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SEA INSTALLER

Errichtung Siemens Wind Power Windenergieanlage SWT 6.0 120 in Windfarm Gunfleet Sands III

 

We’ve built 1,000 turbines of experience into SEA INSTALLER

A2SEA’s second-generation wind turbine installation vessel, SEA INSTALLER, is the result of more than a decade of practical experience in the field of offshore wind turbine and foundation installation. It has been designed to operate in the more challenging conditions that encountered further offshore and in deeper water. A purpose-built vessel, the SEA INSTALLER is designed to transport and install up to eight 3.6MW turbines. And, with a reinforced deck as long as a football pitch, she’s made to carry large, heavy loads.

Forward thinking

This brand new vessel  is the ideal solution for the next generation of European offshore wind farms. SEA INSTALLER’s crane placement and free deck plan are ideally suited to turbine transport and installation. And it is capable of direct feed from component production facilities, eliminating the inefficiency of trans-shipment at local logistics harbours.

Four beats six

With her four legs, the SEA INSTALLER has less payload than a six-legged vessel, but a more feasible distribution over the entire deck area. The middle legs of six-legged vessels often get in the way, which can be a major problem when planning lifting operations. The four-leg configuration provides much better clearance and manoeuvrability for the vessel’s cranes. Instant manoeuvrability, a deck built to withstand massive loads, a crane that can slew 360 degrees, extend 100 metres and lift 900 tonnes, and a long list of other advantages make SEA INSTALLER a solution that’s hard to beat.

More than meets the eye

There’s more to SEA INSTALLER than meets the eye, however. For example, careful placement integrates the vessel’s plentiful accommodation without affecting the vessel’s primary purpose. And electric cranes minimise noise to protect both the external environment and ensure the best working conditions. Extra generators boost production uptime, providing fault tolerance to ensure 24/7 use of the vessel.

SEA INSTALLER can operate in water that’s 60m deep or more, load up to nine turbines at a time and carry out installations in a wider array of weather conditions.

Not only can SEA INSTALLER be able to carry more turbines at a time, she can also sail quickly back to harbour and reload – an essential capability when wind farms are located so far out at sea.

The new vessel includes two features that will make operations safer and more efficient. The first is Dynamic Positioning (DP2), which uses GPS navigation and laser to keep the vessel in position during installation. The second innovation is the position of the crane. Instead of standing in the middle of the deck, it is wrapped around one of the vessel’s four jack-up legs, providing less obstruction. And, positioned close to the edge of the vessel, the crane has a much greater reach.

Instant reaction

Equipped with a DP2-class type dynamic positioning system and a Voith Schneider propulsion system, the SEA INSTALLER can change direction in an instant. Much faster than conventional systems with one shaft and a rudder, the SEA INSTALLER’s Voith Schneider propellers and propulsion system make the vessel very stable and manoeuvrable, even under extreme conditions with high currents and wind speeds. Thanks to improved stability and better use of deck space, SEA INSTALLER can carry out installations even in harsh winter weather.

SEA INSTALLER takes the installation process to a more efficient and cost-effective level, giving developers greater confidence that their projects will be delivered on time and with maximum profitability.

Download brochure on SEA INSTALLER

Download technical brochure on SEA INSTALLER

 

Tech Specs


General

Vessel: SEA INSTALLER

Type of vessel: Self-propelled jack-up vessel

DP2: at client’s request

Classification: DNV

Flag: Danish

 

Dimensions

Length: 132 m

Breadth: 39 m

Draft: 5.3 m

Leg length: 83 m

Deck load: 15 t/m²

Free deck space: 3350 m² (subject to deck layout)

Total net deck load: 5000 t (depending on stability)

Service speed: 12 kn Max

Operating water depth: 6.5–60 m (depending on tide, penetration)

 

Jack-leg System

Number of legs: 4

Jacking system: Double Hydraulic System

Jacking speed: 0.50 m/min

Spudcan footprint: 105 m²

Wave limit jacking: 2.0 m Hs (subject to site specific assessment)

 

Main Crane

Type: Gusto GLC-800-ED

Main boom length: 94 m

Max crane capacity: 800 t @ 24 m outreach (600 t @ 30m) (optional up to 900 t subject to boom configuration)

 

Cargo Crane

Type: Marine cranes

Number of cranes: 5

Main boom length: 25 m

Max crane capacity: 20 t

 

Tank Capacity

Fuel: 1000 m³

Fresh water: 450 m³

Sewage tanks: 300 m³

 

Power Sources

Main engines: 6 x 3020 kW

Power supply: 6.6 kV, 440V, 220V, 110V, 50 Hz

 

Client’s Accommodation

Personnel: 35 persons

Cabins: 35 single cabins

Offices: 2 with 6 workstations

Other (shared with vessel crew): Rest lounge, Mess room, Gym facilities

 

schematics-seaInstaller

Download technical specifications for SEA INSTALLER

 

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