 At the same time, the Gulf of Finland would need be cleared of maritime traffic within 50 kilometres, and of air traffic to the height of 10 kilometres, which is not possible.The use of the guns was given up early in the 1970s, when the electric equipment went into poor shape, and the gun was retired of possible war time use.The last theoretical use for the guns would have been to fire on the Seutula Airport, as it was then known, in case there was a need to protect it from invading troops.