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Offshoretronic has a new ADD-ON Installation Support Tower Concept

By: Tom Russell 20/10/2020 Offshoretronic

General Vessels

Offshoretronic has developed a new add-on installation support tower concept to be installed as an addition to its dual crane offshore wind installation vessel. With this transportation and installation method, it claims it can provide large cost savings by utilising the same monohull crane vessel for the installation of all kinds of offshore wind foundations and for the transport and installation of wind turbines as one single unit.

This concept is designed to allow Offshoretronic to transport and install two completely finished wind turbines of up to 11 MW capacity in one single round trip, which it claims could result in cost savings of around 40% in operational time and around 15% in fuel consumption compared to large jack-up vessels. For larger turbines, Offshoretronic can install the turbine tower together with the nacelle as one single unit, whilst the turbine blades could be installed with a smaller size Jack-up vessel in assistance mode. The ADD-ON Installation Support Tower is fully modular and can be installed and removed by the Vessels own Heavy Lift Mast Cranes.

To allow for smaller and lighter support tower construction, the turbine's full weight is supported on the lower support beam and by the crane boom wires. This arrangement will give additional load stability and support to the support tower. The lifting and lowering of the wind turbine will be done by the mast crane main winches, with a lifting and heave compensation capacity of 1,200 MT.

The turbine tower will be resting and secured on a support beam during transportation and both top and bottom grippers will have two additional secondary retentions around the Turbine Tower. This is designed to give extra support and support safe transportation and installation process of the turbine.

"In the coming years Offshore Wind end-users are expected to go mainly for larger Wind turbines in the range of 12-15 MW," said Project Director Jeroen Berkhout. Jeroen continued: ’’However industry researchers and analysts predict that over the next decade still smaller size turbines in the range of 9-11 MW turbines will be produced and installed, particularly in more remote areas for logistical reasons and areas that would face hurricane wind gusts and require smaller size reinforced, hurricane proof turbines. Hence we foresee still a good market for our new Concept particular in combination with our unique Dual Crane heavy lift installation vessel."

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Offshoretronic has a new ADD-ON Installation Support Tower Concept

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