When we purchased Calypso the surveyor missed identified the source of a similar sounding leak. He stated it was condensation from the cold water of Lake Michigan; I was not convinced we argued the point but in the end I was going to buy the boat regardless of the issue.
Fast forward to the boat in Seattle and being launched after 4 weeks of work and projects. The bilge was very dry, the floorboards were up in the mast step area (we manufactured a new mast step). Within the first 10 minutes of being afloat in Lake Union lake water was clearly entering from just forward of the mast step. We immediately hauled the boat back out to find and repair the leak. Calypso was raced very hard from 1971 on (as Arieto, Phantom, and Esta Es). The stress of high loads on the rig, especially loading up the back stay to reduce forestay sag had created fractures (athwart ships) just forward of the iron keel base (the early 43's have an iron keel base with a lead shoe for a total of 9,000+ lbs). There was a well (indent?) about 12" deep shaped like the hull to keel junction that the factory filled with "bog". This particular bog was a low density, low strength polyester based filler, orange in color. The bog had many fractures and indicated long term water intrusion. The fractures may have been from physical stress or from the effects of fresh water freezing and expanding when hauled for the winter (Chicago area). The fix was around $5K and included inside and outside hull grinding, re-laminating, and replacing the bog with laminate/filler that adds to the strength of the structure. I hope the 29 MK II leak is a simpler fix. Martin Calypso 1971 C&C 43 hull #1 Seattle ________________________________ From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Afortunateson57 Sent: Thursday, September 13, 2012 7:42 AM To: cnc-list@cnc-list.com Subject: Stus-List 29 MK II Leak I have recently purchased a 29 MK II. There are no visible signs of hull damage below the waterline, yet I have a leak that is entering from a small sealed sump directly under the mast. It is entering the bilge from the drain holes in the stringers just forward of the main bilge sump. The leak has become more than a nuance as the volume of water entering the bilge has increased from a trickle to a steady flow over the sailing season. Any thoughts on what the cause may be or more importantly, the remedy.
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