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competency Quiz on c12, created by mrk nthny on 06/08/2016.

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mrk nthny
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c12

Questão 1 de 107

1

How does foam extinguish an oil fire?

Selecione uma das seguintes:

  • By excluding the oxygen from the fire

  • By cooling the oil below the ignition temperature

  • By removing the fuel source from the fire

  • By increasing the weight of the oil

Explicação

Questão 2 de 107

1

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

Selecione uma das seguintes:

  • removing the fuel

  • interrupting the chain reaction

  • removing the oxygen

  • removing the heat

Explicação

Questão 3 de 107

1

If a firefighting situation calls for low-velocity fog you would __________.

Selecione uma das seguintes:

  • attach a low-velocity fog applicator with the nozzle shut down

  • order the engine room to reduce pressure on the fire pump

  • put the lever on an all-purpose fire nozzle all the way forward

  • put the lever on an all-purpose fire nozzle all the way back

Explicação

Questão 4 de 107

1

The total available supply of CO2 for use in a fixed extinguishing system of a cargo vessel shall be at least sufficient for_________________.

Selecione uma das seguintes:

  • Space requiring largest amount

  • All cargo-space

  • All the space of the vessel

  • Engine room and largest cargo space

Explicação

Questão 5 de 107

1

A fire is considered 'under control' when________ .

Selecione uma das seguintes:

  • the fire is contained and no longer spreading

  • all hands are at their fire stations

  • all firefighting equipment is at the scene

  • the fixed systems are activated

Explicação

Questão 6 de 107

1

A definite advantage of using water as a fire extinguishing agent is its characteristic of __________.

Selecione uma das seguintes:

  • rapid expansion as water absorbs heat and changes to steam

  • alternate expansion and contraction as water in a liquid state becomes a vapor

  • absorption of smoke and gases as water is converted from a liquid to a vapor

  • rapid contraction as water is converted from a liquid to a vapor

Explicação

Questão 7 de 107

1

At the required fire drill, all persons must report to their stations and demonstrate their ability to perform duties assigned to them ________.

Selecione uma das seguintes:

  • In the Muster List (“Station Bill”)

  • At the previous safety meeting

  • By the person conducting the drill

  • By the Coast Guard regulations

Explicação

Questão 8 de 107

1

You are underway when a fire breaks out in the forward part of your vessel. If possible you should __________.

Selecione uma das seguintes:

  • put the vessel's stern into the wind

  • call for assistance

  • abandon ship to windward

  • keep going at half speed

Explicação

Questão 9 de 107

1

A galley grease fire would be classified as .

Selecione uma das seguintes:

  • Class B

  • Class A

  • Class C

  • Class D

Explicação

Questão 10 de 107

1

In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by __________.

Selecione uma das seguintes:

  • convection

  • conduction

  • radiation

  • ventilation

Explicação

Questão 11 de 107

1

A fire may spread by which of the following means?

Selecione uma das seguintes:

  • conduction

  • transmission

  • contraction

  • ventillation

Explicação

Questão 12 de 107

1

The function of the bypass valve on the self-contained breathing apparatus is to __________.

Selecione uma das seguintes:

  • allow the wearer to manually give himself oxygen

  • control the pressure of the oxygen as it enters the body

  • release excess heat which would otherwise cause the bottle to explode

  • allow exhaled gases to pass outside the bottle

Explicação

Questão 13 de 107

1

Foam extinguishes fire by_______.

Selecione uma das seguintes:

  • Smoothering

  • Cooling

  • Chemical action

  • Inerting the air

Explicação

Questão 14 de 107

1

Extinguishing oil fire is very effective when ________.

Selecione uma das seguintes:

  • Cutting off oxygen source

  • Cooling below its ignition temperature

  • Removing fuel

  • Spraying with water

Explicação

Questão 15 de 107

1

Fuel vents are fitted with corrosion resistant screen to prevent ____.

