A map, a nautical chart, magnifying glass, and compass rose.

Ship Calculators

Swinging Circle Calculator

Finding your swinging circle given your ship's length and the number of shackles used.
Easily calculate your swinging circle when anchoring.

Arc to Time Converter

Converting Arc in degrees, minutes, and seconds to Time in hours, minutes, and seconds.
Easily convert arc to time with this simple tool.

Time to Arc Converter

Converter of time in hours minutes and seconds to its equivalent Arc in degrees, minutes, and seconds.
Find the arc equivalent of any given time.

Scope & Chain Length Calculator

A converter/ calculator for finding the scope of the anchor, length of chain, and/ or water depth depending on two given values.
Easily calculate your swinging circle when anchoring.
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