apan’s first Taigei Class ‘Big Whale’ diesel electric attack submarine is expected to enter service in 2021, after the first ship of the class was launched on October 14th 2020. The new warship developed by Mitsubishi Heavy Industries represents the cumulation of over a decade of research and development efforts, and like many new classes of Japanese ship it has pioneered a number of entirely new technologies. The warship’s most notable feature is its use of lithium-ion batteries in its propulsion system - the first in the world to be designed with this feature. Japan’s older Soryu Class ships are currently the only operational submarines in the world with propulsion systems that use lithium-ion batteries, but unlike the Taigei these were added to the design later as an upgrade rather than being designed as an integral feature of the original ships. Lithium-ion cells reportedly provide increased endurance at high speeds, and allow submarines to charge faster while also extending battery life relative to lead-acid batteries. They are also less bulky and require less maintenance, meaning they are likely to be an attractive option for a number of navies in coming years.

在2020年10月14日下水该级别的第一艘船之后,日本的第一艘“大鲸”级柴油电动攻击潜艇预计将于2021年服役。三菱重工开发的新军舰代表了其近十年来研发方面的努力累积的成果,与许多日本新型舰船一样,它使用了许多全新技术。军舰最引人关注的功能是在推进系统中使用锂离子电池,这是世界上第一个设计使用此功能的设备。日本的老式苍龙级舰船目前是世界上仅有的使用锂离子动力推进系统运行的潜艇,但与大鲸号不同的是,这些设备是后来被添加到潜艇中是作为升级而不是作为原始舰船的整体而设计的。 。据报道,锂离子电池可提供更高的高速续航力,并可使潜艇更快地充电,相对于铅酸电池的电池拥有更长的寿命。 它们的体积也较小,需要的维护也较少,这意味着它们可能在未来几年成为许多海军极具吸引力的选择。