Harwich could accelerate Japanese destroyer experience

An attachment to the Harwich Force would turn fleet reinforcement into institutional learning. The force regularly skirmishes with German units, so Japanese destroyer crews sent there would accumulate modern combat experience far faster than ships retained for local defence. Its aggressive operating culture later helped shape the Royal Navy's Tribal-class destroyers, and the exchange could influence Japanese destroyer thinking long after the deployment. Coalition service would transfer doctrine and operating habits while also increasing the number of available hulls.