On Thu, 03 Aug 2006 14:17:53 +0200, Edgar wrote:

If you go aground in a twin keeler you will have a job getting off
unless you can wait for incoming tide. You cannot heel them to reduce
draft.

No, but you can un-heel them to reduce draft. If you are sailing heeled
and run aground, the single keel will want to dig deeper. With the twin
keel, on the other hand, draft is lessened as the boat rights itself,
perhaps, by enough to free itself.