[PSUBS-MAILIST] K-600 has been blasted

[Rick Patton via Personal_Submersibles]

Isn't there a narrow piece that the lifting eye is connected to? Still
confused why the hull would be more than one piece? I didn't think about
Alec's comment about the inside. I hope I never have to do an inside
blast!😬

Rick

On Sun, Apr 2, 2023 at 12:05 PM Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Well Rick, that's a long story.  The K-600 is just a beefed up K-350 and
> originally intended to hold one person.  Take out that 2-foot midsection
> you see in the photo and you can imagine how it originally came out of the
> factory.  While using the K350 plans was convenient, Kittredge neglected to
> consider the weight of the thicker hull, tank heads, and ribs of the deeper
> diving K-600.  When he put it in water the first time it was negatively
> buoyant and slowly settled on the bottom.  I believe he used thrusters to
> get him back to the surface, but just barely so.  I remember him telling me
> that if he had weighed 5 pounds more he wouldn't have made it back to the
> surface.  He brought it to Bath Iron Works (nice to have connections from
> his Navy days) and had them cut off the back tank head and add two feet of
> hull to increase the buoyancy.  So that's why there's a noticeable
> mid-section "scar" on the K-600.  :) :)
>
> Jon
>
>
> On Sunday, April 2, 2023 at 01:47:55 PM EDT, Rick Patton via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> I didn't realize that the pressure hull was made up of three pieces of
> rolled plate. Wonder why the aft most piece is so short? Don't think all
> that heat put into the hull would be a good thing,
> I had my sub sand blasted in pieces before they were all welded together
> which made it alot easier. I think the reason I did that was that the hull
> had been fully welded and then sat for quite a long time while life was
> happening and the steel might have been hazing due to it being located at
> my shop which was a block from the salt water. I made an enclosed place to
> blast it knowing that it would be messy out of 2"X4",s and visqueen but it
> failed about half way through from the air blasting out of the nozzle..
> A ton and a half is a lot of sand! Good job Jon.
>
> Rick
>
>
>
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20230402/6c1662f0/attachment-0001.html>