Saw this first from Yahoo.
The RN has released some info and pictures of concepts of the Nautilus 100 program. An exploration of what sub-surface systems might be employed 50 years from now.
The program was named Nautilus 100 to mark the 100th anniversary of the launching of USS Nautilus SSN-571.
https://www.royalnavy.mod.uk/news-and-l ... utilus-100
That mothership reminds of the FS-1 parasite sub of USS Seaview.
(BTW, is the USS Seaview anywhere on SB?)