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Tides and the Rule of Twelves

September 27, 2014/by Grant Headifen

Tides are often intimidating to sailors, but understanding tides can be made simple with the Rule of Twelves.

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Longitude Mystery

September 18, 2014/by Grant Headifen

The Longitude Mystery- zero degree line of longitude was selected and placed in Greenwich in 1751 and then in 1851 it was moved a few feet.

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How to use a Breton (Portland) Plotter

July 31, 2014/by Grant Headifen

Today, we’re discussing using a Breton Plotter, aka Portland Plotter, aka rotating protractor, to determine a course.

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International Navigation Rules of Preventing Collision at Sea

July 23, 2014/by Grant Headifen

Stand-On and Give-Way: You just might have it wrong… (Jump directly to the FREE updated International Rules of Preventing Collision at Sea course it’s quick, easy and entertaining) Two sail boats collide. One had wind over their port side and one had wind over their starboard side. The starboard tack boat saw the port tack boat […]

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Understanding Tides

May 4, 2014/by Grant Headifen

If you like this animation explanation please “LIKE” it and g+1 it. It’s a good exchange for the free value we provide here. thanks How the tides work in practice Here is an animation we came up with to help understand how the tides shift by about 1/2 an hour later each day when you […]

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What is VMG?

September 5, 2013/by Grant Headifen

VMG – Velocity Made Good and Polar Plots This discussion comes mostly out of our Electronic Navigation Course which is available also as an iPad Electronic Navigation Course App. For sailboats, VMG is slightly different than what you’d expect if you were navigating an airplane or power boat. For airplanes and powerboat VMG is your […]

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Navigation: Electronic or Paper charts?

April 20, 2013/by Grant Headifen

So here is a post I did on a recent linkedin forum for sailing instructors. >>>>>> Check this out – my 13 year old nephew recently refused to think about a home work problem and demanded that he look the answer up on the internet. I agree with using tools at hand but understanding the […]

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How to do a Running Fix

April 19, 2013/by Grant Headifen

Running Fix Explained This week we uploaded our updated Coastal Navigation course to Apple for publishing on iTunes as an interactive eLearning App. We’re very excited about this update because of the HTML 5 animations we’ve used to explain some of the concepts. Specifically in regards to this post, no where on the web have we […]

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Autopilot sailing to a waypoint

December 10, 2012/by Grant Headifen

Last weekend the NauticEd crew did a boat delivery for the local Moorings Yacht Charter company in New Zealand. We sailed from Auckland up to the Bay of Islands to deliver the yacht back to its charter base. The yacht was a Beneteau 37 2012 model and was appointed well and in great condition. The […]

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How to read a polar plot for sailboats

October 11, 2012/by Grant Headifen

The polar plot is the navigator’s friend. Below is an example for one particular boat for one particular true wind speed.

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