Well hell, while everybody is BSing:
This is a C32 powering the forward genset on a rig supply boat that I rebuilt earlier this year. It's basically two C15's:
Setting the valves and injectors. Aftercooler, intake piping, and day tank still disconnected.
This engine has about 20k hours on it. Probably could have gone half that again before absolutely needing an overhaul, but these guys don't like failures.
Here's main propulsion. Two C280's at about 5,000shp each. High idle is 990rpm. Chief engineer said that they burn around 8000 gallons of fuel a day at full load. Ship's capacity is around 300k gallons. I don't want to pay their fuel bills.