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.


23: Your ship is sinking rapidly. A container containing an inflatable liferaft has bobbed to the surface upon functioning of the hydrostatic release. Which action should you take?


128: A seaman has a small, gaping laceration of the arm that is not bleeding excessively. What can be done as an alternative to suturing to close the wound?


289: You are at the helm of a sailing vessel under sail on the starboard tack, close hauled, and you are instructed to "head up". You should __________.


293: Which statement is TRUE concerning life jackets which are severely damaged?

    Y a. They should be replaced.
    N b. They must be tested for buoyancy before being continued in use.
    N c. They can be repaired by a reliable seamstress.
    N d. They can be used for children.

320: As the displacement of a vessel increases, the detrimental effect of free surface __________.

    N a. increases
    Y b. decreases
    N c. remains the same
    N d. may increase or decrease depending on the fineness of the vessel's form

430: The effects of free surface on a vessel's initial stability do NOT depend upon the __________.

    N a. volume of displacement of the vessel
    N b. dimensions of the surface of the liquid
    Y c. amount of liquid in slack tanks
    N d. specific gravity of the liquid in the tank

467: Which is the required location of the radiotelephone station aboard a vessel to which the "Vessel Bridge-to-Bridge Radiotelephone Act" applies?

    Y a. On the bridge or in the wheelhouse
    N b. In a separate radio compartment
    N c. Adjacent to the main power source
    N d. As high as possible on the vessel

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.

563: Which item is of the most use in getting a lifeboat away from a moving ship?

    N a. The falls
    Y b. Boat hook
    N c. Boat painter
    N d. Sea painter

837: The largest crew a cargo vessel may carry without having a hospital space is __________.

    N a. 6
    Y b. 11
    N c. 12
    N d. 16

985: What should be used to send the group "Bearing 074° True"?

    N a. A074T
    N b. B074
    N c. B074T
    Y d. A074

1103: A vessel is "listed" when it is __________.

    Y a. inclined due to an off-center weight
    N b. inclined due to the wind
    N c. down by the head
    N d. down by the stern

1124: Spaces containing gasoline-powered machinery or gasoline storage tanks on small passenger vessels should have ventilator ducts that extend to the bilges because __________.

    N a. air is heavier than gas fumes
    N b. oil and water mix there
    N c. it prevents air from entering or leaving the space
    Y d. Gasoline vapors are heavier than air, tend to settle in the bilges, and create an explosion hazard

1388: Which extinguishing agent will absorb the most heat?

    N a. CO2
    N b. Foam
    Y c. Water
    N d. Dry chemical

1433: You should NOT use a power tool if __________.

    N a. it has a three-prong plug
    Y b. the insulation of the power wires is worn
    N c. hand tools can be used instead
    N d. the power source is alternating current

1501: You are in a lifeboat when you sight the stars shown. You will be heading almost due north when you head for Polaris which is marked by which letter? (D006SA )

    N a. B
    Y b. C
    N c. F
    N d. H

1637: Which is a disadvantage of Halon as a fire extinguishing medium?

    N a. Conducts electricity
    N b. Difficult to store
    N c. Large volume necessary to be effective
    Y d. Ineffective in powdered metal fires

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

1861: On offshore drilling units, emergency lighting and each emergency power system must be tested at least once a __________.

    N a. day
    Y b. week
    N c. month
    N d. year

1880: The primary reason for placing covers over storage batteries is to __________.

    N a. prevent the accumulation of explosive gases
    N b. protect the hull from leaking electrolyte
    N c. prevent movement of the battery in rough waters
    Y d. protect against accidental shorting across terminals

1957: The first AMVER position report must be sent within how many hours of departure?

    N a. 12
    Y b. 24
    N c. 36
    N d. 48

2092: According to regulations, cargo pumps in tank vessels carrying grade A, B, C, or D liquid cargo, shall be isolated from sources of vapor ignition by __________. (vessel constructed 1970)

    N a. cofferdams
    N b. general cargo spaces
    N c. passageways or living quarters
    Y d. gastight bulkheads

2238: Which system has the least effective radius of operation?

    N a. HF SITOR
    N b. MF NBDP
    Y c. VHF DSC
    N d. NAVTEX

2306: Which flash point would indicate a grade D combustible liquid?

