 Vladivostok, the end point of the Trans-Siberian railway, was the only Russian naval base on the Pacific Ocean, and the only well-equipped commercial port in the Far East.Thus the value of Vladivostok Fortress increased sharply, it now without help had to defend all possible actions of the enemy in the northern part of Peter the Great Gulf and to avoid the possibility of the enemy's capturing the port of Vladivostok to use as a base of operations and supply point.However, the state of defensive structures of the fortress was unsatisfactory.