Jack indeed. At my grad my old man caused kerfuffle when I put his name forward - Captain PN, MM
Having elicited that he was a master mariner, merchant marine, they were still at a loss as to his precedent. In the end he was hosted by a wg cdr. At the time, as master of a tramper, he reckoned that a 2.5 was more appropriate.
Today, given pay scales and responsibility, I would rate the master of a Cruise ship at gp capt or even 1*.
Mind you, on one cruise ship the Greek master had the rank of a Vice-Admiral, later promoted to Rear-Admiral (but then he was Greek)
