The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is WTH. This MIC (WTH) stands for the company name David Witham Boats which is currently Out of Business. This boat manufacturer code has other company names (WTH sometimes goes by these name(s) if applicable: Witham Peter Boats, Pete Witham Boats, , or ). This could happen if the US Coast Guard reissued the MIC to a new company after the first went out of business.
This company (David Witham Boats) is owned by Witham, Peter and is located at Rte 152 Box 5 in Nottingham state of Nh. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. David Witham Boats has started making boats, yachts and other watercraft as of 7/11/1975 and went out of business on (12/13/1985) in the following country: USA.
More details at the US Coast Guard.