First full operational debut of Twin Submarine Engines

[Wheelerdealer]

Re: not quite the first.

Wow - I think this is a first on either side of the "pond"! Congratulations, Pedro. We are very interested in seeing it installed in your boats! I hope you will consider writing a SubCommittee Report article once they are on the water.

Not quite the first Tim. I saw a Darnell Type VIIC uboat in marine modeling in the 90's that had a working snort and diesel/electric drive.

I can beat that, in 1986 a certain Mr Blake describes in Marine Modelling,his working Xcraft powered by an OS20 glow engine, a Robbe 12 starter, and 12v motor via a electo magnetic clutch. Balast system was compressed air with an onboard air compresser. A good 3 page article with pictures and diagrams. Aparently its at the bottom of Black Park pond after it caught fire and sank