Again don't know about tsunami99 but I have used the following while in Turkey and West Coast of Scotland when chartering. www.memory-map.co.uk/maptech_marine_software.htm Then you buy the charts you need.
Another "don't know about tsunami but..."
I run Oziexplorer on a PDA with a GPS jacket and self-scanned charts. The software needs a conversion from desktop which is downloadable.
We have a new and genuine copy of Chartwork’s PC Planner program for sale on ebay. It includes the orginal CDROM media and a 34 page printed manual.
This versatile program will run on either a PC or Pocket PC.
Winchart Planner can accept data from any GPS unit that transmits data in NMEA 0183 format.
Features Include:- Vessel’s Postion, Track, Log, Route & Waypoints, Cross Track Error (XTE), Range & Bearing, SOG, COG, Track Up Display, Port & Marina Information, Point Information, Tidal Heights, Chart Rotation, Pan & Zoom and Auto Scroll. Buy it Now on Ebay for £75
I have the equivalent of the Mio 168 PPC and the screen would be useless in a cockpit in sunlight and poor in poor light. You would not be able to read it properly other than below.