The Sextant Handbook

Author: Bruce Bauer
Publisher: McGraw Hill Professional
ISBN: 9780070052192
Size: 15.82 MB
Format: PDF, ePub, Docs
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I know from experience. This book should be mandatory equipment on every boat that goes offshore."--Wayne Carpenter, Author, The Voyage of Kristina

Wilderness Navigation Handbook

Author: Fred Touche
Publisher: Touche Publishing
ISBN: 097325274X
Size: 27.60 MB
Format: PDF, ePub
View: 1767
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Aside from being tedious, sextant calculations are riddled with jargon and
acronyms, so it's easy to get confused. Develop a consistent routine to reduce the
chance of error. The following procedure is an outline of how to compute a
position fix the hard way by using an almanac and sight reduction tables. Each
step is followed by an example. The best way to comprehend what is going on is
to go through the calculations with an almanac and sight reduction tables at hand
. Take sextant ...

Sextants At Greenwich

Author: W.F.J. Mörzer Bruyns
Publisher: Oxford University Press
ISBN: 0199532540
Size: 17.61 MB
Format: PDF, Kindle
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Mörzer Bruyns, 'The Navigating Instruments of the National Maritime Museum
Greenwich', 27,The Neill sextant is in the MSM, inv. no. 1955.271; a sextant in the
MWC&S is signed 'Made for the Sailors' Home Liverpool by Heath and Co Ltd.
Crayford, London S.E', inv. no. 1997.4320.122; with thanks to Laureen Sadlier,
registrar of the MWC&S. Bauer, The Sextant Handbook,125. Messerschmitt, '
Ergebnisse von Sextantenprüfungen', 42–3. Other English sextants included
examples by ...

Reeds Ocean Handbook

Author: Bill Johnson
Publisher: Bloomsbury Publishing
ISBN: 1472921437
Size: 10.73 MB
Format: PDF, Mobi
View: 3591
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The sextant A sextant (or octant, which is similar) is an optical instrument for
measuring the angle between two distant objects. The sextant gives the user two
views, side by side, of two distant objects. When you line up the images, the
instrument measures the angle between the lines of sight to the two objects. ◇
One line of sight is straight ahead (the red Line A in Fig 4.6). ◇ The other is along
the green Line B. This view is a reflection in the fixed horizon mirror (M1), back to
the index ...

Reeds Skipper S Handbook

Author: Malcolm Pearson
Publisher: A&C Black
ISBN: 1408107724
Size: 71.28 MB
Format: PDF, Mobi
View: 199
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Taking a vertical sextant angle (VSA) on a lighthouse Hold the sextant vertically,
set the index to zero and view the centre of the light through the telescope.The
true image will be seen through the plain half of the horizon glass and the
reflected image in the mirror half (Fig 1). Both images should coincide. Turn the
micrometer drum so that the index bar moves along the arc away from you and
the image will separate, the reflected image moving downward.Tilt the sextant to
follow this ...


Size: 73.21 MB
Format: PDF
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Other sections cover eating ashore, anchoring, provisioning and services and a
host of practical matters ranging from sunburn to garbage. One entire chapter is
devoted to suggested itineraries complete with distances and suggested
schedules, and the bibliography lists other books as well as cruising guides. A
great book for first-timers as well as experienced Caribbean sailors. The Sextant
Handbook, by Bruce Bauer; Azimuth Press (Box 4039, Annapolis, Md. 21403);
192 pages; ...

The Flight Navigator Handbook

Author: Federal Aviation Administration Federal Aviation Administration
Publisher: Skyhorse Publishing, Inc.
ISBN: 1628734728
Size: 16.90 MB
Format: PDF, Docs
View: 3325
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Instrument Error Index error is usually the largest mechanical error in the sextant.
This erroris causedby improper alignment of the index prism with the altitude
counter. No matter how carefullya sextant is handled, it is likely to have some
index error. If the error is small, the sextant need not be readjusted; each Hs can
be corrected by the amount of the error. This means that the index error ofthe
sextant mustbeknown toobtainan accurate celestial LOP. Another mechanical
error found in ...

Cruising World

Size: 17.98 MB
Format: PDF, ePub, Mobi
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THE SEXTANT HANDBOOK, Adjustment, Repair; Use and History fills that
information void and is the one essential manual needed by every celestial
navigator. Not a dull compendium of facts, but a working library of How-To-Do-It
features about every major aspect of the Sextant . . . Plus a fascinating history of
the sextant starting with the astrolabe and working through the latitude hook,
quadrant, cross-staff and backstafll AN IMPORTANT REFERENCE FOR EVERY

A Handbook For Field Service Or Field Pocket Book

Author: John Henry Lefroy (sir.)
Size: 52.80 MB
Format: PDF, ePub
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To make an observation with Eadley's sextant. Ex. To find the sun's altitude
above the sea horizon. — Hold the sextant vertically in the plane of the sun's
centre. Turn down the sun-glaBses as required. Slide the vernier along, until the
sun comes down to the horizon ; clamp it and perfect the contact by the tangent
screw, vibrating the sextant round the line of sight, to make the lower limb of the
sun touch the horizon. Bead the angle. When the artificial horizon is used, bring
the upper or ...

Marine Mammal Observer And Passive Acoustic Monitoring Handbook

Author: Victoria Todd
Publisher: Pelagic Publishing Ltd
ISBN: 1907807683
Size: 67.19 MB
Format: PDF, ePub, Mobi
View: 5313
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An alternative rangefinding technique is the sextant, which MMOs are permitted
to use optionally (binocular reticles and range sticks are equally accepted) in the
New Zealand Government's Code of Conduct (CoC); sextants are not used
elsewhere generally. To an untrained eye, a sextant appears complex and
difficult to use, but in the simplest of terms, it estimates range by measuring the
angle between two objects, more specifically, the angle between the horizon and
a target.