Maritime Operations & Subsea Installation

Trusted Worldwide for Complex Marine Operations and Offshore Mooring

Years of Experience

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Projects in Various Fields

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Companies Partnered Up With

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Focused Leadership When It Matters Most

01

Marine Operations Supervision & Execution

End-to-end planning and operational oversight of offshore marine campaigns, including anchor handling, pre-lay mooring, riser pull-ins, and towing operations across deepwater and harsh environments.

02

FPSO Hook-Up & Disconnection Management

Expertise in FPSO and floating terminal hook-up, disconnection, and station-keeping operations, supporting both commissioning and decommissioning phases with a strong focus on safety and schedule adherence.

03

Mooring & Subsea Installation

Technical advisory and on-site coordination for suction pile installation, torpedo anchor deployment, FPSO mooring spread layout, and subsea equipment handling — with experience across oil & gas, LNG, and renewables.

04

Offshore Project Support & Marine Coordination

Providing clients with trusted marine representation and coordination for vessel spread management, offshore readiness reviews, deck planning, and project-specific risk mitigation.

Challenging Waters, Trusted Results

Subsea 7 / Petrobras

Petrobras Mero 3

Pre-lay of mooring lines at Mero 3 field – Offshore Brasil – Mero development. Advisor for all operations, training of personnel. Assisting on future S7 projects.

DOF Subsea

Egina FPSO & OLT Hookup

Egina FPSO and OLT hook up – Mooring lines of 147 and 150mm chain \ Spiral Strand wire 140mm – Suction anchors.

Sevan Marine ASA

Sevan Hummingbird

Repair of broken mooring line at Hummingbird. Planning, development of procedures and task plans, equipment and offshore for the execution of the operation. Vessel Far Sapphire.

Altera Infrastructure / Teekay Group

Voyageur Spirit and Banff decommissioning

De-Commissioning FPSO Banff. – Pre-Lay temporary mooringsystem in Kishorn – Heading Control during FPSO disconnect – Tow to Kishorn Hook-Up to mooring system in Kishorn.

Reach Subsea / Core Marine

Baleine 1 – FPSO Firenze

Package Lead for recovery and hook up of mooring lines including bowstring stretching and tensioning. Planning and preparing methods, procedures, and task plans for the operation. Assisting all procedures, etc of the project. Client Saipem. Planning work from Norway.

CoreMarine / ECOS / OLT

FSRU Toscana emergency disconnect

Preparations procedures, methods, personnel for the emergency disconnect of ECOS`s FSRU Toscana off Livorno coast of Italy. Risers and umbilical disconnection and lay.

A selection of our valued clients

Commitment to HSE & Client-Focused Approach

Iversen Marine leads with a strong HSE focus, ensuring safety through mentorship, risk awareness and strict compliance.