how to chart course sailaway

What is the default longitude interval for Great Circle sailing routes?

According to the help feature of OpenCPN (user's manual) the default setting for longitude intervals for computing great circle sailing routes is 5 degrees...

How to calculate a great circle route?

A great circle route can be calculated using spherical trig...or by laying out a route on a great circle sailing chart (gnomonic projection) and taking the courses to steer from the chart at the desired longitude intervals and entering them into the chart plotter as way points.

What is the equivalent of jet stream on the sea?

The equivalent of jet stream on the sea is called trade winds.

Why do we use Great Circle routing?

Great Circle routing is generally done for aviation navigation as they are not worried about most islands getting in the way, and then you have to take jet stream into consideration. But for nautical navigation it is more of a vague notion, not a single plot. You will veer due to currents, and prevailing winds. You rarely worry about the "shortest distance" especially in a sailboat.

Can you draw a line on a globe?

Other than that I am not sure what you are looking to accomplish. Yes you can draw a line on a globe to give you general distances. There are web sites to help with the calculations ( Marine Great Circle Navigation Calculator is one) as they can get pretty complicated when trying to get a distance along a path on a sphere. (You should see the math wars that go on on geodesic dome forums!) But those are not anything more than general guides and will not even give an accurate path you will actual be sailing.

Can you use a chart plotter to see progress?

While you can use a chart plotter to see your progress on such a trip, they are more useful in more confined waters, and making sure you are on the general path to get where you want. You can zoom in to see reefs and rocks when you are near land.

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SailAway Learning & Academy believes that the opportunities for a full and satisfying life are based in a rich, rigorous, and varied education. The ability to obtain that kind of education rests on two cornerstones: literacy and understanding. All other academic and intellectual endeavors flow from these two fundamental components of learning.

How does sailaway work?

To fulfill that vision to enable and empower parents, SailAway designed its homeschool umbrella programs to ensure: 1 Requirements of Tennessee’s homeschool laws are fully met. 2 Accurate educational records are maintained for each student. 3 Real help is available. With two options to choose from, families can get the level of help they need, when, and if, they need it. 4 Children receive a recognized high school diploma from SailAway Academy, which opens the door to a lifetime of success. 5 Curriculum choice belongs to the parents, as does the decision to use co-ops, tutorials, individual tutors, online learning, and dual enrollment. 6 Record keeping and twice-a-year grade reports are streamlined and easy with Stellar, SailAway’s secure online record management system.

What is sailaway home school?

The SailAway Home School vision is simple: enable and empower families. We strive to enable them with freedom to choose which educational path is best for each child and empower them with solid support to be successful.

When do you have to report grades to Stellar?

Enter semester grades and attendance into Stellar by January 15 and June 15. Extensions will be considered upon request.Failure to submit grades and attendance by these dates will result in a $25 late fee. Grades and attendance MUST be reported each semester, by law. Read: HOW TO USE STELLAR