Joint Mediterranean operations could expose weaknesses in Japanese force structure, ship designs, and night-fighting methods. British cooperation could help Japan develop radar, equip enough ships, and build the manufacturing capacity to sustain it. Japanese warships might also receive ASDIC for anti-submarine operations. American participation would let the US Navy gain experience alongside both fleets, while remaining outside would leave Britain and Japan learning together. German U-boats had historically reached the Mediterranean, so anti-submarine equipment would have a practical role there.
Notable Point · 2:53:12-2:54:42
Joint combat could improve Japanese radar and night fighting
British cooperation could improve Japanese radar production and night operations, while Japanese ships might receive ASDIC.