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2025/9/24 : GUINNESS WORLD RECORDS™ Certificate Awarded for "Deepest scientific ocean drilling"

On September 24, 2025, the 7,906-meter drilling depth achieved during the IODP JTRACK project was officially certified by Guinness World...

Sep 24

2025/9/22 : Press Release Information

【Press Release Information】This application to Guinness World Records was made to demonstrate the high level of technical skill, a result...

Sep 22

2025/9/22 :【Press Release】Guinness World Records certified for "Deepest scientific ocean drilling"

【Announcement】 The award ceremony for the GUINNESS WORLD RECORDS™ certificate is scheduled to take place at the Japan Agency for...

Sep 22

2025/7/1 : Our shareholders , organization chart, and executive information have been updated.

Jul 1

2025/6/20 : Our company profile and executive information have been updated.

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Jun 20

2024/09/21 : Chikyu's marine scientific drilling depth reaches a world record of 7,877.5 metres at IODP Exp.405 JTRACK,

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Dec 19, 2024

We have begun renovating our corporate website, and some pages have been released in advance.

English page is currently under construction.

Dec 19, 2024

MANTLE QUEST JAPAN

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Sumitomo Fudosan Tokyo Mita South Tower 18F 3-5-27 Mita, Minato-ku,Tokyo 108-6318, JAPAN

Tel 03-6371-5900
Fax 03-4316-5517

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