Tracking Charity Row using Solar Power

The Charity Row Team are making thier own small contribution to 'World Environment Day' - by using Solar Power for navigation & tracking. Its available everywhere (during daylight of course) and its free! The boat installation uses two flat-panel solar arrays, which provide power for a chartplotter, auto-tiller and VHF radio. That takes care of navigation, steering & communications, but what about tracking this epic journey?

The DQ52 GPS tracking device uses its own built-in solar unit,