Re: Replacing Chainplates on a Sabre 34
As others have guessed, that boat has major problems. The first picture is the port upper shroud chainplate, and it's really bad. The bolts at the bottom end have crushed the plywood -- very rotten. The chainplates themselves are probably in decent shape (but need inspection anyway). Josrulz replaced his for something like $400, so even if they are bad it's not an issue.
What has happened is that the chainplates have been allowed to leak. The water has run into the boat, and soaked the plywood knees, which have rotted. To get them out, you'll be removing cabinetry, and then the knee and glass, and then re-doing. If it's just this one, that may be an OK project (of course, to leak into the boat, it had to leak THROUGH the deck, so you may have deck core rot too -- a bad thing as well). But if it's more than one, you're going to have to pay big time for repairs.
If you go see the boat, each of the 6 chainplate knees are covered with a U-shaped teak cover strip along the edge. They are held on with very small nails. Grab ahold of the teak and pull -- it will come off in your hands. Then you can see the edge of the plywood, and assess the extent of damage. Note that my surveyor did not do this simple task (fortunately, I had and knew what I was getting), so just because a surveyor finds no rot doesn't mean you are all-clear. After you inspect, the covers push right back on.
'79 Sabre 34 MK1
Mill Creek, Annapolis