how deep is a fathom?
1 Fathom = 1.8288 Meters. Fathom is an imperial, U.S. customary length unit and usually used to measure the depth of water. The abbreviation is ftm. Meter is a metric system base length unit and defined as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. It equals to 3.2808399 feet or 39.3700787 inches.