Magnetic Compass - One of the oldest and most inexpensive navigational instruments used by seamen for many years in order to find directions., The echo sounder (or sonar) - Works by sending out pulses of sound, which hit on surfaces and are reflected back to the instrument., Radar - Used to detect objects, such as other boats and the coastline., Satellite navigation system - Uses satellites above the Earth to determine the position of the vessel.,

Navigational devices used at sea

bởi
In
Nhúng

Bảng xếp hạng

Phong cách trực quan

Tùy chọn

Chuyển đổi mẫu

Bạn có muốn khôi phục tự động lưu: không?