Fuel injectors are a piece of piss you should try a sulzer fuel pump with variable injection timing they are nasty.

But another thing is that ships are starting get very very high tech One ship i was recently on had as a control system a rather large and complex Unix based computer network so everything was controled via a compouter screen and a mouse.

Then there is the new engines from sulzer which are a slow speed two stroke and they have no camshaft so both valve opening and fuel injection is done entirely electronically