An empty boat running in Marion waters launched a search across Buzzards Bay for a missing boater over the weekend.

The man, 54-year-old Scott Allen Graichen of New Hampshire, was found dead in the Cape Cod Canal on Sunday morning after an intensive search from Westport to Falmouth.

Harbormaster Issac Perry said TowBoatUS found the boat on Saturday afternoon between Bird Island and Stony Point Dyke.

A notice went out to harbormasters across Buzzards Bay around 4 p.m. with Marion sending out two boats to search for the missing man.

Other “Samaritan” boats, including the Beverly Yacht Club race committee boat, also contributed to the search. Perry said as many as 20 boats were on the water, including the Coast Guard and harbormasters from Fairhaven to Bourne.