The fastest Japanese ship during World War II was the IJN Shinano, an aircraft carrier, but in terms of actual speed, the title often goes to the Japanese light cruiser Agano or the battleship Yamato, depending on the type of ship and the context in which speed is measured.
Here's a breakdown of these vessels:
1. IJN Shinano (Aircraft Carrier)
Speed: 27 knots (about 31 mph or 50 km/h)
The Shinano was an aircraft carrier and one of the largest of its class, originally designed as a battleship. It had impressive speed for a ship of its size, especially for a carrier, which was capable of reaching 27 knots. Although the Shinano was sunk early in its service, it was one of the fastest ships in the Japanese fleet, particularly for its type.
2. IJN Agano (Light Cruiser)
Speed: 35 knots (about 40 mph or 64 km/h)
The Agano, a light cruiser, was among the fastest ships of the Imperial Japanese Navy. It was designed with speed in mind, and its light displacement allowed it to achieve a top speed of 35 knots, making it one of the fastest warships in the fleet. The Agano was primarily used for reconnaissance and convoy escort duties.
3. IJN Yamato (Battleship)
Speed: 27 knots (about 31 mph or 50 km/h)
The Yamato was the largest battleship ever built, and while it wasn't designed with speed as a priority, it was still capable of reaching 27 knots. This speed was considered impressive for such a massive ship, but it was still slower than lighter, more agile cruisers and destroyers. The Yamato was more focused on firepower and armor than speed.