Sub Deck General & Safety Flashcards
The class of fire on which a blanketing effect is essential is class…
A
B
C
D
B
Dry chemical extinguishers may be used on what class of fires?
A only
B only
B and C only
A, B or C as marked on the extinguisher
A, B or C as marked on the extinguisher
All of the following are part of the fire triangle EXCEPT…
Electricity
Fuel
Oxygen
Heat
Electricity
Fire extinguishers are numbered by size I through V, with I being…
Used for electrical fires only
The smallest
The most accessible
The most effective
The smallest
Which statement is TRUE concerning carbon dioxide?
It is heavier than air
It is non-conductive
It is used on class B and C fires
All of the above are true
All of the above are true
Fixed CO2 systems would not be used on crew’s quarters or…
The paint locker
Spaces open to the atmosphere
Cargo holds
The engine room
spaces open to the atmosphere
The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all purpose nozzle is due to…
A difference in water pressure
The method of breaking up the water stream
The length of the applicator
All of the above
The method of breaking up the water stream
What is the primary hazard, other than fire damage, associated with a class C fire?
Possibility of reflash
Electrocution or shock
Explosion
Flashover
Electrocution or shock
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to…
Shield fire fighters from radiant heat
Break up burning material
Get the most water possible on the fire
Drive heat and smoke ahead of the fire fighters
Break up burning material
The spread of fire is prevented by…
Cooling surfaces adjacent to the fire
Leaving combustibles in the endangered area
Increasing the oxygen supply
All of the above
Cooling surfaces adjacent to the fire
Fires are grouped into what categories?
Class A, B, C, and D
Type 1, 2, 3, and 4
Combustible solids, liquids, and gases
Flammable solids, liquids, and gases
Class A, B, C, and D
What is an advantage of water fog or water spray over a straight stream of water in fighting an oil fire?
It has a smothering effect on the fire
It requires less water to remove the same amount of heat
It gives more protection to fire fighting personnel
All of the above
All of the above
Before using a fixed CO2 system to fight an engine room fire, you must…
Secure the engine room ventilation
Secure the machinery in the engine room
Evacuate all personnel from the engine room
All of the above
All of the above
A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the…
Fire hose might be damaged by cargo operations
Vessel is in port
Fire-main system is not charged
Fire pumps are used for purposes other than supplying water to the fire main
Fire hose might be damaged by cargo operations
You can determine that a CO2 fire extinguisher is fully charged by…
Looking at the gauge
Checking the nameplate data
Weighing by hand
Weighing on a properly calibrated scale
Weighing on a properly calibrated scale
A fire in a pile of linen is a class…
A
B
C
D
A
What is the most important characteristic of the extinguishing agent in fighting a class “C” fire?
Weight
Temperature
Electrical non-conductivity
Cost
Electrical non-conductivity
One of the limitations of foam as an extinguishing agent is that foam…
Cannot be made with salt water
Is heavier than oil and sinks below its surface
Is corrosive and a hazard to fire fighters
Conducts electricity
Conducts electricity
Which extinguishing agent will absorb the most heat?
CO2
Foam
Water
Dry chemical
Water
To prevent the spread of fire by conduction you should…
Shut off all electrical power
Close all openings to the area
Remove combustibles from direct exposure
Cool the bulkheads around the fire
Cool the bulkheads around the fire
Removing which will extinguish a fire?
Nitrogen
Carbon dioxide
Sodium
Oxygen
Oxygen
All portable fire extinguishers must be capable of being…
Carried by hand to a fire
Carried or rolled to a fire
Recharged in the field
Used on class “B” fires
Carried by hand to a fire
Foam extinguishes a fire mainly by…
Cooling
Chemical action
Smothering
Inerting the air
Smothering
Fire extinguishers of sizes III, IV, and V are designated as…
Portable
Semi-portable
Fixed
Disposable
Semi-portable
The disadvantage of using CO2 is that the…
CO2 does not cool the fire
Cylinders are regulated pressure vessels
C02 is not effective on class “B” fires
C02 is not effective on class “C” fires
CO2 does not cool the fire
Convection spreads a fire by…
The transfer of heat across an unobstructed space
Burning liquids flowing into another space
Transmitting the heat of a fire through the ship’s metal
Heated gases flowing through ventilation systems
Heated gases flowing through ventilation systems
How do you operate a portable CO2 fire extinguisher?
