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Pit sword

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The pit sword (also known as a rodmeter) is a blade of metal or plastic that extends into the water beneath the hull of a ship.[1] It is part of the pitometer log, a device for measuring the ship's speed through the water.

See also

References

  1. ^ "Underwater Log Systems". USS Bowfin Submarine Museum & Park. 2002. Archived from the original on 2006-08-25. Retrieved 2006-08-26.
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