In naval terminology, how long is one fathom?

In naval terminology, one fathom is equal to 6 feet. This measurement is primarily used in maritime contexts to indicate the depth of water. The use of fathoms allows sailors and navigators to communicate and understand depth in a consistent manner, which is essential for safe navigation, particularly in areas with varying seabed topography. The fathom measurement originated from the distance between a person's outstretched arms, which reflects the historical practices of seafarers when gauging depth. By using fathoms, rather than feet or other units, the maritime community facilitates clearer and more effective communication regarding water depths and anchoring locations.