The veteran submarine CNSS Tinfish, the only surviving submarine from the old HCSN, has begun a final refit and upgrade ahead of its final role as a trials submarine from 2114-2120 when it will retire for the second time. As before it will go to a museum, presumably for good this time. When Tinfish returns from its upgrade it is thought it will help develop a new generation of cruise missile.
The HCSN have also put their Walrus SSBNs back until 2117 because of delays completing the design. The ships are scaled up versions of the Sealion nuclear attack boats, the first of which is currently in final construction. Experience gained during the construction of CNSS Sealion has meant the Walrus design will be amended, the final 2 of 4 Sealions are also likely to see changes.
