Sevastopol, sometimes written Sebastopol, is the largest city in Crimea and a major port on the Black Sea. Due to its strategic location and the navigability of the city's harbours, Sevastopol has been an important port and naval base throughout its history. Since the city's founding in 1783 it has been a major base for Russia's Black Sea Fleet, and it was previously a closed city during the Cold War. The total administrative area is 864 square kilometres (334 sq mi) and includes a significant amount of rural land. The urban population, largely concentrated around Sevastopol Bay, is 479,394, and the total population is 547,820.
Naval warfare is combat in and on the sea, the ocean, or any other battlespace involving a major body of water such as a large lake or wide river. Battles have been fought on water for more than 3,000 years.
The Russian Navy is the naval arm of the Russian Armed Forces. It has existed in various forms since 1696; its present iteration was formed in January 1992 when it succeeded the Navy of the Commonwealth of Independent States.
The Russian Naval Infantry, often referred to as Russian Marines in the West, operate as the naval infantry of the Russian Navy. Established in 1705, they are capable of conducting amphibious operations as well as operating as more traditional light infantry.
The Soviet Navy was the naval warfare uniform service branch of the Soviet Armed Forces. Often referred to as the Red Fleet, the Soviet Navy made up a large part of the Soviet Union's strategic planning in the event of a conflict with the opposing superpower, the United States, during the Cold War (1945–1991). The Soviet Navy played a large role during the Cold War, either confronting the North Atlantic Treaty Organization in western Europe or power projection to maintain its sphere of influence in eastern Europe.
The Black Sea Fleet is the fleet of the Russian Navy in the Black Sea, the Sea of Azov and the Mediterranean Sea. The Black Sea Fleet, along with other Russian ground and air forces on the Crimean Peninsula, are subordinate to the Southern Military District of the Russian Armed Forces.
The Military Naval Forces of the Armed Forces of Ukraine is the maritime forces of Ukraine and one of the five branches of the Armed Forces of Ukraine.
The Baltic Fleet is the fleet of the Russian Navy in the Baltic Sea.
The Indonesian Navy is the naval branch of the Indonesian National Armed Forces. It was founded on 10 September 1945 and has a role to patrol Indonesia's lengthy coastline, to enforce and patrol the territorial waters and Exclusive Economic Zone (EEZ) of Indonesia, to protect Indonesia's maritime strategic interests, to protect the islands surrounding Indonesia, and to defend against seaborne threats.
The Russian commando frogmen, informally called "commando frogmen" in civilian media, are a Russian Naval Spetsnaz unit under operational subordination to the Main Intelligence Directorate (GRU). It is the special forces unit of the Russian Naval Infantry and is composed of highly trained and elite marines within the Naval Infantry. By virtue of belonging to the Russian Naval Infantry, frogmen fall under the Coastal Troops of the Russian Navy service arm. The Russian Navy proper does not field any special forces or special operations units. Russian FSB special forces Alpha Group and Vympel also have frogman units in their respective naval components.
The Zubr class, Soviet designation Project 1232.2, is a class of Soviet-designed air-cushioned landing craft (LCAC). The name "Zubr" is Russian for the European bison. This class of military hovercraft is, as of 2023 the world's largest hovercraft, with a standard full load displacement of 555 tons. The hovercraft was designed to sealift amphibious assault units from equipped/non-equipped vessels to non-equipped shores, as well as to transport and plant naval mines.
The Western Naval Command is one of the three command–level formations of the Indian Navy. It is headquartered in Mumbai, Maharashtra. As the senior–most of the three formations, the command is responsible for the all naval forces in the Arabian Sea and western parts of the Indian Ocean and the naval establishments on the west coast of India.
Yokosuka Naval District was the first of four main administrative districts of the pre-war Imperial Japanese Navy. Its territory included Tokyo Bay and the Pacific coasts of central and northern Honshū from the Kii Peninsula to Shimokita Peninsula. Its headquarters, along with most of its installations, including the Yokosuka Naval Arsenal, were located in the city of Yokosuka, which constituted the Yokosuka Naval Base.
Vinnytsia (U206) was an anti-submarine corvette of the Ukrainian Navy. Prior to joining the Ukrainian Navy she was a former KGB Border Guard patrol ship named Dnepr. In March 2014, she was seized by Russian soldiers and de facto came under control of the Russian Black Sea Fleet. The ship was returned to the Ukrainian Navy from Crimea on 19 April 2014.
Ochakov was a Kara-class cruiser of the Russian Navy Black Sea Fleet. She was decommissioned in 2011 but remained laid-up in Sevastopol, until on 3 March 2014 she was towed and sunk as a blockship in the channel to Donuzlav lake, in Novoozerne, in western Crimea. A few months later she was refloated and returned to Inkerman to await scrapping.
Southern Naval Base was a naval base of the Armed Forces of Ukraine located in the town of Novoozerne at the Donuzlav Bay in the western part of Crimea.
Azov Naval Base is the new naval base of the Armed Forces of Ukraine located in Berdiansk along the northern coast of the Azov Sea.
The Sevastopol Naval Base is a naval base located in Sevastopol, in the disputed Crimean Peninsula. The base is used by the Russian Navy, and it is the main base of the Black Sea Fleet.
Indonesian Fleet Command is a naval combat force of the Indonesian Navy (TNI-AL), it was formed and inaugurated by the Commander of the National Armed Forces Gen. Andika Perkasa on 21 January 2022. The Fleet Command consists of three fleets, namely: 1st Fleet Command located in Tanjungpinang, 2nd Fleet Command located in Surabaya and 3rd Fleet Command located in Sorong. The Indonesian Fleet Command Headquarters is located on Jl Gunung Sahari No. 67 Central Jakarta, Jakarta.
Saky is an air base adjacent to the settlement of Novofedorivka, Crimea. It was initially built by the Soviet Union in the 1930s, and has been operated under both Ukrainian and Russian sovereignty since 1992.
Ukraine 
Ukrainian Navy 