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Showing posts with label celestial navigation. Show all posts
Showing posts with label celestial navigation. Show all posts

Tuesday, September 28, 2010

The Sextant Cruise: A Course and Sail in Celestial Navigation

 
Learn how to navigate with a sextant using today's advanced technology with Captain J. C. Waters aboard the Schooner  
SPIRIT OF INDEPENDENCE.

October 26, 2010
 
Schooner SPIRIT OF INDEPENDENCE sailing on the Elizabeth River.
The very technology that seemed to question  the viability of the practical use of the Sextant is now the tool that makes the Sextant once again an important navigation tool for the small boat cruiser as well as the professional navigator.   Traditional companion tools for the Sextant were the chronometer, almanac, sight reduction tables, worksheets, and plotting board.  All of these tools were required and were tedious and time consuming to work with and maintain.  Now enter the i-phone app “Star Pilot”, hand held computer with dedicated sight reduction program and the inexpensive digital watch.   Now the procedure to get a fix becomes:  Take the shot with the sextant, observe the time with the digital watch, enter the observed information in the i-phone app or the computer program and mark the fix on the chart.  Granted the i-phone is also a GPS tool but the i-phone app will still work even if the constellation of GPS satellites fell out of the sky.

Tamaya Spica Sextant
For the Sextant Cruise, we will have aboard, Sextants, handheld computers and will demonstrate the iphone app.  If you have an iphone or ipod that you wish to use, please load the app. STAR PILOT.  There may be other apps. available but this is the one we will be demonstrating.

The cruise  will  sail to the Chesapeake Bay in search of a  good sea horizon.  We'll take a series of sun shots to reduce, using programs that will give you feedback on your sextant skills and show you how easy it is to use a sextant.

Captain J. C. Waters instructing a course in celestial Navigation.
What you need to bring:  Required:  Watch.  Optional:  smart phone w/program, Sextant, etc.

 Cruise participants is limited to 16 people. Cost per participant is $65.00 and includes lunch aboard the schooner. Board the schooner SPIRIT OF INDEPENDENCE at Tidewater Marina, Olde Towne Portsmouth, Virginia  at the end of dock D. The SPIRIT OF INDEPENDENCE will set sail at 9:00 am and returning early evening.  No instruments required.

For additional information and to make reservations, call  Captain J C Waters at 757 971-1865 or Email  j.c.waters@earthlink.net.

Follow the link here for information about the Schooner SPIRIT OF INDEPENDENCE AT http://www.spiritofindependence.net/

Friday, April 2, 2010

Celestial Navigation Course Aboard the Schooner "Spirit of Independence"

Schooner SPIRIT OF INDEPENDENCE
Participants sight the sun using a sextant
Most of us are enthralled with the sea and are drawn to stories and movies that have a sea theme. We can all relate to the human experience of these stories and movies accept when we consider how they found their way across the featureless expanse of ocean. That to many of us is a mystery.


Peter Youngblood demonstrates the use of a sextant.
Recently, area sailors and crewmembers had a workup on celestial navigation in preparation for our cruise aboard Schooner SPIRIT OF INDEPENDENCE to Bermuda. The workup session was held on board at her berth, which is docked at Tidewater Yacht Marina in Portsmouth, VA. Sun sights were taken throughout the day, with emphases on sextant technique used to bring an object to the horizon. Between shooting sessions the group discussed the geometry behind finding ones position with a sextant. Additionally each person used his or her sight data for sight reduction using a celestial navigation computer program that removes the drudgery of using the almanac and sight reduction tables.

Captain J. C. Waters of the SPIRIT OF INDEPENDENCE
The workup continued the following weekend when the SPIRIT OF INDEPENDENCE cruised out to the Bay where they were able to take advantage of a true sea horizon for our shots.

If you and a group of your friends would like to plan a similar cruise with hands on experience let us hear from you.

Thanks goes to Joe Elder of Skipjack Nautical Wares, also of Portsmouth, who attended and brought with him several very nice sextants from his inventory.

Visit the Schooner SPIRIT OF INDEPENDENCE  by clicking on the link here. http://www.spiritofindependence.net/

Capt. J. C. Waters
Schooner SPIRIT OF INDEPENDENCE
j.c.waters@earthlink.com
757 971 1865

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