posted on Sep, 10 2017 @ 11:32 PM
The old Soviet Romeo class subs are basically improved copies of WW2 German U boats.
The german U boats had no problems crossing oceans.
Now for EMP if a 10 to 20 MT weapon went off over the center of the US it would have a footprint twice as long north and south as its wide.
It would hit in canada and mexico but not do major damage to non grid connected electronics on the east and west coast.
That means cars and trucks on both coast would likely run though some may need the computers rebooted by disconnecting one battery cable for 10
Because the US electrial grid is so inter-tied power will likely go out across the US.
Some power plants on both coast could survive if the disconnect from the grid before a high altitude MT weapon goes off. smaller weapons have smaller
since the norks do not have MT weapons nor the missles to launch them likely the EMP total destruction area would be smaller for non grid connected
electronics. if the US set up a grid disconnect system to open all inter-tie switches before a weapon went off this would help protect larger parts
of the US.
with both a grid disconnect system and a power plant disconnect system