Vortex Attenuators Explained

[He Who Shall Not Be Named]

Commercial ships use them to save fuel. Submarines use them to attenuate wake in order to defeat sonar and pressure sensor capture of wake artifacts.

First unclassified discussion of this topic I've run across.

https://youtu.be/a8PjWSeLUzY

David

[redboat219]

I thought they were either nonrotating or contrarotating to the prop.

[Das Boot]

Start the video at 2:00 to skip the pats on the back.