The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is SGL. This MIC (SGL) stands for the company name Stigler Bt Trlr Mfg Co which is currently Out of Business. This boat manufacturer code has other company names (SGL sometimes goes by these name(s) if applicable: , , , 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 (Stigler Bt Trlr Mfg Co) is owned by and is located at Po Box 548 in Stigler state of Ok. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Stigler Bt Trlr Mfg Co has started making boats, yachts or other watercraft as of and went out of business on (5/7/1976) in the following country: USA.
More details at the US Coast Guard.