Exit to "Bis"

How did it all begin?.. On the calendar of the two-thousands, the heavy nuclear cruiser "Peter the Great", the Barents Sea, rendezvous with a British submarine in distress... And suddenly an anomaly, a breakthrough in the metrics of space-time and... At the other end, the South Atlantic, the year is 1982, on the map is the intact USSR, the Cold War and everything else. They, overcoming the military vicissitudes, came to the Union...
And three years later, the authorities in the Kremlin's offices decided, especially since the scientists managed to calculate the algorithms and conditions for the transition - to make a return visit, to those "some two thousand".
For scientists, this is undoubtedly a grand experiment.
For the political leadership, this is a mission - to establish contact, sending a special representative, with far-reaching military, political, and economic plans.
For the military... The Soviet Navy ensured the stability of the operation, for some reason and calculations allocating a whole warship for this purpose - the anti-submarine cruiser "Moscow".
If only they all knew...