Russia plans on building a new gigantic submarine.
"A gigantic new research submarine designed by Russia will travel underneath ice floes, mapping its underwater surroundings with a pair of huge plane-like wings. The sub will help Moscow exploit its Arctic frontier as it prepares to harvest previously untouchable natural resources."
Probably then also great for tapping underwater cables (Operation Ivy Bells)
http://www.popularmechanics.com/science/energy/a26612/russias-planned-scientific-research-submarine-is-enormous/ [popularmechanics.com]
https://en.wikipedia.org/wiki/Operation_Ivy_Bells [wikipedia.org]