Re: [LEAPSECS] Risks of change to UTC

From: John Cowan <>
Date: Fri, 20 Jan 2006 17:57:50 -0500

James Maynard scripsit:

> Small boats, sea water, and electrical systems don't mix very well. The
> damp, salty environment all too often leads to failures of a boat's
> electrical system. A prudent sailor should not rely for navigation only
> on electrically powered systems like GPS or loran.

Your points are excellent, although it seems to me that a wind-up GPS
receiver is a possibility.

> But if UTC is allowed to drift away from UT1 by eliminating leap
> seconds, celestial navigation fixes will become less and less useful. A
> time error of half an hour in UT1 equates about to 450 NM at the equator.

Navigators are clearly people who would need access to |TI-UT1| along with
astronomers, yes.

John Cowan
Mr. Henry James writes fiction as if it were a painful duty.  --Oscar Wilde
Received on Fri Jan 20 2006 - 14:58:19 PST

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