Regarding various scenarios when different elements of the fuel oil/lubricating oil/cooling water systems are out of order (based on German manuals):
Lubricating oil:
normal operation: attached lubricating oil pump forces oil through the lubricating oil distribution box, lubricating oil cooler to the engine.
attached lubricating oil pump out of order: connect together lubricating oil systems of both engines at the distribution box. Connect together both lubricating oil collection tanks.
both attached lubricating oil pumps out of order: force the lubricating oil (by means of the auxiliary lubricating oil pump) from both lubricating oil collection tanks through the distribution box to the engines.
lubricating oil cooler out of order: bypass damaged cooler, both attached lubricating oil pumps force the oil through the working cooler
Cooling water:
normal operation: attached cooling water pumps force the outboard sea water through the distribution box, lubricating oil coolers, engines, blowers to the exhaust manifolds.
attached cooling water out of order: both engines are cooled by one attached cooling water pump.
cooling by auxiliary cool water pump: when both attached cooling water pumps out of order.
cooling down by hand pump: when the engines are shut down after running under high load (i.e. during alarm diving), it is necessary to cool them down by means of the hand pump
circulating the water by hand pump: used to circulate the water with anti-corrosion agent through the cooling water system (outboard sea water intake and outlet have to be shut).
Fuel oil:
taking the fuel oil by means of the external (depot fuel oil) pump: through the fuel oil hose, fuel oil meter and fuel oil transfer system to the fuel oil tanks.
taking the fuel oil by means of the auxiliary lubricating oil: the auxiliary lubricating oil pump can be used as fuel oil transfer pump, pumping the fuel through the fuel oil meter to the fuel tanks.
giving the fuel oil by means of the auxiliary lubricating oil: outboard, from the fuel oil tanks, through the fuel oil meter.
filling the fuel oil tank from the fuel oil tanks: by means of the pressurized cooling water
transferring the fuel oil from main ballast and fuel oil tank to the internal fuel oil tank by means of the auxiliary lubricating oil pump:
transferring the fuel oil from the internal fuel oil tank to main ballast and fuel oil tank by means of the auxiliary lubricating oil pump:
draining the internal fuel oil tank by means of the trimming pump: the trimming pump can be used to drain the internal fuel oil tank by means of the auxiliary hose connection between the fuel oil compensating system and the pump.
draining the internal fuel oil tank by means of the cooling water hand pump: by means of the auxiliary hose connection between the pump and compensating system
draining the internal fuel oil tank by means of the auxiliary cooling water pump: by means of the auxiliary hose connection between the pump and compensating system
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Regards
Maciek