CommonMarineViewer
   MarineViewer      --> pMarineViewer
   NavPlotViewer     --> logview / glogview
   CPAViewer         --> app_cpaview
   HexaViewer        --> app_hexaview
   PolyViewer        --> app_polyview


CommonMarineGUI (has-a CommonMarineViewer)
  CPA_GUI            --> app_cpaview
  HEXA_GUI           --> app_hexaview
  POLY_GUI           --> app_polyview

  CommonMarineSimGUI
     PMV_GUI         --> pMarineViewer
     REPLAY_GUI      --> logview / glogview