    N a. 40°F
    Y b. 95°F
    N c. 79°F
    N d. 155°F

2391: When fire pumps are used for other than firefighting services, each pipe connecting the other service (except for branch lines used for deck washing) must have a __________.

    N a. check valve installed in the line
    Y b. shut off valve at a manifold near the pump
    N c. quick disconnect union within ten feet of the pump
    N d. regulator in the line set at 125 psi

2506: Grade E combustible liquids are those having flash points of __________.

    N a. 80°F or less
    N b. greater than 80°F and less than 115°F
    N c. greater than 115°F and less than 150°F
    Y d. 150°F or greater

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.

2592: Which signal is detected as originating from a SART?

    N a. The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign
    Y b. A line of blip code on a radar screen outward from the SART's position along its line of bearing
    N c. A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing
    N d. None of these

2639: Your vessel's drafts are: FWD 23'-10", AFT 26'-00". The LCG of the forepeak is 200 feet forward of amidships. How many tons of ballast must be pumped into the forepeak in order to have a drag of 18 inches? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

    N a. 34 tons
    Y b. 45 tons
    N c. 55 tons
    N d. 61 tons

2661: When the longitudinal strength members of a MODU are continuous and closely spaced, the vessel is __________.

    N a. transversely framed
    Y b. longitudinally framed
    N c. intermittently framed
    N d. web framed

2891: The maximum angle at which the intact stability curves are valid for MODU's is the angle for __________.

    N a. the limit of positive stability
    N b. the limit of small-angle stability
    N c. maximum offset
    Y d. downflooding

2897: If the result of loading a vessel is an increase in the height of the center of gravity, there will always be an increase in the __________.

    N a. metacentric height
    N b. righting arm
    N c. righting moment
    Y d. vertical moments

2966: Each vessel shall be dry-docked or hauled out at intervals not to exceed 2 years if operated in salt water for a total of more than __________. (small passenger vessel regulations)

    Y a. 3 months in any 12 month period since it was last hauled out
    N b. 6 months in the 3 year period since it was last hauled out
    N c. 12 months in the 5 year period since it was last hauled out
    N d. whenever ownership or management changes

3287: A vessel displacing 18,000 tons has a KG of 50 feet. A crane is used to lift cargo weighing 20 long tons from a supply vessel. When lifting, the head of the crane boom is 150 feet above the keel. What is the change in KG?

    Y a. 0.11 foot
    N b. 0.17 foot
    N c. 0.25 foot
    N d. 0.32 foot

3341: Inflatable liferafts are provided with a __________.

    N a. Very pistol
    Y b. towing connection
    N c. portable radio
    N d. canned milk

3383: The DEEP DRILLER, at a mean draft of 45 feet, has a three-foot trim by the stern and a two-foot list to port. What is the draft at the starboard forward draft mark?

    Y a. 42.5 feet
    N b. 44.5 feet
    N c. 45.5 feet
    N d. 47.5 feet

3485: In the event the motion of the DEEP DRILLER is such that critical motion limits are exceeded, you should __________.

    N a. place the unit at 65 foot draft
    Y b. place the unit at 45 foot draft
    N c. shift loads to increase KG
    N d. place the unit in standby

3490: According to the SOLAS regulations, lifeboat falls must be renewed at intervals of how many years?

    N a. 2.5
    N b. 3
    N c. 4
    Y d. 5

3618: The SS AMERICAN MARINER has drafts of: FWD 28'-00", AFT 29'-00". Use the white pages of the Stability Data Reference Book to determine the drafts if you ballast the forepeak with 81.05 tons of seawater.

    N a. FWD 28'-06.2", AFT 28'-06.2"
    N b. FWD 28'-06.3", AFT 28'-08.0"
    Y c. FWD 28'-07.3", AFT 28'-07.8"
    N d. FWD 28'-10.0", AFT 28'-08.0"

3653: When a vessel signals her distress by means of a gun or other explosive signal, the firing should be at intervals of approximately __________.

    N a. 10 minutes
    Y b. 1 minute
    N c. 1 hour
    N d. 3 minutes

3760: 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

4042: How many B-II fire extinguishers must be in the machinery space of a 75-foot long fishing vessel propelled by engines with 1200 brake horsepower?

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

4142: You are underway at sea when a fire is reported in the forward part of the vessel. The wind is from dead ahead at 20 knots. You should __________.

