Quote:
Originally Posted by Sniper297
"Typically there were 4 Diesel Generators on the boat (2 for the P Class)."
Can't believe everything you read on the internet, the Porpoise class had 4 main diesels, not 2. At some point they had a single long engine room for all four main diesels, later went to the forward and after engine room design, with a small auxiliary below the floorplates for topping off charges. One of the HOR equipped boats had all four main engines fail (drive gears were the main problem on the HORs) and limped home at 3 knots using only the auxiliary diesel to power the electric motors.
First batch of SARGO boats had a hybrid drive, forward 2 diesels standard generators, aft two direct drive. That proved to be so clumsy it actually reduced top speed while making maintenance a nightmare, so the last batch of SARGO class and every class after that were straight diesel-electric.
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Correct, got the facts mixed up in my head. P class was when they went to the 4 engine lineup. Cachalot was a 2 engine design. There was a lot of experimenting going on with propulsion in those days.