Vertical Lay System Integration

Installing a Vertical Lay System is more than fitting new equipment. It transforms the vessel's structural load path, operating profile and certification requirements.

Download our engineering guide to understand how an integrated EPC approach helps operators plan, engineer and deliver VLS installations with greater technical confidence and reduced project risk.

A successful VLS integration depends on far more than the lay tower itself.

Dynamic positioning capability, moonpool geometry, structural reinforcement, hull girder performance, OEM interfaces and class approval all influence whether a project is delivered on time and performs safely offshore.

This guide explains how these engineering disciplines work together within a single, coordinated delivery framework.

An engineering-first approach to VLS integration

Every vessel presents a different engineering challenge.

Whether integrating a Vertical Lay System onto a PSV, MPSV or construction support vessel, GLO Marine develops a project-specific engineering solution that considers:

  • Vessel capability and suitability
  • Moonpool and firing-line configuration
  • Structural and fatigue assessment
  • Hull girder strength
  • OEM coordination
  • Class approval strategy
  • Installation and commissioning support

By resolving these requirements early, projects progress with fewer engineering changes, reduced installation delays and a clearer certification pathway.

Download the VLS Engineering Guide

Discover the engineering principles behind successful Vertical Lay System integrations.

Inside the guide you'll find:

• A structured EPC engineering workflow
• Vessel suitability and feasibility assessment
• Structural engineering and load case methodology
• OEM integration and procurement guidance
• Certification and marine warranty considerations

Complete the form to receive your copy.
Download Guide
Inside the Guide

Evaluate vessel readiness

Understand how DP capability, moonpool geometry and vessel configuration influence VLS feasibility.

Engineer the complete load path

Learn how structural analysis, fatigue assessment and hull girder verification support safe offshore operations.

Coordinate systems integration

See how OEM equipment, onboard systems and certification requirements are managed through one engineering scope.

Deliver with confidence

Explore an engineering process that supports efficient installation, predictable schedules and successful offshore campaigns.

A practical engineering resource for VLS projects


Vertical Lay System integration brings together structural engineering, marine operations, dynamic positioning and equipment integration within a single project.

Rather than treating each discipline independently, the guide demonstrates how a coordinated EPC engineering approach reduces technical uncertainty throughout the project lifecycle—from concept development through commissioning.

Topics include:

  • Vessel suitability assessment
  • DP capability verification
  • Moonpool and firing-line engineering
  • Structural FEM and fatigue analysis
  • Load case development
  • OEM coordination
  • Class approval and marine warranty
  • Installation and commissioning

Supporting offshore vessel upgrades from concept to commissioning

VLS integration is one element of a wider offshore vessel modification programme.

GLO Marine supports owners, operators and offshore contractors with engineering, procurement support, installation supervision, commissioning and certification across complex offshore retrofit and conversion projects.

Explore our Offshore Vessel Mobilisation & Systems Integration services to see how we deliver complete EPC engineering for offshore assets.


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