Really going off on a tangent now, but I recall a Waterway's World (?) article umpty years ago.
It was about a wooden motor on maintenance on The Severn.
A particularly strong bore was predicted and it was decided expedient to get her back onto the cut for safety. Unfortunately her engine was non serviceable.
So they plonked a girt great diesel powered water pump in the hold and trailed a pair of hoses back to the counter.
Water jet powered, she blasted her way up The Severn to safety.
I have a recollection she was the Harland & Wolff Star Class prototype Venus, however I may well be wrong. I have now reached that point in my life where I ask total strangers if I've had my dinner yet.