How Do You Read Nautical Chart Depth

The first number indicates the number of fathoms. The second number, which will be a small subscript, is the number of additional feet. For example, a listing of 0 and 3 means a depth of 0 fathoms, 3 feet. A listing of 3 and 2 means 3 fathoms, 2 feet, or 20 feet total.

How is depth measured on a chart?

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 .

What is chart depth?

A depth chart is a graphical representation of buy and sell orders for a specific asset at various prices. A depth chart illustrates both sides of supply and demand to show how much of an asset you can sell at a particular price point.