a smaller crew complement to reflect the declining birthrate in Singapore, with increased levels of automation and remote monitoring systems. This has resulted in its combat information center, machinery control room, and bridge being co-located in a single location known as the integrated command center. Its modularity also allows the ship to deploy unmanned and mine-countermeasure systems or be reconfigured to support disaster-relief operations. The ships have been sent on overseas deployments. The last three ships of the class were commissioned in January 2020. The littoral mission vessels were formerly under 182 Squadron until June 2020 with the inauguration of the Maritime Security Command. The eight Independence-class littoral mission vessels now form the Second Flotilla of the RSN. Tank landing ships The tank landing ships are the largest class of ships in the RSN. They were designed and built locally by ST Marine to replace the old County-class tank landing ships (LST). Each ship is fitted with a well dock that can accommodate four landing craft and a flight deck that can accommodate two medium lift helicopters. While the RSN describes the Endurance class as LSTs, they lack the beaching capability traditionally associated with LSTs, and their well docks and flight decks qualify the Endurance class more as amphibious transport docks. The ships provide sea transportation for personnel and equipment for SAFs overseas training, as well as a training platform for RSN's midshipmen. RSS Endurance became the first RSN ship to circumnavigate the globe when it participated in the 2000 International Naval Review in New York City. The ships are also actively involved in humanitarian and disaster relief operations, notably in East Timor, the Persian Gulf, the tsunami-hit Indonesian province of Aceh and most recently, disappearance of Indonesia AirAsia Flight 8501. The four ships form the Third Flotilla of the RSN. Mine countermeasures vessels The RSN acquired mine countermeasure capabilities as early as 1975, when the USN's and were reactivated by the RSN's engineers and technicians in California. The Bluebird-class coastal minesweepers were commissioned as RSS Jupiter and RSS Mercury. These two ships were eventually replaced by the mine countermeasures vessels. The first ship, RSS Bedok, was built by Karlskronavarvet in Sweden based on the design. The remaining three ships were prefabricated in Sweden and transferred to Singapore for final assembly by ST Marine. The ships are constructed of glass reinforced plastic to maintain low magnetic and acoustic signatures, and