Floating Wind Foundation Blocks

01 / 09

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

02 / 09

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 rollsRolls plate up to 40 mm

Used here for: Columns

• Rolls plate up to 40 mm

All our machinery

Submerged-arc (SAW) welding lineFull-penetration welds on built-up sections

Used here for: Columns

• Full-penetration welds on built-up sections

All our machinery

03 / 09

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.

04 / 09

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?

CNC profile laserTube, beam and structural profile cutting

Used here for: Braces

• Tube, beam and structural profile cutting

All our machinery

05 / 09

Heave plates

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

06 / 09

Tower flange

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

07 / 09

Mooring foundations and access

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

08 / 09

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.

09 / 09

Every part, apart

Columns, pontoons, braces, heave plates and outfitting.