Selecione uma das seguintes:

  • Flames entering the tank vent

  • Escape of flammable vapors

  • Corrosion in the tank vent

  • Damage to the ball check

Explicação

Questão 16 de 107

1

Which fire extinguishing agent has the greatest capacity for absorbing heat?

Selecione uma das seguintes:

  • Water

  • Foam

  • Carbon dioxide

  • Dry chemical

Explicação

Questão 17 de 107

1

Annual servicing of a hand portable CO2 fire extinguisher includes_________ .

Selecione uma das seguintes:

  • weighing the cylinder and recharging if weight loss exceeds 10% of the weight of the charge

  • inspecting the pressure gauge to ensure the needle is within operating range

  • hydrostatic testing of the cylinder

  • discharging, cleaning inside, and recharging

Explicação

Questão 18 de 107

1

A spark arrestor _______.

Selecione uma das seguintes:

  • prevents sparks from getting out of an engine's exhaust system

  • keeps sparks from falling into an open tank

  • secures covers on ullage openings

  • grounds static electricity

Explicação

Questão 19 de 107

1

On an inspection of your tankship you notice that there are no portable fire extinguishers in the pump room. To comply with regulations, you __________.

Selecione uma das seguintes:

  • should arrange to have a B-II extinguisher placed in the lower pumproom

  • need not be concerned since no portable extinguishers are required in the pumproom

  • should arrange to have a B-II extinguisher placed in the vicinity of the exit

  • may substitute sand for the required extinguishers

Explicação

Questão 20 de 107

1

How often shall crew members participate in fire drills?

Selecione uma das seguintes:

  • once every month

  • once every 6 months

  • once every year

  • once every week

Explicação

Questão 21 de 107

1

All of the following are part of the fire triangle except __________.

Selecione uma das seguintes:

  • electricity

  • oxygen

  • heat

  • fuel

Explicação

Questão 22 de 107

1

What is required in addition to the heat, fuel, and oxygen of the fire triangle to have a fire?

Selecione uma das seguintes:

  • Chain reaction

  • Pressure

  • Smoke

  • Electricity

Explicação

Questão 23 de 107

1

Fire alarm system thermostats are actuated by __________.

Selecione uma das seguintes:

  • the difference in thermal expansion of two dissimilar metals

  • smoke sensors

  • pressure loss due to air being heated

  • an electric eye which actuates when smoke interferes with the beam

Explicação

Questão 24 de 107

1

The supply of carbon dioxide used in the fixed extinguishing system aboard a cargo vessel must be at least sufficient for __________.

Selecione uma das seguintes:

  • the space requiring the largest amount

  • the engine room and largest cargo space

  • all cargo spaces

  • all the spaces of a vessel

Explicação

Questão 25 de 107

1

Valves on steam-smothering lines to cargo tanks shall be set with __________.

Selecione uma das seguintes:

  • the master control valve shut and valves to individual cargo tanks open

  • the master control valve shut and valves to individual cargo tanks shut

  • the master control valve open and valves to individual cargo tanks shut

  • all valves open

Explicação

Questão 26 de 107

1

What is the function of the bypass valve on the self-contained breathing apparatus?

Selecione uma das seguintes:

  • In the event of a malfunction in the equipment, the valve can be operated manually to give the wearer air.

  • The valve opens in excessive heat to release the oxygen in the bottle and prevent the bottle from exploding.

  • When pressure in the apparatus exceeds 7 psi above atmospheric pressure, the valve opens to release pressure.

  • The valve reduces the high pressure in the bottle to about 3 psi above atmospheric pressure.

Explicação

Questão 27 de 107

1

You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed __________.

Selecione uma das seguintes:

  • at the seat of the fire, starting at the near edge

  • to bank off a bulkhead onto the fire

  • over the top of the fire

  • at the main body of the fire

Explicação

Questão 28 de 107

1

You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed __________.

