The manufacturer identification code (MIC) of your craft identification number (CIN or HIN) is NMX. This MIC (NMX) stands for the company name Neptune Mfg Co which is currently Out of Business. This boat manufacturer code has other company names (NMX sometimes goes by these name(s) if applicable: Vakpak Neptune, , , 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 (Neptune Mfg Co) is owned by and is located at 1824 Phoenix Ave in Jacksonville 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. Neptune Mfg Co has started making boats, yachts and other watercraft as of and went out of business on (4/13/1978) in the following country: USA.
More details at the US Coast Guard.