Subsea Installation Engineering

Overview

Engineering support for subsea installation and MODU based offshore operations.

We provide subsea installation engineering and offshore support services to assist safe and efficient delivery of subsea scopes. Our teams support subsea installation activities from planning and engineering through to offshore execution support.

We combine subsea engineering with offshore experience to support complex installation activities, manage interfaces and reduce risk during offshore campaigns. Our engineers and technicians work closely with clients to ensure subsea systems can be handled, deployed and recovered safely offshore.

Our expertise

Execution focused engineering and offshore support for subsea installation activities.

Subsea installation engineering and planning

Engineering support for subsea installation activities, including installation methodology, sequencing and execution planning.
MODU based subsea support

Engineering and offshore support for subsea operations performed from MODUs, including deck layout optimisation, third party equipment interfacing and interface management.
Rig surveys and moon pool assessment

Survey and assessment of moon pool and deck areas on MODUs and self-installing platforms, including review of client data and 3D scanning where required, to support safe planning and execution of subsea operations.
SJDF and IWOCS handling and deployment

Planning and engineering support for SJDF and IWOCS operations, including deployment and recovery procedures, equipment interfaces and offshore execution support.
Xmas tree running

Engineering and offshore support for Xmas tree handling, deployment and running operations from MODUs, including deck procedures, lift plans and interface management with XT handling equipment.
Flowline and umbilical tie-in by drilling rig

Engineering support for flowline and umbilical tie-in operations performed using a drilling rig, including procedure development, equipment interfaces and offshore execution support.
Subsea construction support

Engineering and technical support for subsea construction activities, including procedure development, construction verification and offshore supervision during installation campaigns.
Subsea drilling templates and protective structures

Design and supply of subsea drilling templates to suit client requirements, supporting accurate well spacing and, where required, docking pile slot configurations to assist platform jacket installation. Delivered as a complete package from concept through detailed design, manufacture, FAT and load testing, to mobilisation and offshore installation supported by an in-house conductor analysis capability used to determine conductor tension plans for a given well.

Related Capabilities

Supporting services that strengthen subsea installation planning and offshore execution.

Our disciplines work together to deliver integrated, practical solutions aligned with offshore execution requirements. This structure helps us manage interfaces internally, reduce reliance on third parties and maintain technical continuity from early definition through to execution readiness.

Learn more about Engineering Disciplines

We deliver practical, fit-for-purpose solutions across feasibility, concept, FEED and detailed design. Our engineering is aligned with installation methods, construction sequencing and offshore constraints so designs can be delivered safely and efficiently.

Learn more about Engineering & Design Phases

We manage technical, operational and delivery interfaces. By coordinating interfaces across engineering disciplines, vendors, contractors and offshore execution teams, we help keep design intent and delivery requirements aligned.

Learn more about Interface Engineering & Integration

ICON maintains a dedicated in-house project management capability that supports offshore and onshore energy projects from early definition through to execution and close-out.

Learn more about Project Management

ICON provides risk studies and structured risk assessment capability to support informed decision-making and safe delivery across project lifecycles.

Learn more about Risk Studies

Our commercial studies are developed alongside engineering and execution planning, so cost, schedule and risk assessments reflect practical delivery realities rather than theoretical assumptions.

Learn more about Commercial Studies

FAQs

Answers to key questions on our safe, efficient offshore services.

It includes installation methodology, sequencing, execution planning and offshore support for handling, deploying, connecting and recovering subsea systems safely.

Yes. We support MODU-based subsea operations, including deck layout optimisation, interface management and planning for subsea equipment handling.

Yes. We support planning and engineering for SJDF and IWOCS deployment and recovery, including equipment interfaces, procedures and offshore execution support.

Yes. We can review moon pool and deck arrangements, assess client data and support rig surveys or 3D scanning where required to improve offshore readiness.

Yes. We design and supply subsea drilling templates tailored to client requirements, including well spacing and docking pile slot configurations, delivered end-to-end from concept through to offshore installation.

Unlock your offshore potential with our comprehensive engineering and project management services.

Our offshore services are designed to meet the unique challenges of the industry. We provide reliable, efficient, and innovative solutions that ensure project success.

What project is keeping you up at night?

Subsea Installation Engineering

Engineering support for subsea installation and MODU based offshore operations.

Execution focused engineering and offshore support for subsea installation activities.