Selecione uma das seguintes:

  • at the seat of the fire, starting at the near edge

  • to bank off a bulkhead onto the fire

  • over the top of the fire

  • at the main body of the fire

Explicação

Questão 29 de 107

1

You are fighting a fire in the electrical switchboard in the engine room. You should secure the power, then __________.

Selecione uma das seguintes:

  • use a portable CO2 extinguisher

  • use a portable foam extinguisher

  • use a low-velocity fog adapter with the fire hose

  • determine the cause of the fire

Explicação

Questão 30 de 107

1

When two fire hose teams are attacking a fire they should __________.

Selecione uma das seguintes:

  • not attack the fire from opposite sides

  • use different fire hose pressures

  • use fire hoses of different sizes

  • not wear protective clothing

Explicação

Questão 31 de 107

1

The smoke detector (fire indicator) indicates fire in a cargo hold loaded by general cargo. What first action should be taken?

Selecione uma das seguintes:

  • Close the ventilation system and other openings to the hold in order to choke the fire

  • Use the ship's gas extinguishing central system to put out the fire

  • Inspect the scene before deciding the method to be used for fire-fighting

  • Start the fire pumps, open the hatches and start fighting the fire by fire hoses

Explicação

Questão 32 de 107

1

Which extinguishing agent is most likely to allow reflash as a result of not cooling the fuel below its ignition temperature?

Selecione uma das seguintes:

  • CO2

  • Water stream

  • Water spray

  • Foam

Explicação

Questão 33 de 107

1

Combustible gas indicators operate by drawing an air sample into the instrument _______.

Selecione uma das seguintes:

  • over an electrically heated platinum filament

  • where it is mixed with nitrogen

  • where it is ignited by a sparking device

  • where its specific gravity is measured

Explicação

Questão 34 de 107

1

Which of the following fire extinguishing agents has the greatest capacity for heat absorption?

Selecione uma das seguintes:

  • Water fog

  • Dry chemical

  • Chemical foam

  • Carbon dioxide

Explicação

Questão 35 de 107

1

A liquid, as listed on a Material Safety Data Sheet (MSDS) having a flash point at or above 100°F is called a/an ____________.

Selecione uma das seguintes:

  • combustible liquid

  • explosive liquid

  • flammable liquid

  • viscous liquid

Explicação

Questão 36 de 107

1

The MAIN objection to the use of a dry chemical fire extinguisher on an electrical fire is that the __________.

Selecione uma das seguintes:

  • dry chemical leaves a powder residue which may render electrical equipment inoperative

  • extinguishing action is not as good as with soda acid

  • powder conducts electricity back to the fire fighter

  • extinguisher will need to be recharged

Explicação

Questão 37 de 107

1

Which of the documents below identifies chemical listings, its physical properties, health hazards as well as firefighting procedures?

Selecione uma das seguintes:

  • Material Safety Data Sheet

  • Hazardous Chemical Information Sheet

  • Hazardous Chemical Loading Document

  • Chemical Characteristics Document

Explicação

Questão 38 de 107

1

Through which of the listed process is sufficient heat produced to cause spontaneous ignition?

Selecione uma das seguintes:

  • Heat of oxidation

  • Heat of expansion

  • Latent heat of sublimation

  • Latent heat of condensation

Explicação

Questão 39 de 107

1

Gasoline is a flammable liquid whose vapors are ___________.

Selecione uma das seguintes:

  • all of the above

  • heavier than air

  • toxic

  • highly explosive

Explicação

Questão 40 de 107

1

Which of the petroleum products listed has the lowest flash point?

Selecione uma das seguintes:

  • Diesel oil

  • Hydraulic oil

  • Lubricating oil

  • Refrigeration oil

Explicação

Questão 41 de 107

1

When firing a pyrotechnic distress signal, it should be aimed__________.

Selecione uma das seguintes:

  • approximately 60° above the horizon

  • into the wind

  • straight ahead

  • at the vessel whose attention you want to attract

Explicação

Questão 42 de 107

1

Which of the following statements concerning chemical foam is TRUE?

