The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is LTB. This MIC (LTB) stands for the company name Ultra Marine Corp which is currently Out of Business. This boat manufacturer code has other company names (LTB sometimes goes by these name(s) if applicable: Ultra Boats Inc, , , 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 (Ultra Marine Corp) is owned by and is located at 481 Ne 79th St in Miami state of Fl. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Ultra Marine Corp has started making boats, yachts or other watercraft as of and went out of business on (3/16/1978) in the following country: USA.
More details at the US Coast Guard.