Announcement of Construction of Cable-laying Vessel

Toyo Construction Co., Ltd. (President and Representative Director: Kyoji Takezawa) are pleased to
announce the decision to construct a new vessel for cable laying.

Offshore wind power generation, which is considered an effective means of Japan’s renewable energy
business, is expected to begin full-scale implementation in the oceanic region. Various work vessels
will be required for construction of offshore wind power generation facilities, and particularly, there
will be a very strong demand for self-propelled work vessels that handle the cable laying work,
partly because, in addition to the fixed-bottom and floating type, the submarine DC power transmission
connecting Honshu and Hokkaido promoted by the government is scheduled. Also, since the introduction of
floating offshore wind power generation is expected to progress, it is expected that there will be increasing
demand for suitable offshore work vessels.

For these reasons, we have decided to construct the nation’s largest self-propelled cable-laying vessel
to meet these demands.

We will construct the vessel taking into account the construction of floating offshore wind power
generation facilities, and by utilizing the cable-laying vessel in various fields, we will contribute to
the spread of offshore wind power generation.

 

 

【Intended use】

● Laying a submarine cable between an offshore wind power generation facility and an onshore substation

※ Overview of the submarine cable laying work

Laying a power cable loaded on the cable laying vessel along a planned route; connecting turbines to
each other and to the onshore terminus.

● Various offshore works such as foundation pile works for fixed-bottom and floating type

 

【Features】

● 120m long and 27m wide; large deck area of approx. 2,500m2 which enables the arrangement of equipment
necessary for cable-laying and offshore construction.

● Self-propelled vessel equipped with a propulsion device enabling self-navigation in the oceanic region.

● Equipped with a dynamic positioning system equivalent to the DPS Class-2* required for offshore wind
power in Europe.

● Equipped with accommodation facilities for a large number of crew members and passengers, enabling
long-term offshore work.

● Mounted with a 250t crane with active heave compensation that can handle large water depths.

DPS Class-2*: A redundant system that does not lose positioning capabilities even if the main
equipment fails.

 

【Schedule】FY 2022: Design, FY 2023: Commencement of construction, FY 2025: Completion & Delivery