RE: [PSUBS-MAILIST] Fw: Herves sub

Correct me if im wrong… but an ambient pressure sub is supposed to have some kind of an air pocket… and since the diver is under the pressure of the water above it… and that air pocket will also contain air under pressure…. Hence the term ambient (at the same pressure of its surrounds)

Outwards opening hatch’s of that size on the sub below, and the scuba tank visible… I dare say that sub is a scuba only sub… ie the passenger compartment/hull is at exactly the same pressure as outside with no air pockets…

If that were the case…. I would think the outboard may have pressure compensation as far as keeping it dry while diving on the trolling motors that are visible at the back… but I highly doubt the outboard would be able to run at that depth… the pressure compensation would have to be very very accurate with changes in depth….

Did you know, not tilting your outboard motor up while being towed by another boat can cause water to be forced up the exhaust up the leg of an outboard into the block/cylinders through the exhaust ports? Anything deeper than 40ft without an accurate enough pressure compensation mechanism would probably cause the same thing to happen!

Stew

From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of JimToddPsub@aol.com
Sent: Wednesday, 2 March 2011 11:32 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Fw: Herves sub

Another shot of the same craft.

In a message dated 3/1/2011 5:44:28 P.M. Central Standard Time, alanjames@xtra.co.nz writes:

Hi Alec,
I'll try & get some info off Herve on how he did it.
http://www.submarineboat.com/images/submarine/intruder_1.JPG
Alan
----- Original Message -----
From: Smyth, Alec
To: personal_submersibles@psubs.org
Sent: Wednesday, March 02, 2011 12:25 PM
Subject: RE: [PSUBS-MAILIST] Fw: Herves sub

Hi Mike,

No, that isn't the model with the outboard. That one's a conventional battery powered ambient. I happened to see that one or one exactly like it on a visit to his Florida facility years ago. Seemed a perfectly good boat, although I didn't get an opportunity to dive it. I've seen video of that one diving.

Thanks,

Alec

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From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Mike Caudle
Sent: Tuesday, March 01, 2011 6:20 PM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] Fw: Herves sub
Alex this is one of Herve's three man for sale here in Canada they are asking 90k. I see the trolling motors on the side, not sure if it has outboard. I will try to get more info.

Mike