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.


63: You have abandoned ship and are in an inflatable raft that has just inflated. You hear a continuous hissing coming from a fitting in a buoyancy tube. What is the cause of this?


89: To determine what navigation lights and day-shapes must be displayed on mobile offshore drilling units under tow, you should check the __________.


214: In a message sent by flashing light, what group of letters will direct the receiver of a message to repeat the transmission back to the sender?


223: The steering oar in a lifeboat is __________.

    N a. shorter than the others
    N b. used for the stroke oar
    N c. used by the forward man in the boat to direct the bow
    Y d. longer than the others and should be lashed to the stern

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

    Y a. it provides cooling as a secondary effect
    N b. works well on extinguishing electrical fires
    N c. can be used to combat combustible metal fires
    N d. All of the above

403: Due to the shape of the sea anchor, the best way to haul it back aboard is by __________.

    N a. hauling in on the anchor line as you would any anchor
    N b. getting all hands to assist
    Y c. its trip line
    N d. cutting the line, as you cannot haul it back in

435: If an emergency pump control is used as the emergency shutdown on a tank vessel, it must __________.

    N a. stop the flow of oil at the main deck manifold
    N b. prevent the oil from leaving the shore facility
    Y c. prevent the oil from siphoning through the pump
    N d. None of the above

582: Extra chemicals for producing chemical foam should be stored __________.

    N a. in a freezer
    Y b. in a cool dry place
    N c. at a temperature not less than 80°F
    N d. in open bins

613: The length of the steering oar in a lifeboat is __________.

    N a. shorter than the rowing oars
    N b. the same length as the rowing oars
    Y c. longer than the rowing oars
    N d. unrelated to the length of the rowing oars

849: You are testing the external inflation bladder on an immersion suit and find it has a very slow leak. Which action should be taken?

    N a. Replace the suit.
    N b. Replace the inflation bladder.
    Y c. Take it out of service and repair in accordance with the manufacturers instructions.
    N d. Some leakage should be expected and a topping off tube is provided; no other action is necessary.

885: Which type of marine sanitation device (MSD) is used solely for the storage of sewage and flush water at ambient air pressure and temperature?

    N a. Type I
    N b. Type II
    Y c. Type III
    N d. Type IV

940: When a vessel is inclined by an external force, the __________.

    N a. shape of the vessel's underwater hull remains the same
    N b. vessel's center of gravity shifts to the center of the vessel's underwater hull
    Y c. vessel's center of buoyancy shifts to the center of the vessel's underwater hull
    N d. vessel's mean draft increases

1060: The SS AMERICAN MARINER will sail with the load shown. Use the white pages of The Stability Data Reference Book to determine the drafts. ST-0024

    N a. FWD 26'-06", AFT 28'-10"
    N b. FWD 26'-10", AFT 28'-05"
    Y c. FWD 27'-00", AFT 28'-03"
    N d. FWD 27'-03", AFT 28'-00"

1074: Which one of the following signals is made at night by a lifesaving station to indicate "Landing here highly dangerous"?

    Y a. Horizontal motion of a white light or flare
    N b. Vertical motion of a white light or flare
    N c. White star rocket
    N d. Vertical motion of a red light or flare

1219: 46 CFR Subchapter T requires that rigid plastic or other nonmetallic piping __________.

    N a. only be used in non-vital systems
    N b. not be used in gasoline or diesel fuel systems
    N c. have approved metallic fittings and cutoff valves where it penetrates a watertight deck or bulkhead
    Y d. All of the above

1297: A small passenger vessel of not more than 65 feet in length must have a collision bulkhead if it __________.

    N a. operates on exposed waters
    N b. carries more than 49 passengers
    N c. is more than 40 feet in length and operates on partially exposed waters
    Y d. All of the above

1330: How should the lifeboat sea painter be rigged?

    N a. Spliced into the ring on the stem post
    N b. Secured by a toggle around the outboard side of a forward thwart
    Y c. Secured to the inboard side of a forward thwart and led inboard of the falls
    N d. Secured by a toggle to the stem post and led outboard of the falls

1360: When lowering a boat with gravity davits, it will be pulled into the embarkation deck by the __________.

    N a. falls
    Y b. tricing pendants
    N c. frapping lines
    N d. boat hooks

1383: Which statement about entry into a water ballast tank that has been sealed for a long time is TRUE?

    N a. A "buddy system" should be used where someone enters the tank with you.
    N b. Sea water acts on the ship's metal and generates chlorine gas which may accumulate in poisonous quantities.
    N c. You should always wear a gas mask.
    Y d. After ventilation and testing, and the tank is found safe for entry, someone should stand by at the tank entrance while you are inside.

1605: What entry would NOT be shown on the V line of an AMVER report?