Point the horn down
Turn cylinder upside-down
Break the rupture disc
Pull pin, squeeze grip
Pull pin, squeeze grip
The most effective cooling agent among those normally used to fight fires is…
Water fog or spray
Chemical foam
Mechanical foam
Carbon dioxide
Water fog or spray
Ventilation systems connected to a compartment in which a fire is burning are normally closed to prevent the rapid spread of the fire by…
Convection
Conduction
Radiation
Spontaneous combustion
Convection
Fire may be spread by which means?
Conduction of heat to adjacent surfaces
Direct radiation
Convection
All of the above
All of the above
If a gasoline engine turns over freely but will not start, the cause is generally…
A defective ignition system
Low lube oil level
Weak valve springs
Too heavy a load
A defective ignition system
When fueling has been completed….
The fuel tank fill pipe should be left open to allow vapors to vent from the tank
The engine should be started immediately to prevent vapor lock in the fuel line
All hatches should be opened and all compartments should be ventilated
Open the fuel line and drain a small amount of gasoline into the bilge to clear the line of sediment
All hatches should be opened and all compartments should be ventilated
Gasoline tanks should be filled…
To the top to expel all vapors from the tanks
To the top so the operator is certain how much fuel he has aboard
With only sufficient fuel for the planned trip so excess gasoline is not carried
To near the top with some space allowed for gasoline expansion
To near the top with some space allowed for gasoline expansion
Gasoline fumes tend to…
Settle near the bottom of the bilge
Settle near the top of the bilge
Settle evenly throughout all levels of the bilge by mixing with air
Disperse to atmosphere
Settle near the bottom of the bilge
How should the exhaust of a properly operating diesel engine appear?
Light blue haze
Light brown haze
Light gray haze
Perfectly clear
Perfectly clear
The nozzle of a gasoline hose or can should be kept…
In contact with the fill opening to guard against static spark
From making contact with the fill opening to guard against static spark
In contact with the fill opening to allow proper venting
None of the above
In contact with the fill opening to guard against static spark
Your vessel has a gasoline engine and a mechanical exhaust ventilation system. BEFORE starting the engine, the exhaust blower should be run long enough to…
Warm up the exhaust blower motor
Provide a proper supply of fresh air for the engine(s)
See the system is in good operating condition
Insure at least one complete change of air in the compartments concerned
Insure at least one complete change of air in the compartments concerned
To find the cause of a gasoline engine’s failure to start, you should…
Break the joint in the fuel line at the engine and let the gas run in the bilges
Disconnect the wires at the spark plugs and make the spark jump the gap
Prime the engine with either through the spark plug openings
Ventilate the space, then check the battery, spark plugs, carburetor, and fuel line
Ventilate the space, then check the battery, spark plugs, carburetor, and fuel line
Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by…
Spark plugs
Glow plugs
Heat of compression
A magneto
Heat of compression
The shut off valve at the gasoline tank, which can be, operated from outside the tank space…
Controls the amount of gasoline to the engine
Shuts off the gasoline supply at the tank
Is used if the gasoline tank leaks
All of the above
Shuts off the gasoline supply at the tank
You receive a call from the U.S. Coast Guard addressed to all stations. The call begins with the words “Pan-Pan” (3 times). Which type of emergency signal would this be?
Safety signal
Urgency signal
Distress signal
Red alert signal
Urgency signal
All VHF marine band radios operate in the simplex mode, which means that…
Only one person may talk at a time
Only two persons may talk at a time
The radio only transmits
The radio only receives
Only one person may talk at a time
A Coast Guard radiotelephone message about an aid to navigation that is off station is preceded by the word…
“PAN-PAN”
“MAYDAY”
“SOS”
“SECURITY”
“SECURITY”
The radiotelephone safety message urgently concerned with safety of a person would be prefixed by the word…
Mayday
Pan
Safety
Interco
Pan
Which system is most likely to be affected by atmospheric disturbances?
MF/HF radiotelephone
VHF DSC
INMARSAT
Safety NET
MF/HF radiotelephone
Which word is an international distress signal when transmitted by radiotelephone?
Securite
Mayday
Breaker
Pan
Mayday
If you are transmitting a distress message by radiotelephone you should ___________.
Use English language
Always use the International Code
Preface it by the word “interco”
Follow the transmission with the radio alarm signal
Use English language
What is the minimum size power-driven vessel, not engaged in towing, required to comply with the vessel bridge-to-bridge radiotelephone regulations?
