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1982 Plath Navistar Classic 4 x 40 Scope 5 Stars

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Plath Navistar Classic Sextant 4 x 40 Scope Stars
 

This Fine Sextant Has Been Sold.
Thank you!

1982 C. PLATH NAVISTAR CLASSIC SEXTANT 4 X 40 SCOPE - 5 STARS

 

1982 Plath Navistar Classic sextant with 4 x0 scope image

We are the premier source for all versions of the Plath Navistar premium sextants and have specialized in their sale. We have sold more than any other dealer in the world! The pictures in this presentation are all of the actual instrument.

Presented is a C. Plath Navistar Classic sextant, Serial No.62559, with matching certificate dated 7.4.1982. This sextant served in a large motor vessel since it was purchased 32 years ago by a shipping company. Our tests show that it is still in excellent condition.  The sextant was used as a back-up to what was then the early days of satellite navigation which was first introduced for commercial use in the early 1980's. Back then, there were only six satellites in space so the fix interval could be quite long, averaging 12-14 hours between them.  Because of this time delay and because the coverage was not good in certain areas of the world, ships still found the use of celestial navigation to be of great help. There is an old certificate of inspection on the top of the case from B. Cooke & Son, LTD, dating back to 1984.

DHI LABEL: The Deutche Hydrographic Institute stamp of approval on the index arm elevates it to the highest level because it indicates this instrument was tested by DHI, and found to meet the more stringent standards for commercial use. Hence, this sextant sold for more originally then the regular Navistar Classic.

Back of Plath Navistar sextant SN 62559 image

Back of sextant with 4 x 40 scope mounted.

The Navistar Classic was the top of the Plath line and was made in limited quantities, and was manufactured with a guaranteed non-adjustable instrument error of 10 arc seconds or less. It sold for a premium over all its other sextants. For example, almost 30 years ago, they sold for over $1000.00, and as recently as 2001, the price had risen to $4000.00.  In our opinion, there is no sextant in current production that achieves this level of quality.


 
This is the type of ship it may have served in.   

CONDITION: There is little fault to find with the sextant except for some very minor paint loss on the top edge of the index shades and some minor signs of use to the green shock absorbent cushion in which the sextant is held in its case. The Vernier has lightened with age, and the small standard brush is missing. An electrician had installed two plugs one of which was wired, but it was too small for the female receptacle in the handle.  We installed the correct size plug and a  fresh bulb so now the light works. The case's exterior shows some of the usual marks of age and use that you would expect, and the exterior hardware shows some light rust spots on its top edge. All these things are minor and only mentioned for the sake of completeness. The index error is 1 minute on the arc and there is minimal side error.

Showing the plugs that were added image
The red plug was replaced with a black one that fits.

 

WHAT IS A NAVISTAR CLASSIC: There are some sellers, either through ignorance or on purpose, call some Plath sextants by this name or claim they were made to the same standards or were the predecessor of this instrument.

Don't confuse this model with the similarly named Navistar Professional which. in our opinion is the worst sextant made by Plath or the Navistar Traditional which was made shortly before sextant production ended. That instrument has an error up to 20 arc seconds.

You can identify the Navistar Classic by these clues:

1. It has a special micrometer drum
2. The Navistar brand imprint on the arc.
3. The vernier has six indents and reads to 10 seconds of arc.
4. Comes with a fine wood case with a green absorbent liner as standard 
5. And originally came with an instruction booklet, and Plath's
certification with matching numbers.

For the seven year period from 1978 through 1985, only 1693 Navistar Classics were made. That is only 211 per year to satisfy worldwide demand. 

STAR RANKING: Taking the minor evidence of use into account and its years of service at sea, it easily deserves a 5 Star ranking.

This is the 23nd Navistar we've offered. In our opinion, they are the finest of the contemporary sextants. They will be equally desirable at sea or in a collection of only the best, and should only appreciate in value.

Perfect horizon mirror image
Perfect horizon mirror
Equally fawless index mirroe image
Equally flawless index mirror
Vernier reads to 10 arcseconds image
Vernier with working light above index
Navistar Classic imprint and serail number image

Navistar Classic imprint and serial number

 
Closed case image
Open case with sextant and accessories image
Top. Picture of closed case with COI on top.  Bottom. The open case with the sextant and accessories

 

