The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is GBV. This MIC (GBV) stands for the company name Growler Boatworks which is currently In Business. This boat manufacturer code has other company names (GBV sometimes goes by these name(s) if applicable: , , , or Gerard Boat Co - 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 (Growler Boatworks) is owned by Gene Kester and is located at Po Box 4068 in Bellingham state of Wa. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Growler Boatworks has started making boats, yachts or other watercraft as of 11/17/2010.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Pmr 08/29/85oob 5/88 Re Rbsu(w). Gerard Boat Co (santa Barbara Ca) Ib -3/16/1978 Oob - 5/17/1988.