Question

Depth of the ocean is measured by which instrument

Answer 1

Answer:

depth finder also called echo sounder is used

Answer 2

Answer:

SOnar devices

Water depths are measured by soundings usually acquired by hydrographic surveys. The depths may be in either feet or fathoms (the chart will indicate which). A fathom is a nautical unit of measurement and is equal to six feet . SOnar devices are used to measure the depth of sea.