[doorgunner69]

Ah, so. A submarine jet-ski water jet of sorts? A high and low speed option with prop or water jet only? Reverse does not work well for water jets as I recall.

[Spktyr]

Most likely it’s a ducted propeller type. However, they’re (correctly) keeping their adversaries guessing by hiding what it looks like - because among other things, you can then computer model it based on photos and figure out weaknesses.