    N a. MD
    Y b. MT
    N c. PA
    N d. NURSE

1715: After allowing for pressure losses, the pressure-volume capacity of an inert gas blower must be able to maintain a pressure, in any cargo tank, at a minimum of __________.

    N a. 50 millimeters of water pressure
    Y b. 100 millimeters of water pressure
    N c. 150 millimeters of water pressure
    N d. 200 millimeters of water pressure

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

2085: An offshore drilling unit must have enough inflatable liferafts to accommodate at least what percentage of the persons allowed?

    N a. 20%
    N b. 30%
    N c. 50%
    Y d. 100%

2305: With the sprinkler system and air system on and all hatches shut, the survival craft will provide protection from a __________.

    N a. nuclear environment
    Y b. fire and toxic environment
    N c. hurricane
    N d. drop greater than 10 feet

2624: The primary concern(s) for safely transporting and handling LFG is(are) __________.

    N a. a system of cargo tanks and piping free from leaks
    N b. cargo tanks and piping strong enough to withstand the pressure
    N c. cargo tanks and piping located or protected to minimize physical damage
    Y d. All of the above

2689: A vessel with a large GM will __________.

    Y a. have more resistance to listing in case of damage
    N b. have less tendency to have synchronous rolling
    N c. be less likely to have cargo shift
    N d. ride more comfortably

2813: A vessel heading WSW is on a course of __________.

    N a. 202.5°
    N b. 225.0°
    Y c. 247.5°
    N d. 271.0°

2894: The sailing drafts are: FWD 23'-10", AFT 25'-02" and the GM is 5.3 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book, to determine the available righting arm at 18° inclination.

    N a. 0.8 feet
    N b. 1.1 feet
    N c. 1.5 feet
    Y d. 1.9 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

2925: The free surface effects of a partially full liquid tank decrease with increased __________.

    N a. density of the liquid
    N b. placement of the tank above the keel
    Y c. displacement volume of the MODU
    N d. size of the surface area in the tank

3013: Semisubmersibles A and B are identical. However, "A" is more tender than "B". This means that "A" relative to "B" has a __________.

    N a. lower KG
    Y b. smaller GM
    N c. smaller roll angle
    N d. larger GZ

3107: Subtracting the height of the center of gravity corrected for longitudinal free surface effects from the height of the longitudinal metacenter of a MODU yields __________.

    N a. GM
    Y b. GML
    N c. KGL
    N d. KML

3226: The sign used to caution persons approaching the gangway of a tank barge during cargo transfer reads __________.

    N a. "Warning, Keep Off, Stay Clear"
    N b. "Danger, Do Not Board"
    Y c. "Warning, No Smoking, No Open Lights, No Visitors"
    N d. "Dangerous Cargo Being Transferred"

3305: The height of the transverse metacenter for a MODU is 62.44 feet. The height of the center of gravity is 56.10 feet, and the transverse free surface correction is 1.21 feet. What is the value of the metacentric height corrected for transverse free surface effects?

    Y a. 5.13 feet
    N b. 6.34 feet
    N c. 8.76 feet
    N d. 12.10 feet

3375: The DEEP DRILLER at a draft of 58.0 feet discharges 1,792.44 long tons of ballast. What is the new draft?

    N a. 40 feet
    Y b. 45 feet
    N c. 50 feet
    N d. 55 feet

3462: 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

3599: What should you do with your emergency position indicating radio beacon if you are in a lifeboat during storm conditions?

    Y a. Bring it inside the liferaft and leave it on.
    N b. Bring it inside the liferaft and turn it off until the storm passes.
    N c. Leave it outside the liferaft and leave it on.
    N d. Leave it outside the liferaft and turn it off.

3634: You are underway in mid-ocean when you hear a distress message. The position of the sender is 150 miles away. No other vessel has acknowledged the distress. Your maximum speed is 5 knots and due to the seriousness of the distress, you cannot arrive on scene to provide effective assistance. What action should you take?

    N a. Do not acknowledge the distress message.
    N b. Send an urgency message about the distress.
    Y c. Use the signal MAYDAY RELAY and transmit the distress message.
    N d. Transmit a message as though your vessel was in distress.

3644: When should distress flares and rockets be used?

    N a. Immediately upon abandoning the vessel
    Y b. Only when there is a chance of their being seen by a rescue vessel
    N c. At one hour intervals
    N d. At half hour intervals

3646: One of the signals, other than a distress signal, that can be used by a rescue boat to attract attention is a/an __________.

    N a. red star shell
    Y b. searchlight
    N c. burning barrel
    N d. orange smoke signal

3663: Before deballasting to survival draft in the event of predicted heavy weather, the DEEP DRILLER Operations Manual recommends that the mooring lines be slacked __________.

    N a. 10 feet
    Y b. 20 feet
    N c. 30 feet
    N d. 40 feet

3743: An unconscious person should NOT be __________.

