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PennyP

3,297 Posts.

47

12/11/21

14:56

Post #: 57532909
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Originally posted by gtc61: ↑

mmmm, soundings to 3200 metres in1922, don't believe sonar was even invented then, certainly not to detect temperatures due to changing water density, straight to the bs bin, and no place in the humour forum

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Actually, Some of the first deep soundings were taken and published in 1877. Check out "The cruise of HMS Challenger by WJ Spry RN."
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