The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is SEM. This MIC (SEM) stands for the company name Seal Marine Group Inc which is currently In Business. This boat manufacturer code has other company names (SEM sometimes goes by these name(s) if applicable: , , , or Seabeatle Submarines (oob)). This could happen if the US Coast Guard reissued the MIC to a new company after the first went out of business.
This company (Seal Marine Group Inc) is owned by Atalo Abuchaibe and is located at 10081 Nw 51 Lane 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. Seal Marine Group Inc has started making boats, yachts or other watercraft as of 6/13/2018.
More details at the US Coast Guard.
The US Coast guard provides this comment about this watercraft manufacturer: Manufacturing Subs For Use By Scuba Divers. 05/29/03 Oob Per Rni Seabeatle Submarines (oob) 3/6/2003..