They really are being built and used commercially. Probably incentives play a part in this, but their numbers are slowly increasing, so it's not totally vaporwa

They really are being built and used commercially. Probably incentives play a part in this, but their numbers are slowly increasing, so it's not totally vaporware (of course we don't need new articles every ~6 month talking about how amazing this technique is) [0] [0] https://en.wikipedia.org/wiki/Rotor_ship#Modern_vessels https://en.wikipedia.org/wiki/Rotor_ship#Modern_vessels