50 meters
25 meters
20 meters
12 meters
20 meters
The VHF radiotelephone frequency designated to be used only to transmit or receive information pertaining to the safe navigation of a vessel is…
- 8 MHz (channel 16)
- 7 MHz (channel 14)
- 65 MHz (channel 13)
- 6 MHz (channel 12)
156.65 MHz (channel 13)
Which vessels must comply with the vessel bridge-to-bridge radiophone regulations while navigating?
Towing vessels 25 feet in length or less
Passenger vessels of 100 gross tons or greater, carrying one or more passengers for hire
Power-driven vessels 12 meters or less in length
All of the above
If you wished to transmit a message by voice concerning the safety of navigation, you
Passenger vessels of 100 gross tons or greater, carrying one or more passengers for hire
If you wished to transmit a message by voice concerning the safety of navigation, you would preface it by the word…
Mayday
Pan-pan
Securite
Safety
Securite
In radiotelephone communications, the prefix PAN-PAN indicates that…
A ship is threatened by grave and imminent danger and requests immediate assistance
A calling station has an urgent message about the safety of a person
The message following the prefix will be about the safety of navigation
The message following is a meteorological warning
A calling station has an urgent message about the safety of a person
The reception of weak radio signals may be improved by “opening up” the squelch control. What is the normal setting of the squelch control?
Adjust the squelch control until the noise (static) can be heard, then adjust it slightly in the opposite direction until the noise stops
Completely closed with the volume at the highest level
Completely open with the volume at the lowest level
None of the above
Adjust the squelch control until the noise (static) can be heard, then adjust it slightly in the opposite direction until the noise stops
The height of a VHF radio antenna is more important than the power output wattage of the radio because…
VHF communications are basically “line of sight”
The air is more dense the higher you go
Salt water is a poor conductor of sound
Sea water absorbs the radiated energy
VHF communications are basically “line of sight”
The national distress, safety, and calling frequency is channel…
13
16
18
22
16
An inflatable liferaft is thrown into the water from a sinking vessel. What occurs automatically after the painter trips the CO2 bottles to inflate the raft?
The sea anchor deploys
The floor inflates
If upside down, the craft rights itself
The painter detaches from the raft
The sea anchor deploys
If you find an inflatable liferaft container with steel bands around the case, you should…
Tell the Master
Leave the bands in place
Tell the Mate
Remove the bands yourself
Leave the bands in place
When will the float-free emergency position indicating radio beacon be Activated after abandoning ship?
Immediately after floating free
After about one hour when the salt water activates the battery
Only when keyed by the radar of another vessel
Only when daylight activates the photovoltaic cell
Immediately after floating free
The knife on an inflatable liferaft will always be located…….
In one of the equipment bags
In a special pocket near the forward entrance
On a cord hanging from the canopy
In a pocket on the first aid kit
In a special pocket near the forward entrance
Which approved lifesaving device is required for each person onboard a motor vessel carrying passangers?
Buoyant cushion
Buoyant vest
Life jacket
Ring life buoy
Life jacket
What does “EPIRB” stand for?
Emergency Position Indicating Radar Buoy
Electronic Pulse Indicating Radiobeacon
Emergency Position Indicating Radiobeacon
None of the above
Emergency Position Indicating Radiobeacon
Every vessel that operates on the high seas, or beyond 3 miles from the coastline of the Great Lakes must have a Category I 406 MHz EPIRB that..
Is in good operating condition and is stowed near its charger
Will float free and clear of the sinking vessel and automatically activate
Is protected against all physical hazards
All of the above
Will float free and clear of the sinking vessel and automatically activate
Which statement is TRUE concerning life preservers (Type I personal flotation devices)?
Buoyant vests may be substituted for life jackets
Life preservers are designed to turn an unconscious person’s face clear of the water
Life preservers must always be worn with the same side facing outwards to float properly
Lightly stained or faded life jackets will fail in the water and should not be used
Life preservers are designed to turn an unconscious person’s face clear of the water
The lights on the outside of the canopy on an inflatable liferaft operate ………….
By turning the globe clockwise
By a switch by each light
By a light sensor
Automatically when the raft is inflated
Automatically when the raft is inflated
Which vessel is required to carry a Category I, 406 MHz EPIRB?
A vessel operating exclusively on inland waters
A vessel limited to 20 miles offshore, which carries a radiotelephone on board
A vessel operating on the high seas or beyond 3 miles from the coastline of the Great Lakes
A vessel limited to 100 miles offshore
A vessel operating on the high seas or beyond 3 miles from the coastline of the Great Lakes