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    Re: Name for sixty nautical miles
    From: Don Seltzer
    Date: 2016 Mar 18, 17:18 -0400
    I was at the Peabody Essex Museum today, and in one of the exhibits I viewed a 17th century Dutch map of the Atlantic.  Down the middle of the chart was a longitude scale marked in degrees on the right side.  On the left side the markings ran 15 to the degree.  I am guessing that at that time, the Dutch had defined the sea league as 4 nautical miles.

    Another proposal for Frank:  2 Leagues (American and National) = 1 Major League.  This lends itself nicely to decimalization.  1 Degree of a Great Circle = exactly 10 Major Leagues.

    Don Seltzer

    On Thu, Mar 17, 2016 at 8:41 PM, Don Seltzer <timoneer@gmail.com> wrote:

    On Thu, Mar 17, 2016 at 4:48 PM, Philip Lange <NoReply_PhilipLange@fer3.com> wrote:
    If memory serves, a Cable is 100 Fathoms and a League is 10 Cables or 1000 Fathoms.= 1 nautical mile

    Different countries have had different definitions of a league, and a land league is often shorter than a sea league, but it always has been considered to be several miles.

    In the UK and the US, a sea league has generally been equated with three nautical miles.

    Don Seltzer


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