Angle of vanishing stability

[Barbican]

When we visited Northshore to look at Sountherlies some years ago, we were asked if any long passages such as Biscay were planned. When we replied in the affirmative, the advice was that they were not suitable and we would be better looking at Vancouvers. Whether they made more profit on those I don't know.

Hahaha - When we visited Southerly the sales guy told us that many sales were made to people who originally enquired about a Vancouver! As ex Vancouver owners I had asked if they would be prepared to build a new one. Which they were.

I can't speak about the Carter designed boats but I wouldn't be concerned about the strength or sailing abilities of the Rob Humphreys, Stephen Jones or Ed Dubois designs any more than I would our old Vancouver albeit she was smaller and needed a bit of a breeze to get going I would go anywhere in any of them. Still love the Vancouver though!

 

[Tranona]

Please don't forget Portugal. Its harbours regularly claim yachting victims. The toll is perhaps partly a result of the sense of relief, and easing of vigilance, at having left Biscay behind. It can be a nasty place even without wind if the swell is high.

The clip I was responding to was in Portugal and covered by my observation about lee harbours and long fetches.

 

[dunedin]

So, this was a question that was asked alot about the keel slamming through the boat.
we had a model in the sales office to show what would happen.
no boat even goes from upright to 180 in 0 time it takes a while(normally after a knockdown) the keel would gradually go into the hull.

also we calcs to prove that the keel couldnt break through the keel box,

it is about 30mm thick in that area some times more as there alot of overlaps which all tie down through the hull.

also when we designed the later boats (57-47-535-49) all were designed as go anywhere boats. with heavy laid grp structures with single skin below the waterline ( about 20mm thk)
quite close frame spacing etc,

I can't see how a heavy keel plate would retract gradually as the boat turns over. Whilst there is side load due to weight, the friction is likely to prevent retraction. If it were to invert, surely the side force would suddenly reduce near to 180, and if it did decide to come down would then happen very suddenly as the side friction disappears.
The sudden impact on the stops would make a big bang on any structure.