Wind turbine installation vessel

A wind turbine installation vessel (WTIV) is a vessel specifically designed for the installation of offshore wind turbines. There are 16 vessels in 2020.[1]

TIV MPI Resolution

Similar to a jackup rig it is self-elevating. To enable quick relocation in the wind farm it is self-propelled. It also has a slender ship shaped hull[2] to achieve a quick turnaround time with the vessel carrying several foundations or wind turbines each time.[3] Azimuth thrusters are used to position the vessel during jack-up operations.[3] Some may carry 5 modern wind turbines, and lift 700 tonnes 125 meters above deck.[4][5] A vessel can cost $335 million, or $220,000 per day. The fleet of 16 vessels are scheduled to expand to 23 vessels by 2023, of which 7 can handle the largest turbines.[6][1] Projects include lift capacity of 1,600 tonnes, and a 155 meter crane height.[7] In China, lack of suitable vessels are slowing the construction of offshore wind farms.[8] Construction of the four-legged US Jones Act-compliant Charybdis started at Keppel in Texas in late 2020, at a cost of a half billion dollars.[9]

References
  1. "Havmølleproducent: Vi mangler installationsskibe nu". Søfart (in Danish). 26 August 2020. Archived from the original on 26 August 2020.
  2. DNV installation vessel design software
  3. Pacific Orca Wind Farm Installation Vessel
  4. "Pacific Osprey's new upgraded crane boom is on its way to Denmark for installation". www.windtech-international.com. 2020.
  5. Snyder, John (11 March 2020). "New class of installation vessels to handle 'super-sized' wind turbines". Riviera Maritime Media.
  6. Dixon, Gary (25 August 2020). "Offshore wind players losing out on deals due to lack of ships | TradeWinds". TradeWinds | Latest shipping and maritime news.
  7. "Swire Blue Ocean to upgrade two turbine installation vessels and build new one". Riviera. Retrieved 17 September 2020.
  8. "Too few and too small: the vessel crunch hobbling China's offshore wind dash | Recharge". Recharge | Latest renewable energy news. 15 September 2020.
  9. "Keel laid for first Jones Act-compliant turbine installation vessel". www.offshore-mag.com. 17 December 2020. Archived from the original on 17 December 2020. Keppel AmFELS shipyard in Brownsville, Texas. This will be the first Jones Act-compliant offshore wind turbine installation vessel. Its hull and infrastructure will use more than 14,000 tons of domestic steel. crane .. boom length of 426 ft (130 m) and lifting capacity of 2,200 tons.
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