Selecione uma das seguintes:

  • It is formed as a result of the reaction between dry powder and water.

  • It is recommended for use on fires in main propulsion electric motors.

  • Foam bubbles are formed as a result of mechanical mixing with air.

  • It is useful in fighting chemicals fires only.

Explicação

Questão 43 de 107

1

Who is responsible to the Operation Manager for the technical aspects and seaworthiness of the ships, except for the engineering spaces and personnel?

Selecione uma das seguintes:

  • Marine Superintendent

  • Master

  • Designated Person Ashore

  • Fleet manager

Explicação

Questão 44 de 107

1

What is the purpose of adopting international convention onboard?

Selecione uma das seguintes:

  • Provide uniform practice

  • Port state control implementation

  • Avoid accident onboard

  • To confirm with requirements

Explicação

Questão 45 de 107

1

In firefighting, the term 'protecting exposures' means _____________.

Selecione uma das seguintes:

  • taking measures to prevent the spread of fire from the involved compartment to an adjacent compartment

  • protecting fire fighters from direct exposure to the heat of the fire

  • keeping flames from burning at the tank vents

  • protecting exposed areas of the superstructure from flames

Explicação

Questão 46 de 107

1

What is the main reason of implementing provisions on International Conferences or Convention onboard?

Selecione uma das seguintes:

  • Provide uniform practice.

  • Reduce accidents at sea.

  • Port State recommendations

  • Class Society recommendations

Explicação

Questão 47 de 107

1

Automatically closed fire dampers installed in the vessel's ventilation system are operated by the use of a ____________.

Selecione uma das seguintes:

  • fusible link

  • remote operated valve

  • CO2 system pressure switch

  • heat or smoke detector

Explicação

Questão 48 de 107

1

If the crew are still on board and salvage tug is around, what would the master do if it is determined that saving the ship is not possible?

Selecione uma das seguintes:

  • Abandonship and let go

  • Save the ship

  • Don't abandonship

  • Contact coast guard

Explicação

Questão 49 de 107

1

Mechanically foam used for firefighting is produced by mechanically mixing and agitating ___________.

Selecione uma das seguintes:

  • foam chemical with air and water

  • soda acid and water

  • dry chemical and water

  • bicarbonate soda with air and water

Explicação

Questão 50 de 107

1

Which is NOT a mandatory requirement of the shipboard oil pollution emergency plan?

Selecione uma das seguintes:

  • Diagrams

  • Steps to control a discharge

  • National and local coordination

  • Reporting requirements

Explicação

Questão 51 de 107

1

What is termed as the process of killing the ineffective bacteria from the water so as to make it safe for drinking?

Selecione uma das seguintes:

  • Disinfection

  • Sterilization

  • Tri-oxidation

  • Ultra-hydration

Explicação

Questão 52 de 107

1

Which of the following statements is true concerning Aqueous Film Forming Foam (AFFF)?

Selecione uma das seguintes:

  • AFFF controls the vaporization of flammable liquids by means of a water film.

  • The agent cannot be used in conjunction with dry chemicals.

  • AFFF can only be produced from fresh water.

  • Because AFFF works through surface tension, it can not be broken up if it is agitated.

Explicação

Questão 53 de 107

1

What is a major advantage of using a positive pressure type self-contained breathing apparatus?

Selecione uma das seguintes:

  • The speed with which it can be put into operation is around 45 seconds.

  • The equipment is lightweight and the wearer can work without difficulty in confined spaces.

  • The average operating time is over an hour.

  • Facial hair will not affect the mask performance.

Explicação

Questão 54 de 107

1

Which of the following conditions is true concerning flammable liquid vapors with a concentration above the explosive limit?

Selecione uma das seguintes:

  • The mixture is too rich to burn.

  • The mixture is too lean to burn.

  • The vapor is about to explode.

  • Conditions are perfect for combustion.

