This photo was taken in Sweden, late december last year.
Below freezing and double trapeze. After two hours you where really cold!!

We where sailing in sheltered waters and we where both experienced sailors.

The biggest problem was to keep the hands warm. Holding the mainsheet in the hand is enough to stop the circulation and you need to stop once in a while and "shake" down warm blood in you hands.

We used breathable drysuits with rubber feet.

/hakan