<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Marc, I do agree completely that if you want to get in a barrel and go over Niagara Falls, you should be allowed. This is different because the paying passengers were Likely not told about the concerns and warnings from industry experts. That is where my beef with experts lies, they could have done more to insure the passengers knew. A strongly worded letter to the builder is a let down. <div>Hank <br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Jun 23, 2023, at 7:47 PM, Marc de Piolenc via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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<p>Not so - a spar is loaded in bending, which means tension on one
side, compression on the other. In all structures, it is the
compression loads that are critical.</p>
<p>Marc<br>
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<div class="moz-cite-prefix">On 6/24/2023 9:19 AM, Alan James via
Personal_Submersibles wrote:<br>
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Marc,
<div>a wing spa would be mainly under tension, which carbon fibre
deals with well, & I doubt they would be a solid 5" thick as
this hull section was.</div>
<div>Alan<br>
<br>
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<div>On Sat, 24 Jun 2023 at 12:11 pm, Marc de Piolenc via
Personal_Submersibles</div>
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