Tell your friend to hire a surveyor
ABYC does not publish standards for free. You can buy them, but unless you're a surveyor who'd need them on an ongoing basis, the cost to do so would not be justified. The entire set costs far more than the price of a survey.But there's an even better reason to hire a surveyor: not only are GOOD surveyors thoroughly grounded in, not only ABYC standards, but UL, NFPA, CG and other marine standards, but experienced ones are aware of known issues on makes/models/years of almost every boat, and therefore know where to poke and prod for things that aren't covered by any standards. In fact, I've yet to know of a survey by a truly competent and EXPERIENCED surveyor that didn't find enough that needed correction--at the seller's expense--to at least cover the cost the survey. It takes years of training and experience to become a competent surveyor. Even if you bought the complete set of standards, you couldn't possibly learn enough by just reading 'em to know what MUST be corrected and what prob'ly oughta be, but isn't critical. At best, you MIGHT learn just barely enough to be dangerous--and possibly discourage your friend from buying a boat he should have bought.