The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is TST. This MIC (TST) stands for the company name Tri-star Trimarans which is currently Out of Business. This boat manufacturer code has other company names (TST 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 (Tri-star Trimarans) is owned by Ed Horstman and is located at P O Box 286 in Venice 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. Tri-star Trimarans has started making boats, yachts or other watercraft as of 6/3/1981 and went out of business on (2/6/1989) in the following country: USA.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: 2/89 Oob Per Msp Los.