Jerry Penry

The Drifters

“Although the Currents of the Ocean form a most important part of hydrography, yet it is only since the introduction of chronometers, and of celestial observations for the longitude at sea, (that is, not much more than forty years ago,) that a competent idea of their [currents] direction and f... (read more)
SEAEXPLORER Underwater Glider

SEAEXPLORER Underwater Glider

Find more information on:Geo-matching PNG