This is a list of seas of the World Ocean, including marginal seas, areas of water, various gulfs, bights, bays, and straits. [2] . In many cases it is a matter of tradition for a body of water to be …

Sea area A1 is that sea area which is within a circle of radius A nautical miles over which the radio propagation path lies substantially over water. The radius A is equal to the transmission …

2024年12月13日 · The Area is comprised of the seabed and subsoil beyond the limits of national jurisdiction. It does not include superjacent waters (i.e., the water column) or the air space …

2024年2月17日 · The area outside that covered by areas A1, A2 and A3 is called Sea Area A4 Area. Ships traveling these regions must carry a DSC-equipped HF radiotelephone, in addition …

The Coast Guard defines Sea Area A1 as those areas where more than ninety percent of the area within 20 nautical miles seaward of the territorial baseline along the East, West and Gulf …

GMDSS divides the world’s oceans into four “sea areas”, designated A1 through A4. An area within the radiotelephone coverage of at least one VHF coast station in continuous digital …

A sea is a large body of salt water. There are particular seas and the sea. The sea commonly refers to the ocean, the interconnected body of seawaters that spans most of Earth. Particular …

GMDSS的基本概念是岸上的搜寻当局以及遇险船舶和遇险人员附近的其他船舶，能迅速接收到遇险事件的报警，并毫不延迟地进行协调搜救援助。 GMDSS还提供紧急和安全通信并播发海上 …

The terms "the ocean" or "the sea" used without specification refer to the interconnected body of salt water covering the majority of Earth's surface. [10] [11] It includes the Pacific, Atlantic, …

必应词典为您提供sea area的释义，n. 海区； 网络释义： 海域；舟山海域；海区海域面积；