I have done exactly that.  I have a Northern Lights 20k genset 

Lorenzo asked: Has anyone rigged up a 20K genset to supply get home power? I've got a 63ft shrimpboat with a 200hp 8/71. I have done exactly that. I have a Northern Lights 20k genset equipped with a hydraulic PTO. The PTO drives a Keypower "get home" system. As Bill stated, who is using a Wesmar, Keypower used to cut the shaft. They now have a unit that leaves the shaft in tact. When called upon I start the genset, turn on the PTO and remotely engage the get home. It is pushing a Selene 53' loaded to the gills at 100,000 + pounds to a max speed of 4.5 kts. We generally will exercise the unit at about 4 kts. It has it's own hydraulic cooling loop to keep things cool. Depending on your weight I would expect similar performance. The calculations aren't too hard to interpolate the anticipated speed to HP relationship. Remember that KW is at a ratio of .746 to the HP input. I have seen the Wesmar unit as well as the Vetus version and a couple of one off's. I saw Townsend Bay marine, where Bill's Wesmar was installed, fabricate a unit using a Harley Davidson belt drive system to push a Diesel Duck. Les Dobbe "Voyager" Selene 5334 Brunswick, GA