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Re: Dip short
From: Stan K
Date: 2018 Jun 13, 01:50 -0400

Jackson,

FWIW, the Power Squadrons used to publish their own dip short tables for use by inland students who might only have access to locations with limited dip short distances. The shortest distances listed are 100 yards and 100 meters. That table has heights of eye from 3 feet to 18 feet and 1 meter to 6 meters.

FYI, the longest distances in any table are 5 nautical miles (9260 meters) and 5 statute miles (8800 meters). The former only shows a height of eye of 6 meters, and the latter 15 and 18 feet, any lower providing a natural horizon.

Here's a section of the Celestial Tools Help:

Note for Dip Short sights: For a given height of eye there is a dip short distance beyond which only standard dip values (based only on height of eye)

are required. If the dip short distance exceeds the distance to the natural horizon for the entered height of eye, the program will automatically switch

the Horizon from Dip Short to Natural. Note that entry of the numerical portion of Ds dist. is limited to five characters, including a decimal point, which

should cover all reasonable values.

Stan

-----Original Message-----
From: Jackson McDonald <NoReply_McDonald@navlist.net>
To: slk1000 <slk1000@aol.com>
Sent: Tue, Jun 12, 2018 9:02 pm
Subject: [NavList] Dip short

What is the shortest practical  dip short?

A few hundred meters?  More?

Height of eye must also play a role in answering this question.

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