canceled in 2020. The Japanese government decided to build the ship in December of the same year, but the details of its performance, such as what kind of equipment it will be equipped with, were to be discussed later. The multihull proposal originally attracted attention when the Japan Maritime Self-Defense Force (JMSDF) released a document on the design of Aegis system-equipped ships on April 9, which included the requirement to have “experience in the design and manufacture of modern multihulls”. The only Japanese shipbuilder with such experience is Mitsui E&S, which built JMSDF’s Hibiki-class ocean surveillance ships, and which will be integrated into Mitsubishi Heavy Industries.