I have a circular domain with all ocean boundaries and only an offshore reef structure that I wish to model (no islands or internal land boundaries). The domain generation was easy, but I get no data (NaN), or meaningless data from CGWAVE when i perscribe either circular parabolic boundaries (in the first instance) or Bassel series (in the second instance). Has anyone else attempted to run CGWAVE in SMS with circular boundaries and had any luck... are there tricks, or hints on how to get CGWAVE to work, or does anyone have any guidance to offer? Cheers,