The 23rd Marine Guard Detachment (MUN 1472) is a military unit of the Ukrainian Sea Guard of the State Border Service of Ukraine. The detachment guarded and patrolled the maritime border in the Sea of Azov, in a section of 154.7 nautical miles and the Kerch Strait, in a section of 30.4 miles, within Donetsk, Zaporizhia and Kherson oblasts. But following the fall of Mariupol, it was relocated to Bilhorod-Dnistrovskyi.