The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is SDK. This MIC (SDK) stands for the company name Swamp Dragon Boats Inc which is currently In Business. This boat manufacturer code has other company names (SDK sometimes goes by these name(s) if applicable: , , , or Sea Dancer Bt Inc (oob)). This could happen if the US Coast Guard reissued the MIC to a new company after the first went out of business.
This company (Swamp Dragon Boats Inc) is owned by Steven Bush and is located at 7472 Hawley Rd in Red Creek state of Ny. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Swamp Dragon Boats Inc has started making boats, yachts or other watercraft as of 4/8/2019.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Current Info As Of 890822 Sea Dancer Bt Inc (oob) 12/5/1977..