equivalent to the old Greek fathom (6 Byzantine feet, m) and an "imperial" (????????, basilike) or "geometric orguia" (???u?????? ??????, geometrike orguiá) that was one-eighth longer (6 feet and a span, m).

International fathom

One international fathom is equal to:
* 1.8288 metres exactly (Official international definition of the fathom)

British fathom

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