Sailors Choice Seamanship & Navigation

Sailors Choice Seamanship and Navigation

Code Flags & Pennants	Charts & Symbols	Communication Lights	Lines & Rope Knots Marlinspike	Reference Collections	Safety Man Overboard
Marks & Buoys	Measurements Nautical Mile Metrics	Navigation Rules of the Road	Time & Longitude The Prime Meridian	GPS What is It

Charts & Symbols

Flex GPS This software is developed to simplify the usage of maps in combination with a GPS Receiver.

Lines and Rope

Why Knot? The 42nd Brighton (Saltdean) Scout Group from South Essex in the UK will literally "show" you the why's and how's of knots!

Or give Roper's Knots a try, an awarding winning site, a member of the International Guild of Knot Tyers and yes, there is Knot News!

Knot's Knotes, learn to tie knots in spaghetti

Notable Knot Index, with tips for untying jammed knots

Measurements

A fathom is 6 feet, the length of rope a man can extend from open arm to open arm. The rope was lowered into the sea to measure depth.
A cable length is the length of a ship's cable, about 600 feet.
A nautical mile is 10 cable lengths, or 6,076 feet.
1 nautical mile = 1.1515 miles
A knot is the measure of speed on water. One knot is 1 nautical mile per hour.
A nautical mile is 6,076 feet.

Sailors Choice Metric Conversion Charts will help you figure out those pesky measurements! (If I can understand them, so can you!)

Time & Longitude

The Greenwich Prime Meridian The line in Greenwich represents the Prime Meridian of the World - Longitude 0º. Every place on Earth is measured in terms of its distance east or west from this line. The line itself divides the eastern and western hemispheres of the Earth - just as the Equator divides the northern and southern hemispheres.

In the dark as to what to buy those special loved ones?
Try All Nautical.com

All Nautical' gifts and decorations has the perfect gift, either for yourself or that special someone, the executive in your life, decorating your home or office ....we have what you are looking for or we can usually get it for you.
Selections include Lighthouses, Chelsea Clocks, Affordable Fine Art, Nautical Jewelry, Galileo Thermometers, Ornaments & Occasion Items, Accent Furniture and Nautical Gifts & Decor

Just a sample of the handsome ship's clocks, barometers, thermometers and tide clocks in stock. This one features the Flags and Pennant motif

GPS

GPS or Global Positioning System is a position determining system based on transmission and location pinpointing made by tracking several satellite transmissions at one point on the earth. The Global Positioning Overview explains....

Navigation

Have you ever taken a navigation class or are you planning to take one? If so, you need the Coastal Navigation Tool. No more frustrating formulas to remember like "East is Least" or "True Virtue Makes Dull Company" or when to Add - when to Subtract. Now with the turn of only two dials, you can make Corrections of Variation and/or Deviation and find the Correct Course to Steer instantly.

Don't just surf the web, sail in your computer!