Milford Haven Coastguard says a man is being treated for smoke inhalation after his boat caught fire near Aberystwyth this morning
A spokesperson said the boat is believed to be from the area.
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Dry across the country this evening with broken cloud and some late sunshine. Scattered showers expected tomorrow.
40,000 people are expected at the motorbike event in the capital this weekend.
The comedian visited the area in 1964 after apparently upsetting people with one of his routines.