Pit sword

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 nautical vessel. ^[1] It is part of the pitometer log, a device for measuring the ship's speed through the water.

External links

• Commercial web site showing a typical pitometer log system.
• Historical site with information on US Navy submarine pitometer log systems during World War II. This site shows the pit sword or rodmeter as it is deployed.

References

1. ^ "Underwater Log Systems". USS Bowfin Submarine Museum & Park. 2002. Archived from the original on 2006-08-25. http://web.archive.org/web/20060825070849/http://www.bowfin.org/website/bowfin/bowfin_systems/log_sys/log_sys.htm. Retrieved 2006-08-26.