How long is one shot in nautical terms?

In nautical terms, one shot is defined as 15 fathoms. A fathom is a unit of measurement commonly used in maritime contexts, and it equals 6 feet. Thus, when you calculate 15 fathoms, you arrive at 90 feet (since 15 fathoms x 6 feet per fathom = 90 feet).

Understanding this measurement is crucial in navigation and maritime operations because it helps in determining distances when laying out anchors, mooring lines, or other navigation-related activities. The use of fathoms, specifically one shot equating to 15 fathoms, reflects the traditional and practical needs for measuring depths, as well as distances underwater in various seafaring scenarios.

The other options do not align with nautical conventions for measuring distances or depths, making them not suitable for this context.