I have no idea of how many, but I know there are at least one. I met the couple last fall in the ditch headed south. Younger couple as usual, as I notice that the boat lengths start increasing with the owners age, it seems. Seems to be a fine boat for island cruising, good draft, stable, not a clunker like some I see wandering south. Sorry that doesn't answer your specific question, but you should be in fine company with the E27. I might wander down there in the spring of the year on my 29', I've about had enough of working on boats for "insert expletive deleted here". For the exception of the little standing area in the forepeak, (or the forward stateroom as my bud likes to call it), I see little difference in the boats. Durn sure no reason why I would NOT do it on a 27. It's just a matter of accommodations, and maybe tankage.