SeaTTY
A program to receive weather reports, navigational warnings and weather charts transmitted on longwave and shortwave bands in RTTY, NAVTEX and HF-FAX (WEFAX) modes. Software also can automatically save NOAA Weather Radio SAME voice messages (NWR SAME) and them digital headers. ... None additional hardware is required - your need only receiver and computer with a sound card.
http://www.dxsoft.com/seatty.zip - 2Mb - Download - Screenshot