    N a. placed in a position with the head lower than the body
    N b. given an inhalation stimulant
    Y c. given something to drink
    N d. treated for injuries until conscious

3827: What is the change in transverse moments for the DEEP DRILLER if 103.48 long-tons of ballast is transferred from a full ballast tank 1P to an empty ballast tank 10S?

    N a. 15,522 foot-tons increase
    Y b. 15,181 foot-tons increase
    N c. 3,594 foot-tons increase
    N d. 1,797 foot-tons increase

3953: To turn over a liferaft that is floating upside down, you should pull on the __________.

    N a. canopy
    N b. manropes
    N c. sea painter
    Y d. righting lines

4084: A towing vessel is NOT required to be fitted with radar if it is ____________ .

    N a. used occasionally to assist vessels in distress
    Y b. used solely for pollution response
    N c. less than 49 feet in length
    N d. towing alongside

4167: The DEEP DRILLER is loaded as shown in the Sample Load form #3 (Preparing to Drill). If all the liquid mud (see table 8) is dumped, what would be the new metacentric height corrected for transverse free surface effects?

    Y a. 11.26 feet
    N b. 10.07 feet
    N c. 9.67 feet
    N d. 8.30 feet

4337: The COASTAL DRILLER, following discharge of preload, should __________.

    N a. leave dump valves open
    Y b. close all dump valves
    N c. remove dump valves
    N d. replace dump valves

4397: What maximum wind velocity is assumed when determining the limits of elevated service for the COASTAL DRILLER?

    Y a. 100 knots
    N b. 70 knots
    N c. 50 knots
    N d. It varies with the Allowable Wind and Wave charts.

4573: The total leg load reactions on an independent leg, self-elevating unit include static and __________.

    Y a. environmental loading
    N b. variable loading
    N c. fixed loading
    N d. basic loading

4603: The COASTAL DRILLER is elevated while preparing for the passage of a severe storm. With ideal loading, the static loading on each of the three legs would be 4,715 kips. However, the LCG is 121 feet AFO and TCG is 0.5 foot to starboard of the centerline. By how many kips does the starboard leg reaction exceed the ideal loading?

    N a. 00 kips
    N b. 32 kips
    Y c. 149 kips
    N d. 181 kips

6011: On a MODU, hand portable extinguishers are size(s) __________.

    N a. II only
    N b. II and III
    Y c. I and II
    N d. I only

6085: On a MODU, a fixed carbon dioxide or other approved system must be installed __________.

    Y a. where oil or chemical drums are stored
    N b. in all battery storage locations
    N c. in paint lockers
    N d. in all of the above locations

6657: The design specifications for cranes and crane foundations on MODU's are set and published by the __________.

    N a. American Society of Mechanical Engineers
    Y b. American Petroleum Institute
    N c. Society of Petroleum Engineers
    N d. American Society of Civil Engineers

6753: If not attached to the nozzle, each low-velocity spray applicator on a MODU must be stowed __________.

    N a. in a protected area on the main deck
    N b. inside a machinery space near the entrance
    Y c. next to the fire hydrant to which the fire hose is attached
    N d. on a rack inside the quarters near the entrance

7371: The condition where a MODU on the end of a tow line is riding a wave crest at the same time as its tug rides a wave crest is known as riding in __________.

    N a. synchronism
    N b. harmony
    N c. check
    Y d. step

8165: The DEEP DRILLER, loaded as shown in Sample Load Form #2 (Ballast to Survival), suffers major damage which results in flooding in tank 1S. Your best countermeasure is to __________.

    Y a. pump from 2S
    N b. pump from C1S
    N c. pump from 1S
    N d. counterflood in 10P

8751: When threatened with a severe storm while operating in 250 feet of water, the COASTAL DRILLER should be placed at an air gap of __________.

    N a. 35 feet
    N b. 32 feet
    N c. 30 feet
    Y d. 25 feet

8793: While drilling loaded as shown in Sample Load Form #4 (Drilling), the DEEP DRILLER suffers a sudden unexpected inclination to port and aft. Strong winds and high waves are from the starboard bow. Among the possible causes, you should consider __________.

    N a. failure of mooring lines 1 or 2
    Y b. failure of mooring lines 3 or 4
    N c. leak in ballast tank #9P
    N d. ballast tanks equalizing into tank 10P

8991: The enclosed area defined as the intersection of the surface of the water and the hull of a vessel is the __________.

    N a. amidships plane
    N b. longitudinal reference plane
    N c. baseline
    Y d. waterplane

9505: With no environmental forces acting on the vessel, the center of gravity of an inclined vessel is vertically aligned with the __________.

    N a. longitudinal centerline
    N b. center of flotation
    N c. original vertical centerline
    Y d. metacenter