28 Red October: not sure if real news given today’s date, but this is same caterpillar drive as in Hunt for Red October (www.navalnews.com) posted 261 days ago by Based_in_Space 261 days ago by Based_in_Space +28 / -0 U.S. Navy Submarine First In World Fitted With Silent Caterpillar Drive - Naval News Submarines use stealth to dominate the seas, presenting an illusive yet deadly threat. Now U.S. Navy submarines will take stealth to a new level. American submarines will now be fitted with magnetohydrodynamic drive. 10 comments share 10 comments share save hide report block hide replies
MHD is actually old technology. I first read mention of it back in the Sixties.
At that time, its only drawback was that it worked in saline (sea) water, but not so well in fresh water. But I guess that's no serious problem for an oceangoing sub.