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Mitsui O.S.K. Lines Relocates Head Office to Tekko Building in Marunouchi

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Mitsui O.S.K. Lines Relocates Head Office to Tekko Building in Marunouchi

Mitsui O.S.K. Lines Relocates Head Office to Tekko Building in Marunouchi

Mitsui O.S.K. Lines will relocate its head office to the Tekko Building in Marunouchi 1-chome, Chiyoda Ward, Tokyo. The move will be from its current head office location at the Nihonbashi Maruzen Tokyu Building in Nihonbashi, Chuo Ward, Tokyo. The effective date will be determined at a board of directors meeting to be held by the time of the company’s annual general shareholders’ meeting scheduled for March 2027.

The Tekko Building, completed in October 2015, is a large-scale mixed-use complex. The main tower rises 26 stories above grade and offers a Gross Floor Area of approximately 35,686 tsubo (approx. 1,179,000 sq. ft.). The property features high-specification office space with 2,950 mm ceiling heights and typical floor plates of approximately 723 tsubo (approx. 23,900 sq. ft.). It is recognized as Japan’s first large-scale mixed-use development powered entirely by renewable energy-sourced electricity, reflecting an environmentally conscious building operation. In addition to its prime location a one-minute walk from JR Tokyo Station, the building incorporates a mid-story seismic isolation system as part of its business continuity planning (BCP) measures.

The company cited workstyle reform and the promotion of innovation as key objectives of the relocation. Mitsui O.S.K. Lines, listed on the Tokyo Stock Exchange Prime Market, is principally engaged in the design, construction and leasing of floating production, storage and offloading systems (FPSOs) and operates globally in the offshore energy development sector.

Key Facts

  • Business Operator: Mitsui O.S.K. Lines, Ltd.

  • Relocation Timing: To be determined at a board of directors meeting to be held by the annual general shareholders’ meeting scheduled for March 2027

  • Current Location: Nihonbashi Maruzen Tokyu Building (2-3-10 Nihonbashi, Chuo Ward, Tokyo)

  • New Location: Tekko Building (1-8-2 Marunouchi, Chiyoda Ward, Tokyo)

  • Completion: October 2015

  • Number of Floors: Main Tower 26F / B3; South Tower 20F / B3

  • Gross Floor Area: Approximately 35,686 tsubo (approx. 1,179,000 sq. ft.)

  • Typical Floor Plate: Approximately 723 tsubo (approx. 23,900 sq. ft.)

  • Ceiling Height: 2,950 mm

  • Elevators: 17 passenger elevators; 2 emergency elevators; 2 low-rise elevators

  • Nearest Station: 1-minute walk from JR Tokyo Station