What Seasystems does

Seasystems AS is a Norwegian engineering and manufacturing company specializing in mooring solutions and offloading systems for floating offshore structures. Founded in 1953 (originally as Brødrene Johnsen, later operating as Scana Offshore before rebranding to Seasystems in 2020), the company is headquartered in Vestby, approximately 40 km south of Oslo, and is a wholly-owned subsidiary of Scana ASA, a publicly listed Norwegian industrial investment company focused on ocean industries.

The company's core offering centers on mooring hardware and integrated systems, including compact and disconnectable turret systems, spread mooring equipment (FDACS, DACS, fixed chain stoppers, chain jacks), quick-release sea-fastening systems, offloading systems (hose reels, hawser winches, floating hoses, ESD valves), and production and loading swivels. Through a September 2025 cooperation agreement with Stena Bulk, Seasystems also holds exclusive global rights to market the patented Jettyless Floating Terminal (JFT) and Extended FSU/FSRU Mooring (EFM) technologies for floating LNG infrastructure, plus a patent-pending Floating Jetty solution for riser and cable protection.

Seasystems operates a project-based B2B revenue model with individual contract values ranging from NOK 25M (sizeable) to over NOK 250M (very large), typical project lifecycles of 1-2 years, and additional recurring revenue from spare parts and aftermarket services. The company sells directly to enterprise customers via dedicated sales directors and regional representatives in China and Brazil, targeting four verticals: oil & gas (FPSOs, FSOs), LNG infrastructure (FLNG, FSRU), floating offshore wind (e.g., Equinor Hywind Tampen), and aquaculture (e.g., Nordlaks Havfarm 1). Quality management is ISO 9001:2015 certified since 1997.

Name

Seasystems

Legal name

Seasystems AS

Website

https://seasystems.no

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

11–50 employees

Short description

Seasystems AS is a Norwegian engineering and manufacturing company that designs and delivers mooring solutions, offloading systems, and swivels for floating offshore structures, serving oil & gas, LNG, floating wind, and aquaculture operators globally.

Ownership category

akta.pro rank

Product category

Offshore Mooring Systems & Equipment

NAICS

Ship Building and Repairing (336611), Ship and Boat Building (33661), Support Activities for Water Transportation (4883)

SIC

Oil & Gas Field Machinery & Equipment (3533), Ship & Boat Building & Repairing (3730), Construction Machinery & Equip (3531)

akta.pro primary industry

Deck Machinery & Mooring Systems (Winches, Windlasses, Capstans) (IMAJAIAA)

akta.pro secondary industries

Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE), FPSO/FSO Hull Construction & Conversion (IMAJACAC), Offshore Wind & Renewable Support Vessel Construction (SOV, CTV, WTIV) (IMAJACAG)

Keywords

• Offshore mooring systems
• FPSO turret solutions
• Floating offshore wind
• Jettyless LNG terminals
• Offloading and swivels

Headquarters

HQ city

Vestby

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales

Revenue model

1. Mooring Systems and Equipment: Design, engineering, fabrication, and delivery of mooring systems including turret systems, spread mooring equipment, chain stoppers, chain handling systems, winches, and associated hardware. Revenue is project-based with significant contract sizes ranging from NOK 25-75M (sizeable) to NOK 75-150M (substantial). Projects typically span 1-2 years from award to delivery.
2. Engineering and Project Management Services: Mooring analysis, FEED studies, detail engineering, installation engineering, and commissioning services bundled with equipment deliveries. Also provided as standalone engineering studies.
3. Spare Parts and Aftermarket: Large stock of spare parts delivered to customers globally, supported by technical documentation and online technical support services. Operational support including service, maintenance, and repair operations worldwide by trained technicians.
4. Jettyless LNG Technology Licensing (Exclusive Rights): Through the cooperation agreement with Stena Bulk, Seasystems holds exclusive rights to market, sell, and deliver Stena's patented jettyless LNG technologies (JFT and EFM). This opens a new revenue stream for floating LNG terminal projects without fixed infrastructure.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Seasystems designs, engineers, fabricates, and installs mooring systems and associated equipment for floating offshore structures — including turret systems, spread mooring equipment (chain stoppers, chain jacks, FDACS/DACS), offloading systems, production swivels, and quick release sea-fastening systems — serving FPSO/FLNG/FSRU operators, floating offshore wind developers, and offshore aquaculture projects. Through an exclusive license with Stena Bulk, the company also markets patented jettyless floating LNG terminal (JFT) and FSU/FSRU mooring (EFM) technologies for infrastructure without fixed jetties.

