乌克兰“首次”用无人潜航器击伤俄潜艇

Core Viewpoint - Ukraine's National Security Bureau reported the first successful strike on a Russian 636.3-class submarine using an unmanned underwater vehicle, resulting in an explosion and loss of operational capability for the submarine [1]. Group 1: Military Operations - The operation involved a joint special forces action by Ukraine's National Security Bureau and Navy against the Russian submarine docked at Novorossiysk port [1]. - The unmanned underwater vehicle, referred to as "Sea Baby," successfully targeted the submarine, which is capable of launching "Kalibr" cruise missiles against Ukraine [1]. - The submarine was forced to dock at Novorossiysk due to previous successful operations by Ukraine's "Sea Baby" unmanned surface vessel [1]. Group 2: Submarine Specifications - The 636.3-class diesel-electric submarine is an improved third-generation Kilo-class submarine, measuring 73.8 meters in length and 9.9 meters in width [2]. - It has a maximum speed of 20 knots, a maximum diving depth of 300 meters, and an endurance of 45 days, with a crew capacity of 52 personnel and a submerged displacement of 4,000 tons [2]. - The combat capabilities of this submarine model have significantly improved compared to earlier versions [2]. Group 3: Strategic Importance - Novorossiysk port is located on the eastern coast of the Black Sea in the Krasnodar Krai region of Russia and serves as a critical logistics supply facility for Russian operations in the Black Sea [3].