Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangements when such arrangements have been proven reliable.

The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepower.

When forced lubrication is used for propulsion engines, one independently driven stand-by pump is to be provided in addition to the necessary pumps for normal operation.

Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors.