The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is GSA. This MIC (GSA) stands for the company name Gibbs Sports Amphibians Inc which is currently In Business. This boat manufacturer code has other company names (GSA sometimes goes by these name(s) if applicable: Island Creek Boat Serv (oob), , , 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 (Gibbs Sports Amphibians Inc) is owned by Neil Jenkins and is located at 2046 Brown Road in Auburn Hills state of Mi. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Gibbs Sports Amphibians Inc has started making boats, yachts and other watercraft as of 9/5/2012.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Island Creek Boat Serv Oob Per Mso Bal 911113.