On Mon, 2009-03-09 at 09:14 +0000, Andy Deakin wrote: > Is there any PD(ish) elevation data for undersea to be able to mark > contours? There are several data sources, search for 'bathymetric' data and you should find things like the srtm30plus dataset: http://topex.ucsd.edu/WWW_html/srtm30_plus.html Jon