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    <p>If it's the guy I'm thinking of, the sub was made of reinforced
      concrete, not ferrocement. <br>
    </p>
    <p>Marc<br>
    </p>
    <div class="moz-cite-prefix">On 6/25/2023 11:07 PM, Alec Smyth via
      Personal_Submersibles wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CABECYQ4PGSJj-M1ASi=4msM1VFH72Ljwuy35t3SuKMC6A_1RfA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">There's an interesting story about cement subs,
        which I will tell to the best of my recollection. In the early
        years we had a PSUBS member whose name I forget, I believe Swiss
        or Austrian, who had built a ferrocement sub that he kept at a
        mooring in a Swiss lake. The sub was successful, he dived it for
        years. But eventually he moved to Colombia due to marriage, and
        scuttled the sub in the lake, because the road he had used to
        take it there had been re-routed or modified somehow, leaving
        him without any way of getting it out. The sub became an
        attraction for local SCUBA divers. 
        <div><br>
        </div>
        <div>The second part of the story is that another PSUBS member,
          Ian Roxborough, hired the first guy to build him a large
          cement sub with the intention of making it an ocean going
          live-aboard. The project was done completely on the level,
          with notification to authorities and in a major port. This was
          no drug sub built in the jungle. It got to the point where the
          hull was complete, and I think they were about for the first
          launch. However, Colombia being plagued by drug subs, the
          authorities would not sign off on final paperwork or something
          (can't remember the exact glitch.) Ian had sunk a ton of funds
          into it, and the sub was probably perfectly good, but approval
          never came. I'm not sure what happened to the sub. But Ian is
          still very much active, so maybe can tell us. I'm not sure if
          he's on the email list. If you are, Ian, sorry for bringing up
          this rather painful memory!</div>
        <div><br>
        </div>
        <div>Best,</div>
        <div>Alec</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Sun, Jun 25, 2023 at
          8:35 AM Marc de Piolenc via Personal_Submersibles <<a
            href="mailto:personal_submersibles@psubs.org"
            moz-do-not-send="true" class="moz-txt-link-freetext">personal_submersibles@psubs.org</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div>
            <p>That's it. I lost interest when I realized he had built a
              superstructure on a conventional pressure hull.</p>
            <p>Very sorry  to hear about Brian Cox.</p>
            <p>Marc<br>
            </p>
            <div>On 6/25/2023 6:11 PM, Jon Wallace via
              Personal_Submersibles wrote:<br>
            </div>
            <blockquote type="cite">
              <div style="font-family:"times new
                roman","new
                york",times,serif;font-size:16px">
                <div dir="ltr">Marc, that was probably Brian Cox who
                  passed away a year or so ago.  His pressure hull was
                  steel but he did use ferrocement for the
                  superstructure.  <a
href="http://www.subdb.info/cgi/database/showvessel/index.cgi?ID=1272980224&VN=Esmae&VT=1"
                    rel="nofollow" target="_blank"
                    moz-do-not-send="true">http://www.subdb.info/cgi/database/showvessel/index.cgi?ID=1272980224&VN=Esmae&VT=1</a></div>
                <div dir="ltr"><br>
                </div>
                <div dir="ltr">There are no standards for using
                  ferrocement as a manned submarine pressure hull and I
                  think anyone attempting it would find little support
                  for the project given the Ocean Gate loss.</div>
                <div dir="ltr"><br>
                </div>
                <div dir="ltr">Jon</div>
                <div dir="ltr"><br>
                </div>
                <div><br>
                </div>
              </div>
              <div
                id="m_4380271176043459050ydpc0df22c3yahoo_quoted_7854919351">
                <div style="font-family:"Helvetica
Neue",Helvetica,Arial,sans-serif;font-size:13px;color:rgb(38,40,42)">
                  <div> On Sunday, June 25, 2023 at 04:09:00 AM EDT,
                    Marc de Piolenc via Personal_Submersibles <a
                      href="mailto:personal_submersibles@psubs.org"
                      target="_blank" moz-do-not-send="true"><personal_submersibles@psubs.org></a>
                    wrote: </div>
                  <div><br>
                  </div>
                  <div><br>
                  </div>
                  <div>
                    <div dir="ltr">I know. I fell in love with FC for
                      yachts, which made me wonder how <br clear="none">
                      useful it would be for pressure hulls... Turns out
                      there is a 2010 <br clear="none">
                      exchange of messages in my archive with somebody
                      on this list who built <br clear="none">
                      in FC, Brian Cox. Is he still there?<br
                        clear="none">
                      <br clear="none">
                      Marc<br clear="none">
                      <br clear="none">
                      On 6/24/2023 8:27 PM, Bernie Hellstrom via
                      Personal_Submersibles wrote:<br clear="none">
                      > Many boat hulls were made with FC. Even the
                      landing barges in the ww2 , to make piers to in
                      load ships!<br clear="none">
                      ><br clear="none">
                      > Sent from my iPhone<br clear="none">
                      ><br clear="none">
                      <div
                        id="m_4380271176043459050ydpc0df22c3yqtfd88497"><br
                          clear="none">
                      </div>
                    </div>
                  </div>
                </div>
              </div>
              <br>
              <fieldset></fieldset>
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