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This topic has been moved to General Discussion of Inland and Coastal Navigation.    
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» Online Classroom   » Tech Support   » Inland & Coastal Navigation Course   » How to find a chart location used in a practice problem

Author Topic: How to find a chart location used in a practice problem
David Burch

 - posted March 20, 2004 09:33 AM      Profile for David Burch           Edit/Delete Post 
We have practice problems that might state, for example, "we are located about 1 mile north of Ediz Hook...." and immediately the question arises as to where is Ediz Hook. This general type of question often comes up in navigation—to locate a place on a chart given only a name or guess of a name.

In the Introduction to Section I problems we suggest that you use the index to the Coast Pilot or the Light List to solve this task, and we have tried to insure that these indexes do meet that need... and this is indeed the exact procedure you would follow when underway with real navigation.

In this example, you will find Ediz Hook in both the Light List (because there happens to be a light on the point, otherwise if no aid to navigation in the region it would not be in the light list), and you will find it in the coast pilot. Generally if a landmark is at all prominent or notable from a navigation point of view it will be listed in the coast pilot.

The index to the coast pilot is on page 38 of the problems book and the index to the Light List is no page 48.

The Light List will give the Lat-Lon of an nav aid in the vicinity but not describe the region itself. The Coast Pilot will describe the region and its location relative to together land marks nearby as well as list the Lat-Lon of prominent lights near by. It generally would not list the coordinates of buoys, so if only a buoy is nearby the light list wouold be best. In general, though, the Coast Pilot is the first place to turn to when looking for a landmark.

From: Starpath, Seattle, WA

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