And they have been using the USS Jimmy Carter sub with the front huge cable splice bay for decades to compromise all undersea cables.

>>>The New York Times reported in 2005 that the USS Jimmy Carter, a highly advanced submarine that was the only one of its class built, had a capability to tap undersea cables. An Institute of Electrical and Electronics Engineers report speculated that a 45-foot extension added to the Jimmy Carter provided this capability by allowing engineers to bring the cable up into a floodable chamber to install a tap. But it is unlikely that the USS Jimmy Carter routinely taps cables since U.S. intelligence agencies can much more easily (and lawfully) obtain cable data through taps at above-ground cable landing stations.

https://www.lawfareblog.com/evaluating-russian-threat-unders...