Explicação

Questão 55 de 107

1

According to the Pollution Prevention Regulation, who makes final decision of when oil transfer may begin?

Selecione uma das seguintes:

  • The designated persons in charge of vessel and facility

  • The senior deck officer

  • The captain of the port

  • Any local coast guard representative

Explicação

Questão 56 de 107

1

During man overboard situation, the first person who saw the incident shall _______ .

Selecione uma das seguintes:

  • throw a life ring and inform the bridge

  • throw a life ring and shout for help

  • shout for help and do not lose sight of the man in the water

  • throw a marker and inform any deck officer around

Explicação

Questão 57 de 107

1

Why an upper limit switch is used when handling lifeboat equipment?

Selecione uma das seguintes:

  • To prevent the davits from pulling up against the stops

  • To keep the tricing line from releasing or getting tangled

  • To assist in cranking in the lifeboat

  • To stop the lifeboat from being lowered

Explicação

Questão 58 de 107

1

“Dry Powder” fire extinguishers, which contain a mixture of graphite and sodium chloride as the extinguishing agent, are generally used to fight which type of fire?

Selecione uma das seguintes:

  • Class D

  • Class B

  • Class C

  • Class A

Explicação

Questão 59 de 107

1

Which of the following fire extinguishing agents has the greatest capacity for heat absorption?

Selecione uma das seguintes:

  • Water fog

  • Dry chemical

  • Chemical foam

  • Carbon dioxide

Explicação

Questão 60 de 107

1

Mechanically foam used for firefighting is produced by mechanically mixing and agitating ___________.

Selecione uma das seguintes:

  • foam chemical with air and water

  • soda acid and water

  • dry chemical and water

  • bicarbonate soda with air and water

Explicação

Questão 61 de 107

1

Which of the following statements is true concerning Aqueous Film Forming Foam (AFFF)?

Selecione uma das seguintes:

  • AFFF controls the vaporization of flammable liquids by means of a water film.

  • The agent cannot be used in conjunction with dry chemicals.

  • AFFF can only be produced from fresh water.

  • Because AFFF works through surface tension, it can not be broken up if it is agitated.

Explicação

Questão 62 de 107

1

Which of the following statements concerning chemical foam is TRUE?

Selecione uma das seguintes:

  • It is formed as a result of the reaction between dry powder and water.

  • It is recommended for use on fires in main propulsion electric motors.

  • Foam bubbles are formed as a result of mechanical mixing with air.

  • It is useful in fighting chemicals fires only.

Explicação

Questão 63 de 107

1

Chemical foam is most suitable for use on a fire involving _____________.

Selecione uma das seguintes:

  • oil

  • burning insulation

  • hot bulkheads

  • electrical machinery

Explicação

Questão 64 de 107

1

Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?

Selecione uma das seguintes:

  • Its smothering effect is excellent for class B fires.

  • Carbon dioxide is corrosive when exposed to fire.

  • Carbon dioxide should be applied slowly to a large engine room fire.

  • Its total cooling effect is far greater than water

Explicação

Questão 65 de 107

1

The MAIN objection to the use of a dry chemical fire extinguisher on an electrical fire is that the __________.

Selecione uma das seguintes:

  • dry chemical leaves a powder residue which may render electrical equipment inoperative

  • extinguishing action is not as good as with soda acid

  • powder conducts electricity back to the fire fighter

  • extinguisher will need to be recharged

Explicação

Questão 66 de 107

1

Through which of the listed process is sufficient heat produced to cause spontaneous ignition?

Selecione uma das seguintes:

  • Heat of oxidation

  • Heat of expansion

  • Latent heat of sublimation

  • Latent heat of condensation

Explicação

Questão 67 de 107

1

Fires resulting from “spontaneous combustion” are usually caused by the improper disposal of________.

Selecione uma das seguintes:

  • oily rags

  • cigarette butts

  • burner torches

  • lighted matches

Explicação

Questão 68 de 107

1

Which of the following conditions is true concerning flammable liquid vapors with a concentration above the explosive limit?

