The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is WKO. This MIC (WKO) stands for the company name Watercraft, Inc which is currently Out of Business. This boat manufacturer code has other company names (WKO 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 (Watercraft, Inc) is owned by Lowell E. Richards and is located at 565 Ygnacio Valley Rd, #300 in Walnut Creek 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. Watercraft, Inc has started making boats, yachts or other watercraft as of 10/5/1989 and went out of business on (3/5/1991) 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 Cg-5093 Mso Sfc 910305.