[BitWielder1]

I'm so tired of so-called science that takes global warming as a given.
They never question the basic premise or whether warming is really bad or not, or how much is even within our control, if any.
Nor do they question how much bang for the buck there would be retrofitting thousands of ships.
Probably because there is no way to calculate that.
They just blatantly assume that every human activity "affects" the climate, presumably for the worse because it IS human activity.

[elcid1970]

This “study” probably has nothing whatsoever to do with cavitation, which is the generating of air bubbles in the water by the action of rotating propeller blades.

Severe cavitation reduces thrust efficiency & modern propellers are designed to minimize this phenomenon.

These scientists......I thought the article would be about weaponized air bubbles (no joke) caused by underwater detonations, which can literally break a ship in half.