Seaview Powerplant

[He Who Shall Not Be Named]

If I get it right, the snort is only a surface, periscope trim, device.

In the video you have a still slightly positive trim with ballast and have a very slight need for forward momentum to dive. Hence the slight dynamic dive. The ballast system plus the way the model is set for boyance, is the key to static dive, with a slightly negitive trim, pre ballast, correct?

I love your system and now I am more then hungry to make it EXACTLY like you have it...sorry for being so inquisitve with needless lack of confidence. If you can do it, I can do it....

The upper nicelle openings would limit bow pitch with reverse thurst, correct?

That's right, the induction tube of the LPB, AKA 'Snort' system, has to be above the surface to suck air that is compressed and shot into the ballast tank. The boat can be trimmed heavy or light in submerged trim, just as long as you can either plane up to broach the induction tube or can blow out a bit of water with a shot of gas to get the boat up high enough to broach the tube.

Be 'inquisitive'. Keeps me on my feet. When you become a pain, I'll box your ears a bit.

The open limber holes in the superstructure contribute intake water when going ahead. And, yes, when going astern, some of the backing water finds its way out the limber holes which because of their orientation produce a net zero longitudinal and lateral thrust. Just a tad of a downward thrust component from the limber holes when backing -- but not enough to matter a Tinker's damn.

David,