This C. Plath Navistar Classic requires someone who can appreciate the fine points of a sextant, and is willing to pay an appropriate price for this level of quality and excellence. It is suitable for a collector or for use at sea.
OUR QUALIFICATIONS: We are one of the few company's still selling navigation instruments   that know anything about them. For purposes of judging whether Joel's opinion counts, he was the editor of the chapter on sextants of the 1977 Edition of "Bowditch", The American Practical Navigator, NAVPUB 9; a member of the U.S. Naval Academy Navigation Symposium, 1975 -1978; the author of a book on marine sextants, Cornell Maritime Press,1975, and the founding president of Nautech Maritime Corporation which partnered with Tamaya of Japan in the introduction of the MS 733 Spica, the MS 833, Jupiter, MS 933 Venus sextants and the famous NC-2 navigation computer, in the U.S. market. Joel is a retired Master Upon Oceans, and held a U.S. Navy "D" Qualification as a Senior Skipper - Oceans. For six years he was a Varsity Offshore Sailing Team Coach at the U.S. Naval Academy. Some of his memberships have included the: Association of Naval Aviation, Silver Wings, The Tailhook Association, Naval Academy Sailing Squadron, McCampbell's Aces Squadron, Naval Historical Foundation, and the Naval Order of the United States.

C. PLATH COMPANY HISTORY: In brief, Carl Plath started manufacturing sextants, in addition to other nautical products, in Hamburg Germany in 1862 though the purchase of the David Filby instrument company though the company's origin dates back to 1837. As a result WW II, C.Plath was dismantled completely by the occupation forces. Around 1950, various prohibitions were lifted, and C. Plath was allowed to begin production again of sextants and other nautical instruments. Also in 1949,C.Plath was offered a gyrocompass patent and in 1951 the first gyrocompass designed to this patent was presented to the public. C.Plath progressed from the role of instrument maker to that of a modern marine navigation equipment manufacturer. In the following years the product range was expanded by many more modern designs such as autopilots, speed logs, radio direction finders, etc.

In 1962 C.Plath was acquired by Litton Industries, a large American concern.The C.Plath North American Division was set up in 1978 in College Park near Washington. 1996 saw the introduction of the world's first fiber-optic solid-state gyrocompass by C.Plath. The first ever gyrocompass with no moving parts. Sperry Marine was formed in 1997 with the combination of C.Plath, Decca Marine and Sperry Marine with more organizational changes yet to come. After 163 years, C.Plath changes its name to Sperry Marine in May 2000. In 2001 Sperry Marine becomes part of the Northrop Grumman Corporation. In the 1990's Plath came out with a series of new sextant designs with overlapping designs and confusing names. They seemed to have lost their way. Shortly thereafter, C. Plath quit producing sextants. The parent company has completely liquidated everything including machinery, equipment and spare parts.

C. PLATH NAVISTAR CLASSIC SPECIFICATIONS:

Measuring Range: -5 to 125 degrees
Telescope: 4 x 40 Coated optics
Frame: Bronze with black enamel paint and bronze arc.
Micrometer Drum and Vernier Scale: reads to 10 seconds of arc
Index Mirror: 59 x 44 mm. aluminized on the rear side.
Horizon Mirror: 57mm diameter.
Shades:
4 for index mirror
3 for horizon mirror

Weight sextant: 4.2 lbs with 4 x 40 scope.
Weight case 6 lbs.

INCLUDED ARE:

  • 1 C. Plath Sextant frame
  • 1 4x 40 star scope 
  • 1 Mirror adjustment tool 
  • 1 Plath Navistar manual
  • 1 Certificate of accuracy 
  • Missing is the brush

STANDARD FLAT RATE SHIPPING, INSURANCE & PACKING to 48 contiguous States, $40.00

OUR UNCONDITIONAL NO NONSENSE GUARANTEE: If not completely satisfied with your purchase it may be returned, if without damage, within three days of receipt in its original packaging. Return items must be insured for their full value. Only a prior email authorization by us for the return is required. Shipping charges are included in this offer if the error is due to our fault.

International buyers welcome, but inquire first. We have satisfied customers in Argentina, Australia, Austria, Belgium, Bermuda, British Virgin Islands, Canada, Chile, China, Czech Republic, Democratic Republic of Congo, Denmark, Estonia, England, France, Germany, Greece, Holland, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Kuwait, Latvia, Luxembourg, Malaysia, Martinique, Mexico, New Zealand, Nigeria, Norway, Nova Scotia, Panama, Philippines, Poland, Portugal, Puerto Rico, Romania, Russia, Saudi Arabia, Scotland, Singapore, South Africa, Spain, St. Maarten, Sweden, Switzerland, Thailand, Turkey, United Arab Emirates, USVI and the Eastern Caribbean.

STANDARD FORMS OF PAYMENT are Bank wire transfer, cashier's check, money order, or personal check in which case the item will be held until cleared. Our prices are quoted net to us so that the use of credit cards or PayPal incur extra charges. Terms on overseas sales are different. 

This is the 23nd Navistar Classic or one of its variations that we have offered since 2005. In our opinion, they are the finest of the contemporary sextants. They will be equally desirable at sea or in a collection of only the finest.

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