Tour of Retired Antarctic Research Ship ‘Shirase 5002’ Details Its Adventures; Reality of Life on Board Revealed of Record-Holding Vessel

By Masanori Matsumoto / Yomiuri Shimbun Staff Writer

16:18 JST, August 26, 2025

FUNABASHI, Chiba — Against the backdrop of a blue sky, the majestic orange hull of the Shirase 5002 stands out. Its rounded bow is very different from the straight form of cruise ships, an instant indicator of its special mission. Even 17 years following its retirement, the ship retains the same dignity from when it was making many Antarctic research expeditions.

From 1983, the Shirase made 25 round trips between Japan and Showa Station in Antarctica over the course of 25 years. While in active service, it belonged to the Maritime Self-Defense Force. Its ownership was transferred to weather information company Weathernews Inc. in Chiba upon retirement in 2010. Since 2013, it has been owned by the WNI Kisho Bunka Sozo Center, a general incorporated foundation and affiliate of the company.

“Out of its 25 expeditions, the ship docked at Showa Station 24 times. It isn’t easy to reach the station due to the thick ice. This record is unmatched among research ships throughout history,” Shigeru Saigusa, 55, secretary general of the foundation, said proudly. Saigusa is a former Antarctic expedition and research team member.

Guided by Saigusa, I went to the bridge, where the ship was steered. The spacious area has a steering wheel similar to that of a car, and a lever to adjust the propeller’s rotation speed.

“The unique maneuvering technique called ‘charging,’ also ‘ramming,’ was also performed here,” said Saigusa. Charging is a navigation method to break through ice when the ship’s path is blocked by ice; the ship first withdraws, then moves forward to climb onto the ice and crush it to continue navigating. During one expedition, the ship performed charging as many as 4,000 times. Hearing this, I imagined how difficult and daunting it was to sail to Antarctica.

Next, we moved to the crew’s living quarters.

The Shirase carried about 170 MSDF officers tasked with navigation duties and about 60 research team members, including researchers and engineers.

First, we visited the room where MSDF officers held meetings and ate meals. In line with MSDF tradition, curry rice was served for lunch on Fridays. Traditional osechi New Year’s Day dishes were also served for the holiday. The chairs were designed to hook onto fixtures underneath the tables in order to withstand intense rocking.

The Shirase holds the record for being the MSDF’s ship with the most tilting capabilities: 53 degrees to the left and 41 degrees to the right. While its tapered, narrow bottom provided high icebreaking capability, the design also facilitated tilting.

“I took motion sickness medication, but it gradually stopped working,” Saigusa said.

On the same floor is the medical room, well-equipped with an operating table. It was mostly used for dental treatment. Operations for bone fractures and appendicitis were also performed.

Nearby is the barber shop. A sign at the entrance read “Tiger Cut House Shirase Main Store.”

Saigusa explained the origin of the shop’s bold name: “With no barber on board, the crew cut each other’s hair. We couldn’t do elaborate hairstyles, so buzz cuts were popular. They weren’t professional, so the hair ended up being unevenly cropped, looking like tiger stripes. That’s why it’s known as tiger cut.”

Hearing about the sense of humor alongside the harsh life on board, I felt closer to the expedition team.

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Shirase trivia

The ship was named after the Shirase Glacier, located southwest of Showa Station. The glacier itself was named after Lt. Nobu Shirase, the first Japanese national to explore Antarctica.

MSDF ships conducting oceanographic research have ship numbers in the 5000s, with only icebreakers having a single digit after 500. The number of “Fuji,” the immediate predecessor of Shirase, was 5001.

The Shirase was built as the third Antarctic research ship following the “Soya” and the “Fuji,” with the former having started the orange hull tradition.

Toward the end of each voyage, there would be a shortage of fresh vegetables. In response, bean sprouts and radish sprouts were grown on the Shirase.