Well, you did say "Any other advice..."
Hi. I just bought a 1971 Ericson 27. I'm new to big boat sailing and was wondering how many people I could safely take on my boat. Any other advice is also appreciated. (I've sailed and windsurfed my whole life on smaller vessels)
I used to crew on an E-27, back in the day. Must have been about 4 or 5 of us aboard.
Cockpit could get crowded but one could stay on foredeck or cabintop and one might perch in companionway....
The safety issue, IMHO, is not in any finite number of crew, but more in the skipper's ability to "supervise" a bunch of people, especially if some are new to boating and know little or nothing about how to comport themselves aboard.
With strangers and friends (put your relatives in whichever category fits...) your job as skipper is informing them about PFD's, head operations, fire extinguisher locations, thru hulls, and where and when they can move around topside. And then, what they can do to be part of the sail-handling crew. It's both basic and yet sometimes a bit complex, especially for those with no sailing background.
Smaller open boats have USCG capacity plates in them to guide clueless owners about how many pounds of people can be carried in normal sea conditions, and most fly bridge power cruisers have posted limits on weight on their fly bridge or other similar "second story" for stability reasons.
With that mass of lead keel under you, and the limits of room in the cockpit on on deck to park your friends and inlaws, you should never have any such problems....
Enjoy that Ericson! The E-27 has become a modern classic because it has speed, handling, and a generous cruising interior, something that a lot of its contemporaries lacked in the 70's. (And a resume that is very hard to find on any boat that size in the current crop.)
Cheers,
Loren