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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Slocum's lunars
From: Fred Hebard
Date: 2003 Dec 15, 09:38 -0500
From: Fred Hebard
Date: 2003 Dec 15, 09:38 -0500
Frank, Up through Chapter 12, searching on the words latitude, Sun & meridian, I found the following references to noon sites: Chapter III: "At the meridian altitude of the sun I called aloud, "Eight bells," after the custom on a ship at sea." Chapter IV: "A meridian altitude and the distance on the patent log, which I always kept towing, told me that she had made a true course throughout the twenty-four hours." Chapter XI is the discussion of lunars. I will keep note of further mention of sights as I progress through the book. I see no evidence in the book, to that point, that Slocum was not using lunars on a regular basis, and some, that I have pointed out, that he was. Again, it appears in Chapter XI that Slocum was bragging about finding an error in tables, which is why the lunar was mentioned. It is quite easy to imagine the typesetter inserting the wrong column of type on a page, contrary to what has been argued here: it would depend on whether the type were assembled by row or by column. It would not surprise me if columns of numbers were assembled by column. I believe you have twisted the evidence into pretzels to support your hypothesis that Slocum only shot one lunar. When he says he was not a slavish practitioner, I believe he is merely saying he did not shoot lunars once or twice a day, as Bowditch recommends, but rather when he considered them necessary. When he mentions running down the latitude, he is bragging about his course not varying much even though he did not steer by the compass, since he could steer so easily by the stars combined with the relatively constant wind direction. This would be contrary to normal naval procedure, but was a perfectly workable procedure for an experienced mariner who answered to nobody but god. It is essentially a large part of the Polynesian/Micronesian method of navigation. Fred On Dec 15, 2003, at 12:58 AM, Frank Reed wrote: > Fred asked: > "Where is the evidence that Slocum ever took a sight of the sun or a > star to find his latitude?" > > There are quite a few direct references to Noon Sun latitudes in > SAATW. Download a copy of it and do a search on the words latitude, > Sun, meridian. You should be able to find most all of them. > > Slocum probably did not use stars for latitude. Nineteenth century > navigators rarely used stars. > > Frank E. Reed > [X] Mystic, Connecticut > [ ] Chicago, Illinois