The cabin cruiser, Vino Calypso, owned by Steve Blake, has been poised 10ft above water since floods receded in Bredon, Worcestershire, more than a fortnight ago.
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Dorothy Denny, who owns the marina there with her husband, said it was a "miracle" the £20,000 vessel was completely undamaged after becoming lodged on mooring posts.
Mrs Denny, 49, said: "The boat is completely undamaged - you could not have put it there if you tried."
Mrs Denny, and partner Richard, a motivational guru, have had to be patient, waiting for the soil to harden before the stranded cruiser could be moved by crane.