Document Type : Research Paper

Author

• Seyyed Yahya Safavi

Assistant Professor, Imam Hosein University

Abstract

The surface and in-depth marine topography of each ocean include continental shelf, continental slope, and deep islands and areas. Amphibious forces deal with marginal areas, especially coasts, approaches to the coasts and straits, while mariners are associated with mountain ranges, deep pits and vast plains hidden in the seabed.