Originally Posted by KeelHaulin
These regulations apply to production ships and boats; not one-off craft. I seriously doubt the USCG is going to question the structural design of the AC72 fleet, which are probably the most technically advanced sailing craft on the planet (aside from Hydroptere and other foiling cats).
If the USCG does a safety check they are looking for lifejackets, flares, and other basic safety and structural flaws. A guy built an all Aluminum trimaran to sail offshore (Circumnav?) a few years ago; the CG stopped him at SF Gate and did a safety check; then let him go. The boat was not built anywhere near the standards for offshore sailing cats. It only made it as far as Santa Cruz before it had major problems IIRC.
Point is the CG does have the authority.