The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is SDF. This MIC (SDF) stands for the company name Smuggler Duck Boats which is currently Out of Business. This boat manufacturer code has other company names (SDF sometimes goes by these name(s) if applicable: Seamans Choice Oob 1/81, , , 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 (Smuggler Duck Boats) is owned by Brian W. Hartman and is located at Rd #4 4551 in Mohnton state of Pa. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Smuggler Duck Boats has started making boats, yachts or other watercraft as of 8/5/1994 and went out of business on (12/12/2002) in the following country: USA.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Mic Previously Assigned To Seamans Choice Plastec Oob 1/81. 05/29/03 Oob Per Rni.