The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is ROK. This MIC (ROK) stands for the company name Rockport Marine which is currently In Business. This boat manufacturer code has other company names (ROK 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 (Rockport Marine) is owned by Sam Temple and is located at P. O. Box 203 in Rockport state of Me. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Rockport Marine has started making boats, yachts or other watercraft as of 11/21/1984.
More details at the US Coast Guard.