OK, all diesels are governed, if you can get 3600rpm without load, then with a droop setting of say 7% you should get 3300 Rpm, (check with manufacturer what it is, who knows it maybe 10%). By the way I would never rev the engine to design maximum revs without load. You may check the throttle to see if it has capacity for more stroke, in that case if you must, adjust. If on the other hand something has happened to increase the load, such as hull/prop fouling, increase draft
, or you are not motor
sailing the limitation would probably be either exhaust temperature or Coolant
temperature, you should not exceed any design limits imposed by the manufacturer, however just because the maximum revs is 3600rpm it doesn't imply that your engine should do it, many a good installation
is deliberately derated so that design power occurs lower in the rev range.
I would suggest that if your vessel is pushing thru the water
at good clip, do nothing.