Chain Plates Stan Huntingford Design

[SailingMisty]

Boat projects continue. We are currently in Duluth, MN fitting out Misty for transition to live aboard full time blue water cruising. Among the projects is locating a few deck leaks, re-bedding fittings and checking the chain plates. Do any of you have original drawings or pictures of how the chain plates were attached to the hull? Misty is a True North 34 designed by Stan Huntingford and built in Taiwan in 1978. What I can see, short of destructive exploration, is what appears to be a flat plate about 8X5 inches embedded in fiberglass in the deck. I'm a bit surprised by this and expected the chain plates to extend down the side of the hull. Any insight into this will be very appreciated. Thanks!

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