Old bedford diesel ob-5

I am looking for any information and or manuals for my Bedford diesel engine a straight 6 cyl that is rather huge beast. The GM engine tag says "Model BO5, Serial number 3417 / P.I. 1299, then the following numbers E104, E108, E109, E 272, SL.1141, GENERAL MOTORS, WILLINGTONBOROUGH ENGLAND" ?

She is different than the other Bedford models I have found so far. All I know about age is, I was told the US Navy confiscated the boat
in 1941 in San Francisco and used it for a launch. She had a gas engine. When the boat was returned in 1947 to the owner the Navy had installed this Bedford diesel in it. I assume its from the 1940s. My boat is a 34' cabin cruiser built in San Francisco in 1931 by Dee Martini. She runs great till last weekend I had a water pump go out. Its a big beast and slow mover 9 to 10 knots tops. Full throttle 1800 rpm I cruise at 1650 at 7 knots. I have a new full engine rebuild kit that came with the boat sale. It doesn't have a water pump however.

This is a tuff one I cant find anything on this old girl except a post on this site in 2003. I emailed the fellow I am sure he probably changed his mail by now.

Thanks

I believe https://www.harbormastermarine.com/ has some parts, but probably newer models.
https://www.surplusman.com/ buys and sells used engines and parts.
ebay is a good place to look for parts for obsolete engines.
https://www.ebay.co.uk/ is a good place to look for things manufactured in the UK.
http://www.waterpumpman.com rebuilds most pumps.
http://www.depcopump.com rebuilds almost any pump ever made.
Water pumps are not hard to rebuild. Most bearings and seals are a common size. Might be a rebuilder is near you.

Wow thanks a million Lepke! I will check them all out!

this may help:
http://www.numeralkod.com/cross/arc...rial and marine diesel engines ops manual.pdf

but it has B5 and OB5 (vs BO5)...

Wow you found one makomark! I cant believe it, I searched ever possible combination of words.
Thanks! mind if I ask where you found it? Numeralkod arcives? I pulled my water pump last weekend.
It is a ITT Jabsco, the impeller ripped apart. Looking for a local pump rebuilder now.
Thanks again!