Nautilus Dynamics
Services

Structures & integrated design

Structural and mechanical engineering from concept and FEED through detailed design, fabrication drawings and construction follow-up. Our work connects offshore equipment and subsea systems with their geotechnical, piping and installation interfaces.

Concept & FEED · Structural analysis · Detailed design · Fabrication drawings

Fabricated offshore steel structure before delivery

From concept to detailed design

  • Concept layouts, structural arrangements and design-basis development.
  • FEED studies and definition of loads, interfaces and material requirements.
  • Detailed calculations, fabrication drawings and coordination with construction partners.

Structural analysis

  • Primary and secondary steel design, global and local finite element analysis (FEA).
  • Linear, non-linear and large-deformation analysis, buckling and contact checks.
  • Fatigue, hot-spot stress assessment and life extension studies.

Mechanical design

  • Equipment specification for winches, cranes, bearings and mooring hardware.
  • Installation, transport and lifting loads, with weld and bolting verification.
  • Seafastening and installation aid design.

Interfacing disciplines

  • Geotechnical interpretation, drag anchors, foundation and suction piles.
  • Piping stress, support verification and material specification.
  • Cathodic protection design, anode sizing and current distribution.

Fabrication support

  • 2D and 3D modelling and fabrication drawings.
  • Vendor inspection, yard support and fabrication follow-up.
  • Technical dossiers and quality verification.
Defined around your scope

Typical deliverables

  • Structural calculations and FEA reports
  • Fabrication drawings and technical dossiers
  • Equipment and material specifications
  • Yard and vendor follow-up
Our work, in detail

From the model
to fabricated steel.

Load paths and connection details are developed with fabrication and installation in view.

Finite element model of a fabricated offshore steel assembly
Structural model of an offshore steel assembly.
Yellow offshore steel assembly in a fabrication yard
Fabricated steel prepared in the yard.

Planning your engineering scope

Can structural design include fabrication drawings?

Yes. We connect load definition, global and local structural checks with 2D and 3D modelling, fabrication drawings, technical dossiers and yard follow-up.

What kinds of equipment can you assess?

Examples include installation aids, riser chutes, anchors, PLEMs, hull interfaces, modules, seafastening and lifting arrangements.

Related project experience

Work with Nautilus

Discuss your structures & integrated design scope.

Tell us about the engineering challenge, the location and your schedule. We’ll connect your enquiry with the right people.

Discuss your project