How the echo sounder should be used?
20 Dec '18, 04:33
The echo sounder should always be used when making a landfall and kept switched on in coastal and pilotage waters. If the echo sounder is fitted with a shallow water alarm, the alarm should be set to an appropriate safe depth to warn of approaching shallow water. (5th edition BPG 4.5)
20 Dec '18, 04:34