"Marine two-stroke diesel
engines directly coupled to the propeller
are able to start and run in either direction as required. The fuel
injection and valve timing is mechanically readjusted by using a different set of cams on the camshaft. Thus the engine can be run in reverse to move the vessel backwards."
I worked on a Canadian Lighthouse tender
that had a Fairbanks Morse DD. It was held by a private owner who bought it. I had to explain to him the procedures for docking
the boat...I was assisted by my Best Friend who is a Master...I don't recall
all the endorsements he had.
Air Start: Oh boy!!!!!!!! You had two opportunities to restart befor the Aircompressor would recharge the tanks
. So there was none of that "Back and Forward, Forward and Back, Ahead Astern Throttle Jockeying
That you see "Yachtsmen doing as they scream away".
All in all it was a stout...fun boat.