draft is 21.5 ft. above the keel. The following weights are loaded: (WT. #1-450 tons, VCG #1-17.4 ft.; WT. #2-220 tons, VCG #2-11.6 ft.; WT. #3-65 tons, VCG #3-7.0 ft.). The new CG above the keel is __________.

    N a. 14.7 feet
    N b. 17.8 feet
    N c. 18.7 feet
    Y d. 20.9 feet

328: A man has suffered a burn on the arm. There is extensive damage to the skin with charring present. How is this injury classified using standard medical terminology?

    N a. Dermal burn
    Y b. Third-degree burn
    N c. Major burn
    N d. Lethal burn

420: The most important figure in calculating the free surface constant of a tank carrying liquids is __________.

    N a. depth
    N b. length
    N c. displacement
    Y d. breadth

508: Which should NOT be a treatment for a person who has received a head injury and is groggy or unconscious?

    Y a. Give a stimulant.
    N b. Elevate his head.
    N c. Stop severe bleeding.
    N d. Treat for shock.

568: On a small passenger vessel, if an inlet or discharge pipe is not accessible, its shut off valve __________.

    N a. must be operable from the weather deck
    N b. may be operable from any accessible location above the bulkhead deck
    N c. must be labeled at its operating point to show its identity and direction of closing
    Y d. All of the above

596: The Master of a cargo or tank vessel shall be responsible that each lifeboat, except those free-fall launched, is lowered to the water with crew and maneuvered at least once every __________.

    N a. week
    N b. month
    Y c. three months
    N d. year

614: Your vessel is damaged and listing to port. There is a short rolling period around the angle of list. The port side freeboard is reduced to 1 foot. There is no trim and the weather is calm. You should FIRST __________.

    N a. press up a slack double bottom tank on the port side
    N b. fill an empty centerline double bottom tank
    Y c. pump out a slack marine portable tank located on the portside amidships
    N d. jettison the anchors and anchor cables

620: A vessel's LCG is determined by __________.

    Y a. dividing the total longitudinal moment summations by displacement
    N b. dividing the total vertical moment summations by displacement
    N c. multiplying the MT1 by the longitudinal moments
    N d. subtracting LCF from LCB

697: A violation of the "Vessel Bridge-to-Bridge Radiotelephone Act" may result in a __________.

    Y a. civil penalty of $650 against the Master or person in charge of a vessel
    N b. civil penalty of $1,000 against the vessel itself
    N c. suspension and/or revocation of an operator's FCC license
    N d. All of the above

729: At what rate would you render mouth to mouth or mouth to nose artificial respiration to an adult?

    N a. 4 to 6 times per minute
    Y b. 12 to 15 times per minute
    N c. 20 to 30 times per minute
    N d. At least 30 times per minute

803: The abandon ship signal on the ship's whistle is __________.

    N a. 6 short blasts and 1 long blast
    N b. more than 6 short blasts
    Y c. more than 6 short blasts and 1 long blast
    N d. 1 long blast of at least 10 seconds

892: While you are working in a space, the fixed CO2 system is accidentally activated. You should __________.

    N a. secure the applicators to preserve the charge in the cylinders
    N b. continue with your work as there is nothing you can do to stop the flow of CO2
    Y c. retreat to fresh air and ventilate the compartment before returning
    N d. make sure all doors and vents are secured

944: The lifesaving signal indicating "You are seen - Assistance will be given as soon as possible" is the __________.

    N a. vertical motion of white flags
    N b. vertical motion of a white light or flare
    N c. firing of a green star signal
    Y d. None of the above

958: Which substance might be subject to spontaneous combustion?

    N a. Coal
    N b. Scrap rubber
    N c. Leather
    Y d. All of the above

1092: Which statement is TRUE concerning a combustible gas indicator?

    Y a. Several seconds will elapse between the taking of a sample and the reading appearing on the dial.
    N b. The instrument will operate in any atmosphere.
    N c. Toxicity of the atmosphere is measured by the instrument.
    N d. All of the above

1384: According to 46 CFR Subchapter T, rigid plastic or other nonmetallic piping __________.

    N a. may only be used for gasoline fuel piping
    N b. may only be used for diesel fuel piping
    Y c. may not be used for diesel or gasoline fuel piping
    N d. may be used for gasoline or diesel fuel piping

1395: After you have thrown the liferaft and stowage container into the water, you inflate the liferaft by __________.

