Not surprised at all. This eventual situation has been posted to the Tayana Owners Group many times in the past. That bobstay and its water line connection simply holds up the entire rig.

Several problems with this design ... 2 material issues and one 'engineering'.

The forestay (not the headstay) is only pinned to the bowsprit, so if you lose the bobstay , the sprit lifts and also take the forestay (staysail) with it. The HCs have a 'gammon iron' connection for the forestay, a gammon is essentially a 'stirrup' through which the sprit passes. The gammon is connected to the hull, not the sprit. The sprit is only throughbolted to the decking .... huh?

You really have to open and inspect that waterline bobstay connection every few years to search for crevice corrosion ... I 'think' Tayana used 302 stainless for the OEM bolting. The design was pre-1975 when we then only learned about the 'crevice corrosion' was a major problem with 300 series stainless.

The 'worst' situation is that Tayana used "Grand Deer" rigging fittings on the bobstay as well as most of the OEM rigging. The GD rigging T-bolts are a 'screwed together' affair which are EXTREMELY vulnerable to crevice corrosion, all the T-bolts on Ty37s should be replaced with normal 'forged' T-bolts. This is what the GD OEM t-bolts look like on early Tayana boats http://i1086.photobucket.com/albums/j449/svAquila/DANGEROUST-Bolts.gif