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Floating Wind Foundation Blocks

Renewables · Wind

Floating Wind Foundation Blocks

The steel of a floating wind foundation, fabricated as blocks for assembly at a yard: columns, pontoons, braces, heave plates and outfitting. We have not built one yet; we are equipped to.

Explore the 3D model Send us a drawing

Allmarc 3D model · to scale

Built to your size

Column size, spacing and draught follow your design.

We have not delivered this product yet. We are equipped to build it: a 30 m bay with 11.5 m under the hook, plate rolling to 40 mm and welding to EN ISO 3834-3. The model shows a typical arrangement.

Not yet built: status
To your design: made
Blocks for yard assembly: supplied as
EN ISO 3834-3: welding

Explore the model

How it is built.

Scroll: the camera moves to each part in turn and ends on the exploded view. Drag to turn it round yourself.

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A foundation that floats

In deep water a turbine stands on a floating foundation held by mooring lines. It is assembled at a quayside from large steel blocks. Fabricating those blocks is our part.

Scroll to see how it is built · drag to turn it round

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Columns

Each column is a stack of cans rolled from plate and welded on the submerged-arc line, with ring stiffeners inside.

How is it possible at Allmarc?

Three-roll pinch cum pyramid plate rolls in the Allmarc works

Used here for: Columns

Rolls plate up to 40 mm

All our machinery

Used here for: Columns

Full-penetration welds on built-up sections

All our machinery

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Pontoons

Stiffened box pontoons tie the feet of the columns together. Panels are cut on the laser and welded with stiffeners before they are closed.

How is it possible at Allmarc?

Used here for: Pontoons

In 2024 we were the only buyer of Deratech’s 20 kW, 12 m laser.

20 kW
12 x 3 m bed
Pallet changer

All our machinery

Used here for: Pontoons

Tapered rafters and other non-uniform built-up sections, welded faster and with deeper penetration.

40 m, state of the art
No programming: weld lines taken from the 3D model
Tandem torch: two wires at once

All our machinery

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Braces

Tubular braces carry the tower load out to the 3 columns. Their ends are profile-cut to fit the column.

How is it possible at Allmarc?

Used here for: Braces

Tube, beam and structural profile cutting

All our machinery

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Heave plates

A stiffened plate under each column damps the up and down motion of the platform in waves.

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Tower flange

The centre column ends in a bolted flange for the turbine tower, drilled to the tower maker’s pattern.

How is it possible at Allmarc?

Used here for: Tower flange

CNC plate drilling

All our machinery

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Mooring foundations and access

Each column carries the foundations for its mooring line, a platform with handrails and a caged ladder.

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Made to your design

Send the general arrangement or a sketch with sizes and loads. We detail it, fabricate it, trial-assemble it in our bay and pack it for sea. The model is a typical arrangement, not a delivered project.

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