The Etaps were real popular here in Europe in the mid 80's. I had a lot of friends that had all kinds of ETAP... They all had a red stripe on the hull.
Altough its true they do not sink, a real life test was done to one here in the end of the 80's and was deliberatley sunk...
It does not sink but water inside gets to above your knees. The water level inside will raise to the seating part of the sofas.
The theory they had is that its safer to stay on the boat and take a beating than to abandon ship...however....for it to work, the sails must be down otherwise, it can capsize and stay......
They still sell and must admit they look better now than they ever did..
Here they are classics...you have a good boat...all the best with it