Anybody ever heard of high perf marine trannys available that have a final ratio of somewhere close to 0.5:1

Im starting a new project with some unique power proposed, any ideas would be great , ive looked at ZF ...

Get intouch with shifter on here.He can tell you all about boat trannys from 2 speed to six speed.

thanks for the reference i would love to talk with him , any ideas how i can get in touch with shifter??