The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is QOS. This MIC (QOS) stands for the company name Ontario Specialty Unlimited which is currently In Business. This boat manufacturer code has other company names (QOS 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 (Ontario Specialty Unlimited) is owned by and is located at #6 Gallano Street in Port Lambton state of On. It manufactured this vessel and placed your HIN or CIN on the hull. The Parent Company for this boat maker is 576467 ONTARIO LTD () Ontario Specialty Unlimited has started making boats, yachts or other watercraft as of 5/17/1988.
More details at the US Coast Guard.