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The Portland Course Plotter
Also available with the 7″ Solid Brass Single Handed Divider as a Kit
Portland Course Plotter
Great
Awesome
Great easy to use!
The Portland Plotter is not used often in American sailing navigation courses but is the teaching plotter for the RYA in Britain. It avoids slippage problems with parallel rulers and seems more accurate since bearings and courses can be measured off meridians and parallels. It has built-in compensation for variation and deviation, if one desires. It is rather large which is both an advantage and disadvantage.
I personally prefer it because of slippage issues with parallel rulers and better accuracy with the scales. In summary, another excellent plotter that will suit some preferences better than others.
Portland Course Plotter
Great
Awesome
Great easy to use!
The Portland Plotter is not used often in American sailing navigation courses but is the teaching plotter for the RYA in Britain. It avoids slippage problems with parallel rulers and seems more accurate since bearings and courses can be measured off meridians and parallels. It has built-in compensation for variation and deviation, if one desires. It is rather large which is both an advantage and disadvantage.
I personally prefer it because of slippage issues with parallel rulers and better accuracy with the scales. In summary, another excellent plotter that will suit some preferences better than others.
+1 954-522-3321
sales@amnautical.com
American Nautical Services, Inc.
3311 S Andrews Ave, Suite 11
Fort Lauderdale, FL 33316
United States of America
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