<p dir="ltr">Hi Brian, take a look at James Camron's sub. He used lead shot. I remember seeing a video on some of the design challenges on how the hopper opened. Might be worth a look.<br>
David Colombo</p>
<div class="gmail_quote">On Sep 16, 2016 5:49 AM, "Jens Laland via Personal_Submersibles" <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Gentlemen,<br>
<br>
If I'm not wrong, I think the French used a whole lot of off-the-shelf<br>
lead balls (as used in shotguns) in two individual pellet ballast<br>
hoppers when they operated the "Trieste" back in the 50's, ref<br>
<a href="https://upload.wikimedia.org/wikipedia/commons/3/31/Trieste_nh96807.svg" rel="noreferrer" target="_blank">https://upload.wikimedia.org/<wbr>wikipedia/commons/3/31/<wbr>Trieste_nh96807.svg</a><br>
<br>
Best regards,<br>
Jens Laland<br>
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