    Y a. pulling on the painter line
    N b. forcing open the container which operates the CO2
    N c. hitting the hydrostatic release
    N d. using the hand pump provided

1456: You are reading the draft marks. The water level is at the bottom of number 11. What is the draft? (D032DG )

    N a. 11'-06"
    Y b. 11'-00"
    N c. 10'-09"
    N d. 10'-06"

1583: You are having a Coast Guard inspection. All carbon dioxide fire extinguishers aboard will be __________.

    Y a. weighed
    N b. discharged and recharged
    N c. checked for pressure loss
    N d. sent ashore to an approved service facility

1643: On a MODU with lifeboats stowed in two different locations, if all the lifeboats are lost in one location then the remaining lifeboats must accommodate what percentage of the persons permitted on board?

    N a. 50%
    N b. 75%
    N c. 90%
    Y d. 100%

1725: The most effective treatment for warming a crew member suffering from hypothermia is __________.

    N a. running or jumping to increase circulation
    N b. raising body temperature rapidly by placing hands and feet in hot water
    Y c. bundling the body in blankets to rewarm gradually
    N d. laying prone under heat lamps to rewarm rapidly

1855: An offshore drilling unit is required to carry on board an operations manual approved by the __________.

    Y a. Coast Guard
    N b. National Cargo Bureau
    N c. Minerals Management Service
    N d. builder

1858: A sailing vessel with the wind coming from 180° relative would be __________.

    N a. close hauled on the port tack
    N b. close hauled on the starboard tack
    Y c. running before the wind
    N d. on a broad reach

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

1950: The lifesaving equipment on all vessels shall be __________.

    N a. inspected weekly
    N b. stowed in locked compartments
    Y c. readily accessible
    N d. tested yearly

1973: To ensure receipt of all relevant MSI, a NAVTEX receiver should be turned on at least how many hours prior to departure from port?

    N a. 2
    N b. 4
    N c. 6
    Y d. 8

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

2133: If a vessel is sagging, which kind of stress is placed on the sheer strake?

    Y a. Compression
    N b. Racking
    N c. Tension
    N d. Thrust

2509: How many portable fire extinguishers are required in the cargo tank area of an unmanned tank barge during cargo transfer, if the barge has no cargo pumps of her own?

    Y a. One
    N b. Two
    N c. Three
    N d. None

2510: Camphor oil is classified as a __________.

    N a. Grade A flammable liquid
    N b. Grade C flammable liquid
    Y c. Grade D combustible liquid
    N d. Grade E combustible liquid

2699: Your vessel displaces 10,000 tons and has a KG of 22.6 feet. What will be the length of the remaining righting arm at an angle of inclination of 45° if the center of gravity shifts 2.0 feet transversely? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 3.8 feet
    Y b. 2.7 feet
    N c. 1.9 feet
    N d. 0.9 foot

2700: According to the regulations, what fire safety control feature is required in quick-closing shut off valves?

    N a. Electrical cut off switch
    Y b. A fusible link
    N c. Manual cut off switch
    N d. A water spray actuator

3055: Which statement is TRUE concerning life jackets?

    N a. Buoyant vests may be substituted for life jackets.
    Y b. Life jackets are designed to turn an unconscious person's face clear of the water.
    N c. Life jackets must always be worn with the same side facing outwards to float properly.
    N d. Lightly stained or faded life jackets will fail in the water and should not be used.

3080: When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard, which of the following is the best source for determining what is required?

    N a. The supervisor in charge of the dock to which the barge is tied up
    N b. Part 38 of the Rules and Regulations for Tank Vessels
    Y c. The Certificate of Inspection of the barge
    N d. The local fire marshal

3543: The DEEP DRILLER's lightweight is the condition prior to loading __________.

    N a. deck load
    N b. deck load and lower-hull liquids
    N c. deck load, lower-hull liquids, and external loads
    Y d. deck load, lower-hull liquids, external loads, and deploying anchors

3556: The normal equipment of every rescue boat shall include __________.

    Y a. compass
    N b. one 50 meter line
    N c. one can opener
    N d. All of the above

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

3897: What is the maximum length of time that distress flares are approved for?

    N a. 1 and 1/2 years
    N b. 2 years
    Y c. 3 and 1/2 years
    N d. 5 years

3955: The person-in-charge shall insure that each rescue boat on an OSV is lowered to the water, launched and operated at least once every __________.

    N a. week
    N b. two months
    Y c. three months
    N d. six months

4006: The SS AMERICAN MARINER arrived in port with drafts of: FWD 18'-06", AFT 20'-10". Cargo was loaded and discharged as indicated. Use sheet 2 in the white pages of the Stability Data Reference Book to determine the final drafts. ST-0152

    N a. FWD 18'-11", AFT 20'-02"
    N b. FWD 19'-01", AFT 20'-00"
    N c. FWD 19'-03", AFT 19'-10"
    Y d. FWD 19'-05", AFT 19'-08"

4055: In the DEEP DRILLER, VCG is obtained from the sum of the vertical moments by __________.

