John
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6/20/2020 10:23 AM
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The T37 centerboard pennant system is both unique to the T37 and, in my estimation, problematic. It is simple to operate from the helm ("pull this line"). But it is also a hole open to the ocean that is unreachable if breached.
But that doesn't answer your question. See the diagram on page 15-A of the operator's manual (below). The pivot pin is somewhere in the center of the upper portion of the CB, some distance back from the front of the keel. Finding it will not help your situation. The boat must be in the lift or on high blocks, high enough for the down board to clear the ground or in a trench dug under the board. The pennant is attached to an eye high up on the back of the board, threaded through an auto radiator hose long enough to go from the eye to just over the board shoulder and with a width that allows it to fit in the trunk with out binding, then up through a short radiator tube connecting the fiberglass tube in the keel to a stainless bent tube that terminates above the waterline when heeled, then out through a sheave in the mast to the deck rig. See various photos below.
I replaced the old (1978?) squishy short radiator tube in the bilge when I bought New Day in 2007. In 2018 it began to leak a little. By then the CB had become almost too hard to raise and often would not lower. Since I only cruise her I decided the small advantage going to windward was not worth the two problems of a stuck down board and potential catastrophic leak. I epoxyed over the hole in the bilge and held the board in the truck with a SS plate (in case a future owner wanted to get the board back).
Your yard guys will have to hang your boat high, push a metal fish line down from the mast sheave to the CB eye, fasten a new pennant to the eye (do it right - Bill Siefert in the manual advises a bowline), properly thread the pennant up through the hose with the fish, and back out to the deck.
Good luck,
John Harvey
New Day T37 #16 and still going strong (thanks Tim!)
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Marc Ladin
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6/20/2020 7:25 AM
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When my yard hauled my '82 T37 CB last year they broke the line for the connection for the center board. Now while trying to launch her they thought they could fix the CB easily - but they can't. They have now ground down the forward end of the keel on both sides hoping to find the pivot pin so they could pop out the pin to drop the CB. No pin. And they have no idea of how to reattach the line. Any ideas? Any and all help will be appreciated.
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