China-based Tier 1 supplier to the offshore wind industry, ZTT, will put its flagship monopile installation vessel Zhongtian 39 , launched in October 2023, through an upgrade to prepare the vessel “to take on its next mission with unmatched capabilities” .
The upgrade will include the integration of a DP2 dynamic positioning system into the vessel which is currently equipped with DP1. ZTT will also add a helipad to Zhongtian 39 and expand the accommodation capacity to 210 people.
ZTT launched the self-propelled crane vessel on 29 October 2023. Zhongtian 39 , which measures 215 meters in length and 51.8 metres in breadth, has two main hooks: a full rotation 3,500-tonne hook and a fixed stern crane with a lifting capacity of 5,000 tonnes. This enables it to lift 3,200-tonne wind turbine foundations and 4,500-tonne substation topsides, according to the company.
The vessel is also fitted with a MENCK 3500kJ hydro pile hammer and has a deck that can accommodate one complete jacket structure or two monopiles, each with a diameter of 10 metres and a length of 120 metres, ZTT said in October 2023.
ZTT’s work in offshore wind outside China is predominantly focused on subsea cables through its subsidiary ZTT Submarine Cable & System, which just recently completed the installation and termination of the 155 kV submarine cable connecting the Gode Wind 3 offshore wind farm to the DolWin kappa offshore converter platform in Germany.
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