Selecione uma das seguintes:

  • The mixture is too rich to burn.

  • The mixture is too lean to burn.

  • The vapor is about to explode.

  • Conditions are perfect for combustion.

Explicação

Questão 69 de 107

1

Which of the petroleum products listed has the lowest flash point?

Selecione uma das seguintes:

  • Diesel oil

  • Hydraulic oil

  • Lubricating oil

  • Refrigeration oil

Explicação

Questão 70 de 107

1

Gasoline is a flammable liquid whose vapors are ___________.

Selecione uma das seguintes:

  • all of the above

  • heavier than air

  • toxic

  • highly explosive

Explicação

Questão 71 de 107

1

Which of the listed tanks present the greatest potential for an explosion?

Selecione uma das seguintes:

  • A partially filled tank of diesel oil

  • A full tank of diesel oil

  • A full tank of lubricating oil

  • A partially filled tank of hydraulic oil

Explicação

Questão 72 de 107

1

A liquid, as listed on a Material Safety Data Sheet (MSDS) having a flash point at or above 100°F is called a/an ____________.

Selecione uma das seguintes:

  • combustible liquid

  • explosive liquid

  • flammable liquid

  • viscous liquid

Explicação

Questão 73 de 107

1

If a fire hose is left unattended and under pressure with the nozzle shut off, the fire hose will _____.

Selecione uma das seguintes:

  • Remain motionless

  • Burst under pressure

  • Lash about violently

  • Become elongated by 125%

Explicação

Questão 74 de 107

1

Fire main outlet valves or hydrants located on e decks shall be in _____.

Selecione uma das seguintes:

  • protected against freezing or be fitted with valves and drain valves

  • behind glass or a suitably marked enclosure

  • opened up and internally examined at each Coast Guard biannual inspection for certification

  • open area or at the gangway near the emergency hallway

Explicação

Questão 75 de 107

1

Automatically closed fire dampers installed in the vessel's ventilation system are operated by the use of a ____________.

Selecione uma das seguintes:

  • fusible link

  • remote operated valve

  • CO2 system pressure switch

  • heat or smoke detector

Explicação

Questão 76 de 107

1

In firefighting, the term 'protecting exposures' means _____________.

Selecione uma das seguintes:

  • taking measures to prevent the spread of fire from the involved compartment to an adjacent compartment

  • protecting fire fighters from direct exposure to the heat of the fire

  • keeping flames from burning at the tank vents

  • protecting exposed areas of the superstructure from flames

Explicação

Questão 77 de 107

1

If a fire occurs in an electric cable, in which the inner layers of insulation have burned, you should FIRST _________.

Selecione uma das seguintes:

  • secure power to the cable

  • cut the cable with a cable cutter

  • insulate the melted ends

  • remove the electrical load on the cable

Explicação

Questão 78 de 107

1

According to 46 CFR's Part 96, what is the minimum period of time that an approved self-contained breathing apparatus (SCBA) is required to provide an air supply?

Selecione uma das seguintes:

  • 30 minutes

  • 10 minutes

  • 15 minutes

  • 60 minutes

Explicação

Questão 79 de 107

1

Which unit will provide excellent mobility to the wearer in an unsafe atmosphere and provide oxygen to sustain life?

Selecione uma das seguintes:

  • A self-contained breathing apparatus

  • A fresh air breathing apparatus

  • An ammonia gas mask

  • Immersion suit

Explicação

Questão 80 de 107

1

What is a major advantage of using a positive pressure type self-contained breathing apparatus?

Selecione uma das seguintes:

  • The speed with which it can be put into operation is around 45 seconds.

  • The equipment is lightweight and the wearer can work without difficulty in confined spaces.

  • The average operating time is over an hour.

  • Facial hair will not affect the mask performance.

Explicação

Questão 81 de 107

1

When firing a pyrotechnic distress signal, it should be aimed__________.

