The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is DMU. This MIC (DMU) stands for the company name Davis Mrne Prod Co Inc which is currently Out of Business. This boat manufacturer code has other company names (DMU 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 (Davis Mrne Prod Co Inc) is owned by Harry L Davis and is located at 5701 Rainier Ave S in Seattle 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. Davis Mrne Prod Co Inc has started making boats, yachts and other watercraft as of 1/19/1977 and went out of business on (11/15/1988) in the following country: USA.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Oob Per Mso Sea 11/88.