Pit sword explained

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

• Electromagnetic log
• Pitot tube

References

1. Web site: Underwater Log Systems. 2006-08-26. 2002. USS Bowfin Submarine Museum & Park. https://web.archive.org/web/20060825070849/http://www.bowfin.org/website/bowfin/bowfin_systems/log_sys/log_sys.htm . 2006-08-25.

External links

• 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.