<div style="font-family: Arial, sans-serif; font-size: 14px;">Les, I can happily run some test cases this weekend to figure the hull material weight of your proposed sphere, but if your concern is the ultimate handling / trailering weight, as a functional submersible that is going to be exactly the weight of an equivalent sphere of seawater, at ~ 1,025 kg/m^3. For your 2m sphere, that will be 4,293.5 kg or 9,465.5 lbs.</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">Sean</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div>
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On Wednesday, October 22nd, 2025 at 19:00, via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br>
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<div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt"> </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">After many years and many hospital holidays, </span><span style="font-family:"Segoe UI Emoji",sans-serif;color:black;mso-ligatures:none">🙂</span><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none"> I am no longer a financial member.</span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">However, I am hoping that someone may assist me in the spirit of Psubs.</span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">If memory serves, there was a calc formula on your site of which I no longer have access .</span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">Any way, I have a project idea that to continue with, relies on the minimum weight achievable for the following ;</span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none"> </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">A 2 meter diameter sphere with appropriate bracing material and with safety margins </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">To dive to sea-water safe depth of 150meter (160psi) No doors No windows </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">Windows and doors will add much I know, however, are details to be considered later only if the basic weight indication makes the project viable.</span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">So basically, I need to know the framing and sheeting steel sizes and thicknesses to <b>calculate the overall weight</b> in this basic form. If positive at such point I will apply for re- membership to follow through with my idea.</span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">I know this sounds vague and I am asking much, but could someone assist me in this very basic task, which I know not how to do. </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">Thanking any member who might be inclined to assist me. </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">Cheers Les </span></p><p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none">Safe diving </span><span style="font-family:"Segoe UI Emoji",sans-serif;color:black;mso-ligatures:none">🙂</span><span style="font-family:"Aptos",sans-serif;color:black;mso-ligatures:none"></span></p><p class="MsoNormal"><span style="font-size:11.0pt"> </span></p></div>
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