Product overview

Seasystems delivers sophisticated and reliable mooring solutions and associated systems to floating structures across three market segments: aquaculture, floating wind, and oil & gas. The product portfolio centers on mooring solutions comprising turret systems (Compact Turret and Disconnectable Turret), spread mooring equipment (FDACS, DACS, Fixed Chain Stoppers, Chain Jacks), and quick release sea-fastening systems. Supporting products include offloading systems (hose reels, hawser winches, offloading hoses), production and loading swivels (including crude oil swivels), and engineering studies services. Through a partnership with Stena Bulk, Seasystems exclusively markets and sells patented jettyless LNG technologies including the Jettyless Floating Terminal (JFT) and Extended FSU/FSRU Mooring (EFM) systems. The company provides comprehensive project delivery including project management, mooring analysis, engineering, fabrication, installation, and aftermarket services with spare parts support.

Differentiator

Problem solved

Functional benefit

Products and services

• Compact Turret System Compact turret system for permanent mooring of floating structures such as FPSOs, designed for cost-effective and reliable operation in demanding offshore environments. Targeted at FPSO operators and EPC contractors.
• Disconnectable Turret System Disconnectable turret system allowing vessels to detach from mooring in emergencies or for weather-related reasons, providing operational flexibility. Targeted at FPSO operators.
• FDACS (Flow Distribution and Compensation System) Off-vessel tensioning system for spread mooring applications, enabling effective load distribution and compensation with disconnect capability. Targeted at FPSO spread-mooring users.
• DACS (Dual Anchor Chain Stopper) Disconnectable chain stopper system with quick-release properties for securing anchor chains in spread mooring configurations. Targeted at FPSO spread-mooring operators.
• Fixed Chain Stoppers Well-proven fixed chain stopper solutions for permanent spread mooring. Targeted at FPSO operators with spread mooring configurations.
• Chain Jacks Mechanical chain handling equipment for tensioning and retrieving anchor chains in mooring operations. Targeted at FPSO and offshore mooring operators.
• Quick Release Sea-Fastening System Quick release system for sea fastening of bottom-fixed windmills during transport, with push-button release and no bolting required. Derived from FPSO turret disconnect technology. Targeted at floating offshore wind developers and installers.
• Offloading Systems Complete offloading systems for FPSOs and FSOs including hose reels, offloading hoses (12-20 inches), hawser winches, and hose end valves/ESD valves. Targeted at FPSO and FSO operators.
• Production and Loading Swivels (In-line and Toroidal) In-line and toroidal crude oil and gas swivels enabling safe transfer of liquids between geostationary risers and FPSO piping systems. Targeted at FPSO operators requiring safe fluid transfer.
• Crude Oil Swivels Swivel systems with proven track record for crude oil transfer applications. Targeted at FPSO operators needing safe crude transfer from geostationary risers.
• Jettyless Floating Terminal (JFT) Patented jettyless LNG terminal solution enabling flexible and cost-effective LNG import/export without fixed jetties or permanent onshore infrastructure, licensed exclusively from Stena Bulk. Targeted at LNG developers, FSRU operators, and energy companies in remote or shallow-water locations.
• Extended FSU/FSRU Mooring (EFM) Patented mooring system for FSU/FSRU vessels enabling flexible floating LNG infrastructure in shallow-water and remote coastal regions, licensed exclusively from Stena Bulk. Targeted at LNG developers and FSRU operators in shallow-water regions.
• Engineering Studies Engineering services for mooring systems and offshore equipment covering mooring analysis, FEED studies, detail engineering, installation engineering, procurement, commissioning, testing, and certification. Provided as both standalone studies and bundled with equipment deliveries. Targeted at FPSO, FLNG, FSRU, floating wind, and aquaculture project developers.
• Aftermarket Services Operational support including service, maintenance, repair, worldwide installation by trained technicians, and on-site assistance during start-up. Targeted at existing customers with installed Seasystems equipment.
• Spare Parts Large stock of spare parts delivered to customers globally with quick delivery, plus online technical support via email or phone. Targeted at existing FPSO/FLNG/floating wind/aquaculture customers needing replacement parts.
• Turret Structural Connector System with Quick Disconnect Structural turret connectors with quick disconnect properties for FPSO applications, delivered as a designed, analyzed, and third-party-approved system. Targeted at FPSO operators in the Gulf of Mexico and similar jurisdictions.
• Floating Jetty for Riser and Cable (Patent Pending) Floating jetties that keep gas risers and power cables away from the seabed near shore, providing dynamically favourable geometry for long-term operation; based on a patent-pending Seasystems technology. Targeted at FLNG and other nearshore LNG/riser projects.

