What is the geoid?
From NOAA While we often think of the earth as a sphere, our planet is […]
From NOAA While we often think of the earth as a sphere, our planet is […]
From NOAA A geodetic datum is an abstract coordinate system with a reference surface (such […]
From NOAA What is a perigean spring tide? A perigean spring tide occurs when […]
From NOAA Under the Endangered Species Act, a species may be listed as either threatened […]
From NOAA A nautical mile measures distance and a knot measures speed. A nautical mile […]
From NOAA Some seaweeds are microscopic, such as the phytoplankton that live suspended in the […]
From NOAA Storm surge is the rise in seawater level caused solely by a storm. […]
From NOAA The term “bathymetry” originally referred to the ocean’s depth relative to sea level, […]
From NOAA The Mariner’s 1-2-3 Rule is the guideline mariners follow to keep out of […]
From NOAA Seaspeak is the official language of navigators the world over. Have you ever […]
Copyright © All rights reserved. 2011-2018 Sherpa Multimedia, Inc. 1343 Irving Park Rd. Unit 13493 Chicago · IL 60613 · United States