Naval landing forces of the JMSDF

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The three Osumi-class tank landing vessels give the JMSDF a modest lift capability, especially in defense of the outer islands. The “Osumi” type of vessel enables the efficient transport of ground troops to strategic locations, and the rescue of civilians in case of large scale natural disaster. The massive hull features armored and opening deck. The rear of hull houses an armored landing deck for two large CH-47 helicopters. The well-dock in the rear of the ship houses the two Landing Craft Air Cushion (LCAC) hovercraft. Forward, there is a 100m deck below the main deck, but the single elevator accessing these spaces is too small for anything but a small helicopter. A VSTOL aircraft or a larger helicopter will simply not fit on the elevator. These spaces below the forward main deck are used primarily for vehicle storage so those fighting and/or armored vehicles can access the well deck.

At least two members of the class, JDS Ōsumi (LST-4001) and JDS Kunisaki (LST-4003), participated in search & rescue and other disaster relief operations in the aftermath of the 2011 Tōhoku earthquake and tsunami.

In January 2014, The Japanese Ministry of Defence (MoD) has confirmed reports that it will perform a major refit on the Japan Maritime Self-Defense Force’s (JMSDF’s) Osumi-class tank landing ships (LST) to embark MV-22 Ospreys, and Assault Amphibious Vehicles (AAV7s) to improve their amphibious capabilities. The MoD allocated JPY20 million (USD190,000) in its fiscal year 2014 budget to conduct research on the refit.


▽Japan’s Maritime Self-Defense Force (JMSDF)


sphere The organization of the JMSDF



sphere The Regional District Forces



sphere Helicopter Destroyers DDH



sphere Guided Missile destroyers DDG



sphere Destroyers DD



sphere Tank Landing Ships LST



sphere Submarines SS



sphere Support and Auxiliary ships



sphere The aviation of the JMSDF



sphere Naval landing forces of the JMSDF



sphere Future projects of the JMSDF



sphere The strategy of the JMSDF



sphere News & manoeuvres


▽ Simulations & Wargames

▽ World War II: European Theater


sphere Unconditional Surrender



sphere The Supreme commander


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