Celestial navigation series, part eight
In this installment, we’ll cover running fixes and the hierarchy of positions from dead reckoning position to multiple simultaneous lines of position fixes.
September/October Issue 257: Vagabonding under sail
While he is best remembered as the designer of a host of famous yachts including the Westsail, Pacific Seacraft, Cabo Rico, Dana 24 and Columbia, English-born W.I.B. Crealock (1920-2009) began his love affair with sailboats in 1948 when he and three friends sailed from England to British Guiana.
July/August Issue 256: On the hunt for 80 years
Charles W. Morgan is the last remaining American whaling ship of a fleet that once numbered over 2,000 vessels.
Celestial navigation series, part seven
In this installment, we’ll cover the HO 249 sight reduction tables and how to plot a line of position (LOP).
The wandering magnetic pole
The Earth’s Magnetic North Pole, where the lines of magnetic force enter the Earth perpendicular to the globe’s surface, is actually a wandering location.
Celestial navigation series, part six
In this installment, we’ll cover time, time zones and the Nautical Almanac.
May/June Issue 255: The Golden Globe Race
The first Golden Globe nonstop around-the-world race was held 50 years ago in 1968-69 as a response to Sir Francis Chichester’s single-handed, one-stop circumnavigation a few years before.
Celestial navigation series, part 5
In this installment, we’ll cover sextants and sight taking, and the corrections you’ll need to apply to your sight.
The four errors in a sextant
Exploring collimation error, perpendicularity of the index mirror error, side error and index error.
March/April Issue 253: A black cat aboard Nancy Hanks
Many a ship has sailed with a cat aboard. Cats were often carried on sailing ships to hunt rodents but also simply for their companionship.
Celestial navigation series, part four
In this installment, we’ll cover Local Hour Angle (LHA), and determining assumed longitude and assumed latitude. We’ll also look at the spherical trigonometric process for doing sight reduction.
