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post #5 of Old 05-22-2008
Boasun
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A. If you have charts for that lake it should be on the chart, measured from the high water mark of the lake.
B. Measure the height of the towers supporting the wires. Using Trig. and a sextant.
C. Measure the low point of the catenary of the wire with a sextant and the water line of a boat that is directly under the wires. You do need to know your distance from that boat.
D. Shoot a line over the wire. and bring the ends together, trim at the water's level. Carefully retrieve the line, double it and measure.
E. Talk to the PR people of that power company and tell them that you are being given little or no information about the power lines height above the water. Smile when you do so. After all this is for safety. And those companies are always touting their safety concerns. THIS is ONE of THEM!

1600 Ton Master, 2nd Mate Unlimited Tonnage

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