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

4125: The DEEP DRILLER is observed to be level at a draft of 60.0 feet. At the same time, the calculated load form shows the displacement to be 17,845 long tons, total longitudinal moment 51,466 foot-kips, and total transverse moments -10,000 foot-kips. What is the transverse location of the missing load?

    N a. 36.67 feet
    N b. 0.56 foot
    N c. -0.55 foot
    Y d. -36.67 feet

4159: A yellow signal, floating in the air from a parachute, about 300 feet above the water, indicates that a submarine __________.

    Y a. will be coming to periscope depth
    N b. will be coming to the surface
    N c. is on the bottom in distress
    N d. is in distress and will try to surface

4160: Your vessel's drafts are: FWD 18'-09", AFT 20'-05"; and the KG is 23.8 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 30° inclination.

    N a. 0.9 feet
    Y b. 2.1 feet
    N c. 4.0 feet
    N d. 5.9 feet

4198: A tanker loads at a terminal within the tropical zone. She will enter the summer zone six days after departing the loading port. She will burn off 45 tons/day and daily water consumption is 8 tons. How many tons may she load over that allowed by her summer load line?

    N a. 270
    N b. 278
    N c. 291
    Y d. 318

4204: You are loading in a port subject to the summer load line mark and bound for a port subject to the tropical load line mark. You will enter the tropical zone after steaming four days. You will consume 33 tons of fuel, water, and stores per day. The hydrometer reading at the loading pier is 1.006, and the average TPI is 66. What is the minimum freeboard required at the start of the voyage? (Get Table Data)

    Y a. 78 inches
    N b. 82 inches
    N c. 86 inches
    N d. 88 inches

4246: Radiation spreads a fire by __________.

    Y a. transferring heat across an unobstructed space
    N b. heated gases flowing through ventilation systems
    N c. burning liquids flowing into another space
    N d. transmitting the heat of a fire through the ship's metal

4507: The height of the transverse metacenter of the COASTAL DRILLER at a displacement of 13,011 kips is __________.

    N a. 144.21 feet
    Y b. 145.33 feet
    N c. 267.98 feet
    N d. 270.13 feet

4637: How much drill water should be transferred from tanks #23 and #24 to tank #1 to level the COASTAL DRILLER, in transit at a draft of 10 feet 6 inches, if the total longitudinal moments are 1,700,000 ft-kips?

    N a. 438 kips
    Y b. 451 kips
    N c. 521 kips
    N d. 537 kips

4717: The COASTAL DRILLER is loaded as shown in the sample load from #2 (preload). All of the preload is dumped with the exception of 50 kips in preload tank #28. What is the new LCG?

    N a. 119.11 feet AF0
    N b. 119.44 feet AF0
    Y c. 119.68 feet AF0
    N d. 120.11 feet AF0

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

7323: Whenever your marine radio is on, FCC Rules require you to monitor __________.

    N a. a commercial ship-to-ship channel
    N b. the last frequency that was used
    Y c. the distress and calling frequency
    N d. the radio only if expecting a call

7675: To calculate the free surface correction, it is necessary to divide the free-surface moments by the __________.

    N a. total weight of liquid loads
    Y b. total displacement
    N c. lightweight
    N d. deadweight

8125: While in transit, the DEEP DRILLER suffers flooding in the starboard pump room. Both starboard bilge pumps are inadequate to dewater the pump room. You may supplement the performance of the bilge pumps by using the __________.

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

8313: The worst atmospheric condition for dispersion of H2S is __________.

    N a. heavy rain
    N b. gusty winds with rain
    Y c. nearly calm, clear nights or early morning
    N d. full sun with high winds

9377: After abandoning ship, you should deploy the sea anchor from a liferaft to __________.

    N a. keep the liferaft from capsizing
    N b. navigate against the current
    N c. keep personnel from getting seasick
    Y d. stay in the general location

9706: Which of the following statements is/are FALSE in regard to Ro-Ro vessels' spaces that are "specially suitable for vehicles"?

    N a. The spaces shall be fitted with an approved fire or smoke detecting system.
    Y b. The spaces shall NOT be fitted with fixed CO2 fire extinguishing systems.
    N c. The Commandant may permit the installation of an approved water sprinkler extinguishing system.
    N d. All of the above