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A comment on Post-Panamax Bulk Carrier Rides Air Bubble Blanket to Reduce Emissions.

Re:Post-Panamax Bulk Carrier Rides Air Bubble Blanket to Red... by quanticle on Monday November 03, 2014 @01:23AM (#8549570)
Interesting. I know Navy vessels do this [1] but in their case, the motivation is to trap machinery noise and reduce the sonar profile of the vessel.

[1] http://en.wikipedia.org/wiki/Prairie-Masker

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Re:Post-Panamax Bulk Carrier Rides Air Bubble Blanket to Red... by zaroth on Monday November 03, 2014 @01:44AM (#8549638)
Articles say an 'unexpected benefit' is reduced prop noise. They did study the effect of bubbles on prop efficiency and apparently it is minimal, but noise is reduced significantly.
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