Selecione uma das seguintes:

  • approximately 60° above the horizon

  • into the wind

  • straight ahead

  • at the vessel whose attention you want to attract

Explicação

Questão 82 de 107

1

In lifeboat situations, which of the following visual distress signals is acceptable for daylight use only?

Selecione uma das seguintes:

  • Orange smoke signal

  • Handled red flare

  • Self-contained rocket propelled parachute red flare

  • Red aerial pyrotechnic flare

Explicação

Questão 83 de 107

1

Which of the following conditions represents the appropriate time for setting off distress flares and rockets?

Selecione uma das seguintes:

  • Only when there is a chance of them being seen by rescue vessels

  • At half-hour intervals

  • At one hour intervals

  • Immediately upon abandoning the vessel

Explicação

Questão 84 de 107

1

When using a handheld smoke signal aboard a survival craft, you should activate the signal_________.

Selecione uma das seguintes:

  • on the downwind side of the craft

  • on the upwind side of the craft

  • inside the craft

  • at the stern of the craft

Explicação

Questão 85 de 107

1

A distress___________.

Selecione uma das seguintes:

  • may be used individually in conjunction with other distress signals

  • consists of 5 or more short blasts of the fog signal apparatus

  • consists of the raising and lowering of a large white flag

  • is used to indicate doubt about another vessel’s intensions

Explicação

Questão 86 de 107

1

After having activated the emergency position indicating radio beacon, you should ____________.

Selecione uma das seguintes:

  • leave it on continuously

  • turn it off for five minutes every half-hour

  • turn it off and on at five minute intervals

  • turn it off during daylight hours

Explicação

Questão 87 de 107

1

If you have to abandon ship, the EPIRB can be used to _____________.

Selecione uma das seguintes:

  • send radio homing signals to searching aircraft

  • hold the lifeboat's head up into the seas

  • generate orange smoke

  • seal leaks in rubber rafts

Explicação

Questão 88 de 107

1

The centrifugal brake mechanism incorporated in a lifeboat handling winch is intended to _________.

Selecione uma das seguintes:

  • automatically control the speed of lowering by gravity

  • automatically stop the boat if electric power fails

  • mechanically stop the boat when the hand break fails

  • hold the load suspended during lowering operations

Explicação

Questão 89 de 107

1

After the lifeboat has reached the top of the davit heads, the davit arms begin moving up the tracks until the movement is stopped by the __________.

Selecione uma das seguintes:

  • limit switch

  • hoist man

  • brake handle

  • preventer bar

Explicação

Questão 90 de 107

1

Limit switches on gravity davits should be tested by __________.

Selecione uma das seguintes:

  • pushing the switch lever arm while the winch is running

  • the engineers, from a panel in the engine room

  • shutting off the current to the winch

  • it can be tested as long as the port surveyor is the one inspecting it

Explicação

Questão 91 de 107

1

When abandoning ship, after launching the motor lifeboat you should __________.

Selecione uma das seguintes:

  • stay in the immediate area

  • plot course for nearest land

  • go only with the direction of the sea

  • go one direction until fuel runs out

Explicação

Questão 92 de 107

1

If you are forced to abandon ship in a lifeboat, you should _______.

Selecione uma das seguintes:

  • remain in the immediate vicinity

  • head for the nearest land

  • head for the closest sea-lanes

  • vote on what to do, so all hands will have a part in the decision

Explicação

Questão 93 de 107

1

Using a sea anchor with the survival craft will ___________.

Selecione uma das seguintes:

  • reduce your drift rate

  • keep the survival craft from turning over

  • aid in recovering the survival craft

  • increase your visibility

Explicação

Questão 94 de 107

1

All personnel should be familiar with the lifeboats _________.

Selecione uma das seguintes:

  • boarding and operating procedures

  • maintenance schedule

  • navigational system

  • fuel consumption rates

Explicação

Questão 95 de 107

1

Engines for lifeboats are required to have sufficient fuel to operate for how many hours?

