Russian Subs Can Now Fire Missiles While Still In Port

This is taken from  The National Interest   here.

Russian subs can now launch cruise missiles while docked in port
subs can fire weapons more quickly, without sailing into open water

ability to launch missiles while dockside makes surprise attack easier

dockside launch a demonstration of power of new Yasen-class nuclear  sub
Severodvinsk, massive, 14,000-ton, far more sophisticated 
seven Yasens are armed with Kalibrs, Onyx anti-ship missiles, torpedoes

Severodvinsk launched Kalibr missile while in port
Previously, launches moored to pier impossible
in this position a number of units and systems do not work
this technical problem has now been resolved

Northern Fleet successfully launched Kalibr cruise missiles without sailing to sea
a sub caught off guard, able to carry out its combat missions
future compulsory combat training of all subs crews with cruise missiles on board

portside-launch could be used by subs in Tartus, Syria

nuclear-capable Kalibr is subsonic land-attack cruise missile
basic model has range of 1,500 miles
Kalibr-M range of 3,000 miles