Space Print from NASA: Three Seasat Maps. These maps were prepared using altimeter data from the Seasat oceanographic satellite. The maps show windspeed on 6th October 1978. Seasat was launched on 27th June 1978 and carried experiments measure sea ice, sea surface profiles and wave heights (NASA Media Archives). Choose to buy this picture as an unframed print or poster, a framed print or a mounted box canvas print.