A.keep the propeller from being fouled
B.increase propeller speed
C.help calm the waves in the vicinity of the craft
D.increase the holding power of the sea anchor
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A.immediately reverse the engines
B.stop the propellers from turning and throw a ring buoy over the side
C.increase speed to full to get the vessel away from the person
D.first put the rudder hard over in either direction
A.the other services are run off a reducing station with a pressure gage
B.a separate fire pump is available for use on the fire main
C.all other services are operated by a manifold near the pump
D.All of the above
A.boathook
B.fishing kit
C.lifeline or grab rail
D.sea painter
A.cutting off the supply of oxygen
B.removing the fuel
C.cooling below the ignition temperature
D.spraying with water
A.on line to the fire main
B.kept available for use on the fire main at all times
C.capable of being connected to the fire main
D.rated at or above 125 psi
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Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces，such as in a pumproom，provided that the（）.
Separation cloths may be used to（）.
Any vessel in need of carrying out deck washing must be（）by the department concerned beforehand.
A negative metacentric height（）.
An obstruction on a helideck is any object that might present a hazard to the（）.
Seasickness is caused by rolling or rocking motions which affect fluids in the（）.
In heavy seas the helmsman should steer the motor lifeboat（）.
For a ship not on an international voyage，an approved substitute for an impulse projected rocket-type line throwing appliance is a（）.
Severe exposure to chlorine gas can be fatal. Chlorine gas is primarily a（）.
Oil fires are best extinguished by（）.