Submersible vessels for hire are subject to the same legal requirements as other vessels, with the exception of construction standards / classification. Crewing requirements are still set by tonnage (which is a measure of commercially relevant volume). Here in Canada, a certificate of competency as master up to a particular tonnage limit would work exactly the same way as for surface vessels, but a submersible endorsement is attained by also having an accredited commercial diving qualification of any type (restricted or unrestricted surface supply, or occupational SCUBA). USCG requirements vary a bit from the Canadian ones. My master certificate is good only up to 60 GRT. In the states I think you guys start at 100 if I'm not mistaken. In any case, any vessel operating in a commercial capacity must meet construction standards, must be fully in compliance with the International Regulations for the Prevention of Collisions at Sea, must be crewed according to regulations for its tonnage and power plant, and must pass any relevant Coast Guard / DOT inspections. I think you would have a tough time operating commercially without insurance for the purpose, which is likely dependent on an ABS / GL / DNV or what have you classification. The other route of course is to pull a Karl Stanley and change legal jurisdictions.<br><br>Sean<br><br><br>-------- Original Message --------<br>On Oct. 9, 2019, 20:03, Brian Hughes via Personal_Submersibles < personal_submersibles@psubs.org> wrote:<blockquote class="protonmail_quote"><br><html>
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Whilst recently enjoying a fine cigar and outstanding bourbon, five sub owners sat around a bonfire at Raystown Lake, Pennsylvania and contemplated US Coast Guard requirements for carrying passengers. Especially paying passengers. Does one need a Captain's
License to do so in a submarine?</div>
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The distinction arose around diving in lakes or diving in waters normally patrolled by the Coast Guard. Further, what does piloting a boat on the surface have in common with piloting a boat that purposefully sinks and comes back up?</div>
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Thoughts? Internationally friends, what is your experience?</div>
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Brian</div>
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