    Y a. change course and put the stern to the wind
    N b. change course to put the wind on either beam and increase speed
    N c. remain on course and hold speed
    N d. remain on course but decrease speed

4199: A vessel's tropical load line is 6 in. above her summer load line. Her TPI is 127 tons. She will arrive in the summer zone 8 days after departure. She will burn off about 47 tons/day fuel and water consumption is 12 tons/day. How many tons may she load above her summer load line if she loads in the tropical zone?

    N a. 376
    Y b. 472
    N c. 762
    N d. 1016

4677: The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). If the contents of #6 and #7 drill water tanks are discharged, what is the new height of the center of gravity corrected for transverse free surface effects?

    N a. 47.49 feet
    N b. 49.16 feet
    Y c. 50.82 feet
    N d. 50.93 feet

4718: The Sailing Plan, required by vessels participating in AMVER, must be sent __________.

    N a. prior to departure
    Y b. within a few hours before or after departure
    N c. within 12 hours of departure
    N d. within 24 hours of departure

5617: Structural stress on a MODU can be reduced by __________.

    N a. lessening the effect of environmental forces
    Y b. even and symmetrical variable loading
    N c. local concentration of heavy consumables
    N d. increasing the metacentric height

5747: If the water depth is 500 feet, the length of the pendant wire from the anchor to the buoy is typically __________.

    N a. 400 feet
    N b. 500 feet
    Y c. 600 feet
    N d. 1000 feet

5753: The length of chain between the anchor and the end of the pendant line is called the __________.

    N a. pigtail chain
    N b. thrash chain
    Y c. crown chain
    N d. wear chain

6088: What is the meaning of the signal DX RQ when sent by the International Code of Signals?

    Y a. Are you sinking?
    N b. The call sign of a vessel registered in the Philippines.
    N c. The damage can be repaired at sea.
    N d. There are no tugs available.

6633: For a MODU not on an international voyage, an approved substitute for an impulse projected rocket-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

7131: A safety outlet is provided on the CO2 discharge piping to prevent __________.

    N a. over pressurization of the space being flooded
    N b. rupture of cylinder due to temperature increase
    Y c. over pressurization of the CO2 discharge piping
    N d. flooding of a space where personnel are present

8195: The COASTAL DRILLER, while in transit, expects the winds to increase to 75 knots. In order to meet the stability and leg strength requirements, the tip-of-can (TOC) position should be at __________.

    N a. 0.00 feet (flush with bottom of hull)
    N b. 1.20 feet
    N c. 12.38 feet
    Y d. 60.50 feet

8683: With no environmental forces on the DEEP DRILLER, the average of the forward drafts is 61.0 feet, and the average of the aft drafts is 59.0 feet. KGL is 51.13 feet. What is the value of LCG?

    N a. -0.12 foot
    N b. 0.12 foot
    N c. 2.11 feet
    Y d. 2.35 feet

8703: The DEEP DRILLER is loaded as shown in Sample Load Form #5 (Survival). While the unit is deballasting, port valve 5 fails in the closed position. You may deballast from tank 2P by pumping from tank 1P after opening valves 6 and __________.

    N a. 35
    N b. 7
    N c. 4
    Y d. 2

8855: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). If weather conditions make it necessary to ballast down to survival, how much ballast would be required?

    N a. 3,998.3 long tons
    Y b. 4,086.5 long tons
    N c. 4,188.0 long tons
    N d. 5,087.0 long tons

8877: The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Severe motion makes it necessary to ballast down to survival draft. It is decided to check stability at the intermediate draft of 32 feet. If the added ballast has an average VCG of 9.03 feet, and the sum of free surface moments is 56,244 foot-tons, what is the new GML?

    N a. 6.23 feet
    N b. 5.11 feet
    N c. 4.86 feet
    Y d. 4.06 feet

8983: The time required to incline from port to starboard and back to port again is called __________.

    N a. initial stability
    N b. range of stability
    N c. inclining moment
    Y d. rolling period

9153: The two factors which make underwater hull repair of a MODU difficult are accessibility and the __________.

    N a. availability of tools
    N b. shape of the hull
    Y c. pressure exerted by the water
    N d. threat of progressive flooding

9347: CO2 cylinders must be recharged when the weight of the charge in the cylinder is less than what percent of the stamped full weight of the charge?

    N a. 80%
    N b. 85%
    Y c. 90%
    N d. 95%