You get a pretty solid first four pages if you Google
(including the quote marks)
at least, better than anything I could tell you, so I'll just mention a couple of things which those hits may not address ...
They're not as affordable as an electric
start, for sure; it's a question of economies of mass production. They do have the advantage of starting a diesel engine
even when the engineroom is chockfull of seawater, though.... (not much point unless you pick an engine without electronic engine management, naturally)
This attribute is especially useful if you have a disaster pump connected directly to the engine - as the Bounty replica, like all wooden planked ships, would have been particularly well advised to do.
Your most affordable option would be to retrofit a hand start facility along the lines of the 2GMY solution, but you'll need to pick an engine with separate decompressors for each cylinder if you're doing that.
The biggest hand-startable diesel
I've shared a boat with had a 6LXB Gardner swinging a 1 metre (39") diameter MaxProp.
It was a maxi racing
yacht with coffee grinder winches, with handles which four guys could crank. When the occasion demanded, they could take one set of handles down to the galley
, and after a bit of disassembly of the joinery (which was made with that in mind) they'd connect it up using a custom coupling, and get four seriously big guys kneeling around it.
They'd get her spinning with all cylinders decompressed. Then the first decompressor would be tripped shut, and the veins would stand out on their foreheads as they helped it through the first compression
Luckily it was a beautiful engine, immaculately maintained, and from there on it was largely downhill.