The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is DDH. This MIC (DDH) stands for the company name Dean Hildebrand Co which is currently Out of Business. This boat manufacturer code has other company names (DDH 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 (Dean Hildebrand Co) is owned by D Hildebrand and is located at Pob 7245 in Sacramento state of Ca. It manufactured this vessel and placed your HIN or CIN on the hull. This Boat maker is not owned by a parent company. Dean Hildebrand Co has started making boats, yachts and other watercraft as of 2/23/1983 and went out of business on (12/9/1986) in the following country: USA.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Mfg: Pontoon Paddle Boats; Pedal Poweraddress Change 3/15/83oob 120986.