Selecione uma das seguintes:

  • 24 hours

  • 6 hours

  • 12 hours

  • 18 hours

Explicação

Questão 96 de 107

1

When a rescue vessel approaches a survival craft in heavy seas, the person in charge of the survival craft should ________.

Selecione uma das seguintes:

  • wait for calmer weather before transferring personnel

  • tie up the rescue vessel

  • transfer only those who are seasick

  • transfer all personnel immediately

Explicação

Questão 97 de 107

1

The purpose for the bag or box on top of some survival craft is to ______________.

Selecione uma das seguintes:

  • right it in case of capsize

  • increase area for radar detection

  • act as a sail in case of a power loss

  • steady the craft in heavy seas

Explicação

Questão 98 de 107

1

Which of the lifeboat parts listed must be painted bright red?

Selecione uma das seguintes:

  • Releasing gear lever

  • Hatches

  • Boat hooks

  • Compass

Explicação

Questão 99 de 107

1

Fire and lifeboat stations are required to be listed on the _____________.

Selecione uma das seguintes:

  • muster list

  • ship's articles

  • bunk card

  • forecastle card

Explicação

Questão 100 de 107

1

A hydrostatic release mechanism for a liferaft ____________.

Selecione uma das seguintes:

  • must be submerged to a certain depth to release automatically

  • must be wet before it will release

  • should be kept in a watertight cover except in an emergency

  • will inflate the raft in its cradle if operated manually

Explicação

Questão 101 de 107

1

Which of the following operations should be carried out when launching an inflatable liferaft by hand?

Selecione uma das seguintes:

  • Make sure the operating cord is secured to the vessel before throwing it over the side

  • Open the liferaft casing

  • Turn the valve on the CO2 cylinder to start inflation

  • After inflation, detach operating cord from liferaft

Explicação

Questão 102 de 107

1

If an inflatable liferaft inflates upside down, you can right it by ________________.

Selecione uma das seguintes:

  • standing on the CO2 bottle, holding the bottom straps, and throwing your weight backwards

  • pushing up on one side.

  • getting at least three or four men to push down on the side containing the CO2 cylinder

  • doing nothing, it will right itself after the canopy supports inflate

Explicação

Questão 103 de 107

1

" You have abandoned ship in tropical waters. Which procedure(s) should be used during a prolonged peroid in a raft? I. Wet clothes during the day to decrease perpiration.
II. Get plenty of rest.
III. Keep the entrance curtins open."

Selecione uma das seguintes:

  • I, II and III

  • I only

  • II only

  • III only

Explicação

Questão 104 de 107

1

When a ship is abandoned and there are several liferafts in the water, one of the FIRST things to be done is __________.

Selecione uma das seguintes:

  • secure the rafts together to keep them from drifting apart

  • separate the rafts as much as possible to increase chances of detection

  • transfer all supplies to one raft

  • transfer all the injured to one raft

Explicação

Questão 105 de 107

1

When the machinery spaces on a tank vessel are protected by a fixed foam extinguishing system, what additional protection is required by Regulations (46 CFR) outside of the machinery space entrance?

Selecione uma das seguintes:

  • Two fire hydrants with hose, nozzle and application

  • One portable foam extinguisher

  • Ten cubic feet of sand of with scoop

  • One semi-portable CO2 extinguisher

Explicação

Questão 106 de 107

1

The primary function of an automatic sprinkler system is to______.

Selecione uma das seguintes:

  • limit the spread of the fire and control the amount of heat produced

  • instantaneously extinguish the fire which triggered it

  • protect people in the areas which have had sprinkler heads installed

  • alert the crew to the fire

Explicação

Questão 107 de 107

1

A fireman's outfit carried onboard cargo vessels, must have a _____.

Selecione uma das seguintes:

  • self-contained breathing apparatus

  • canister -type gas mask

  • fresh -air breathing apparatus

  • combustible gas indicator

Explicação