Unveiling Mirai II: Japan’s New Frontier in Arctic Exploration

Image Credits: JAMSTEC

On March 19, 2025, Japan unveiled its newest Arctic research vessel, Mirai II, during a lively ceremony at the Isogo Plant of Japan Marine United Corporation (JMU) in Yokohama. The event was made even more special with the attendance of Her Imperial Highness Princess Aiko.

This cutting-edge ship is being built for the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) and will succeed the original Mirai in conducting vital research. The name “Mirai II” emerged from a public naming contest, reflecting both community involvement and expert consultation.The “II” signifies not just continuity but also enhanced icebreaking capabilities and its role as a global research hub.

During the launch festivities, vice-Minister Nonaka Atsushi officially named the vessel on behalf of Minister Abe Toshiko.Following this announcement, Princess Aiko performed a ceremonial rope-cutting that marked Mirai II’s entry into water.Officials expressed their recognition for all who submitted name ideas from across Japan. They emphasized that Mirai II aims to continue building on its predecessor’s legacy by advancing international scientific collaboration.Designed to thrive in frigid conditions, this new icebreaker boasts Polar Class 4 certification—allowing it to operate year-round in icy environments. It can slice through flat one-year ice up to 1.2 meters thick at speeds of 3 knots—ideal for arctic exploration.

Equipped with state-of-the-art instruments, Mirai II will delve into atmospheric studies as well as oceanic and weather pattern analysis. Its design incorporates advanced Japanese technology tailored for navigating both icy waters and open seas efficiently.

Measuring an notable 128 meters long and 23 meters wide with an 8-meter draft, this vessel has an international tonnage of about 13,000 tons. Powering it are three diesel generators producing around 5,600 kW each alongside a dual-fuel diesel generator generating approximately 2,600 kW.

The ship features electric propulsion systems complete with controllable pitch propellers