2M Navigation Assistant is a navigational application which combines an editor, a sailplan generator, and a mercator route plotter. Given a waypoint list, the program can generate a sailplan (waypoint sheet or route sheet) in ASCII text format suitable for printing or editing. In addition to a basic tabular listing, CSF (Comma-Separated Format), USCG AMVER, and USN MOVEREP formats can be selected, and you can add speeds, times of departure and arrival, great circle routings, chart lists, zone descriptions, and so on to enhance the output. 2M Navigation Assistant is a Microsoft Foundation Classes (MFC) program, which is based on the Multiple Document Interface (MDI) and the CEditView edit control class. The editor automatically selects erroneous lines within the source document, and allows for basic operations, such as undo, find, replace, go to line, and select all. The program processes an ASCII text file as input with the description, latitude, and longitude on sequential lines. All lines starting with an exclamation mark are command lines. This enables it to accept a great variety of formats, and facilitates cut-and-paste editing operations. Output files are also ASCII text files, which like the data files can be edited and printed on almost any device (a handy feature on poorly equipped vessels). 2M Navigation Assistant also allows a rapid plot on a basic world mercator map at almost any scale and with good speed. This map can be printed, but only on a graphics printer with a Windows driver.