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Sounding Poles by Sight
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Coast-Geodetic-Survey
Nautical Charting
Soundings
Sounding Poles & Soundings by Sight
Soundings
Using sounding pole to measure depth in shallow water.Combined operations party of B. H. Rigg
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Using sounding pole to measure depths.Combined operations party of William D. Patterson
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Low tide - rock shows where vessel struck and then sank.Vessel captain claimed to be in mid-channel far from any hazards.Paint, metal fragments, and rivets proved differently
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Egyptian tomb painting from 1450 B.C. showing officer with sounding pole.Officer is telling crew to come ahead slow.Engineers with cat-o'-nine-tails assuring proper response from engines
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St. Brendan striking out into the Atlantic - about 6th Century A.D.St. Brendan checking depths with his sounding pole
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