M& D Deep Ducking. Latitudes and Departures

[M Thomas Stevenson]

From other thread:

My partner's dad is a land surveyor, and me being interested in anything, I got to talking to him about his job, how it works etc.. . . Basically L&D is the north-south line (L) and the east to west line (D) of a kind-of grid. You use them in conjunction with one another to calculate the place of something on the grid. N-S, Scottish-Southerner; E-W, Britain-America. . .?

. . . But this explains it better: http://www.cfr.washington.edu/classes.esrm.304/Spring2011/Documents/Hurvitz_Schiess/procedures/latitudes_and_departures.html

On 7 January 2015, at 10:47, Mark Kohut <mark.kohut at gmail.com> wrote:

Alice's remark on Departures as deaths reminded me that we did not riff on
Latitudes and Departures. A change-up from the expected Latitudes and
Longitudes.

I skipped right over, mentally. Alice's association with Departures.
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