Quantifiable outcome

• Seasystems has delivered over 10 turret systems historically and major mooring systems for 10+ years across oil & gas, LNG, aquaculture, and floating wind segments.
• +2 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature12 records

Partnerships

One partnership is on record.

• Stena BulkcoreStrategic or Co-development Partner · 5 September 2025Seasystems and Stena Bulk signed a cooperation agreement in September 2025 to promote innovative floating LNG infrastructure solutions. The partnership combines Seasystems' mooring and fluid transfer expertise with Stena's proprietary EFM and JFT jettyless LNG technologies. Seasystems holds exclusive rights to market, sell, and deliver Stena's patented jettyless LNG technologies globally. Technologies and patents remain owned by Stena Bulk.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• SOFEC: SOFEC is a global leader in turret mooring systems for FPSOs, FSOs, and FSOs/FSRUs, with decades of similar disconnectable and permanent turret technology. Direct competitor to Seasystems in FPSO mooring; comparable in product scope (turret systems, spread mooring) but typically larger and owned by MODEC.
• Vryhof Anchors: Vryhof supplies mooring and anchoring solutions for offshore vessels including FPSOs, semisubmersibles, and floating wind. Direct peer in mooring chain, anchor, and chain stopper technologies serving the same offshore customer base as Seasystems.
• InterMoor (Acteon): InterMoor, part of Acteon, is a global mooring services and equipment provider offering chain stoppers, winches, and installation services for FPSOs, FSOs, and floating wind. Directly competes with Seasystems in mooring equipment and spread mooring hardware for offshore projects.
• Delmar Systems: Delmar Systems provides offshore mooring services and equipment including anchor handling, chain, and mooring hardware for drilling rigs, FPSOs, and offshore installations. Direct peer in mooring equipment and services for offshore structures.

Broad incumbents

• SBM Offshore: SBM Offshore is a major FPSO contractor and operator with in-house mooring engineering capability. While a broader incumbent in FPSO EPCI, it directly interfaces with Seasystems as both potential competitor for in-house mooring scope and customer via supply chain relationships.
• MODEC: MODEC is a leading FPSO owner/operator that historically bundled turret mooring through SOFEC (its subsidiary) and supplies chain stoppers. Broad incumbent competitor and adjacent ecosystem player in the FPSO mooring value chain.
• Bluewater Energy Services: Bluewater provides FPSO and FSO design, construction, and mooring solutions, with proprietary disconnectable turret technology (BTM). Comparable incumbent in FPSO turret mooring serving similar offshore oil & gas customers.

Emerging players

• Bridon-Bekaert Ropes Group: Bridon-Bekaert supplies high-performance mooring ropes and chains used in FPSO, floating wind, and offshore aquaculture mooring systems. Overlaps with Seasystems in chain and mooring line hardware, particularly for floating wind and aquaculture applications.

Others

• Scana ASA: Parent company and listed industrial investment holding for ocean-industries businesses. Includes Seasystems plus other offshore-related portfolio companies (e.g., Subsea Solutions). Related party rather than direct competitor but reflects the parent ecosystem Seasystems operates within.
• Stena Bulk: Owner of the patented jettyless LNG (JFT) and EFM technologies that Seasystems exclusively markets. Strategic partner rather than competitor, but the IP licensor relationship and overlapping LNG/marine logistics ecosystem make Stena Bulk a key adjacent participant in Seasystems' growth path.

Market position

Weaknesses1 record

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/scanaseasystems
• Facebookfacebook.com/seasystemsas

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Seasystems