Moss Maritime

What Moss Maritime does

Moss Maritime a.s. is a Norwegian engineering firm founded in 1971 (with first LNG carrier delivered 1973) and headquartered in Lysaker, Norway. The company designs and engineers floating offshore structures for the energy and ocean-based sectors, with a portfolio spanning the Moss CS-series of semi-submersible catamaran drilling platforms (25,000–75,000 tons displacement), Moss LNG carriers with proprietary spherical tank technology (145 carriers built since 1973), FSRU/FSU/FLNG conversions, LH2 and LCO2 carrier designs, the XolarSurf floating solar concept, the FOSS floating offshore substation, and aquaculture and marine infrastructure solutions. Its technology base rests on cryogenic gas handling, semi-submersible hydrodynamics, and spherical containment systems that have been validated across more than 145 hulls and 10 FSRU conversions globally.

The company operates as a fully owned subsidiary of Saipem S.p.A., the Italian EPC contractor, which has held the business since 2001. Moss Maritime monetizes through professional engineering services (concept through detail design) delivered to owners, operators, fabricators and other engineering firms, supplemented by licensing of its proprietary Moss spherical tank, FLNG conversion, and regasification technologies to shipyards worldwide. It sells primarily via enterprise field sales targeting major oil companies, FPSO operators, shipowners, energy developers, and government clients, often as part of turn-key Saipem offerings. The company is organized around four business areas — Clean Energy Solutions, Ocean Technology and Infrastructure, Gas Technologies, and ECO Drilling Floaters — each led by a Vice President reporting to CEO Ida Husem.

Name

Moss Maritime

Legal name

Moss Maritime a.s.

Website

https://mossww.com

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

51–100 employees

Short description

Moss Maritime is a Norway-based, Saipem-owned engineering firm that designs proprietary floating offshore structures — LNG carriers, FSRUs, FLNGs, semi-submersible drilling platforms, hydrogen and CO2 carriers, and floating solar — for enterprise energy and ocean-sector clients worldwide.

Ownership category

akta.pro rank

Product category

Offshore Engineering Services

NAICS

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

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Offshore Wind & Renewable Support Vessel Construction (SOV, CTV, WTIV) (IMAJACAG)

akta.pro secondary industries

Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE), Deck Machinery & Mooring Systems (Winches, Windlasses, Capstans) (IMAJAIAA)

Keywords

• Offshore engineering services
• Floating LNG carriers
• Semi-submersible platforms
• Gas carrier design
• Floating renewable energy

Headquarters

HQ city

Lysaker

HQ country

Norway

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Engineering and Design Services: Moss Maritime provides design and engineering services covering all stages from concept development to detail engineering. Services are provided to owners, operators, fabricators and other engineering companies in offshore energy and ocean-based sectors.
2. Technology Licensing: The company licenses its proprietary technologies including Moss LNG carrier designs, Moss spherical tank technology, FLNG conversion technology, and regasification systems to shipyards and operators worldwide.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Moss Maritime provides design and engineering services for floating offshore structures serving the offshore energy and ocean-based sectors, complemented by proprietary technology such as Moss spherical LNG tanks, the CS-series of semi-submersible catamaran platforms, and patented FLNG conversion technology. Its work spans concept development through detail engineering for owners, operators, fabricators and other engineering companies. The portfolio extends to clean-energy floaters including LCO2 carriers, LH2 carriers, XolarSurf offshore floating solar, and FOSS floating offshore substations, with the ability to deliver turn-key solutions together with parent Saipem.

Product overview

Moss Maritime is a subsidiary of Saipem providing design and engineering services for offshore energy and ocean-based sectors. The company offers a portfolio of proprietary floating platform technologies including the Moss CS-series semi-submersible drilling platforms (CS30 through CS70, including the ECO-X™ sustainable variant), Moss LNG carriers with spherical tank technology, FSRU/FLNG floating terminals, LCO2 and LH2 carriers for carbon capture and hydrogen transport, XolarSurf offshore floating solar systems, FOSS floating substations, and aquaculture solutions. Engineering Services span all design stages from concept to detail engineering across multiple disciplines. The products share a common foundation in semi-submersible floater technology and cryogenic gas handling expertise developed over 40+ years.

Differentiator

Problem solved

Functional benefit

Brands

• Moss CS ECO-X™: A quantum leap in sustainable drilling operations, featuring hybrid power system, exhaust cleaning, clean fuels, and plug-in option for decarbonized drilling operations.
• Moss CS ECO™
• XolarSurf
• Moss LNG Carrier
• Moss Floating Injection Unit (FIU)

Products and services

• Moss LNG Carriers Gas carrier designs featuring proprietary spherical LNG tanks renowned for reliability and robustness, guaranteeing leak-free operation with no sloshing problems. Sold/licensed to shipowners, operators and shipyards worldwide.
• FSRU (Floating Storage and Regasification Units) Floating LNG regasification units and LNG carrier conversions, including Moss proprietary regasification systems, delivered to FSRU owners and operators.
• FLNG (Floating Liquefied Natural Gas) Patented technology and engineering for conversion of LNG carriers into floating gas liquefaction plants, delivered to FLNG developers and operators.
• Moss LCO2 Carriers Ship designs for transport of liquefied CO2 with containment systems operating at medium or low pressure, suitable for terminal-to-terminal transport or offshore discharge, designed to be fuel flexible and ready for green fuels such as ammonia and green methanol. Sold to shipowners and CCS developers.
• Moss Floating Injection Unit (FIU) Small, unmanned offshore CO2 injection platform with minimized steel weight and reduced cost, featuring a proprietary modular CO2 conditioning system and motion characteristics typical of semi-submersibles. Sold to CCS project developers.
• Moss LH2 Carriers Technology for ship transport of liquefied hydrogen featuring scalable spherical cargo tanks with a developed cargo handling system design. DNV Approval in Principle awarded in 2023. Sold/licensed to hydrogen shipping developers and shipowners.
• XolarSurf Offshore Floating Solar Power Patented modular offshore floating solar concept: Generation 1 for nearshore conditions with DNV statement of conformity; Generation 2 designed for waves up to 16m and combining offshore wind and solar. Sold/licensed to offshore renewable energy developers.
• FOSS Floating Offshore Substation Semi-submersible floating offshore substation design developed in collaboration with Saipem and Siemens, following DNV JIP principles with state-of-the-art sizing methodology for optimized hull design. Delivered to offshore wind developers.
• Moss CS ECO-X Semi-submersible catamaran design representing a quantum leap in sustainable drilling operations, featuring hybrid power system, exhaust cleaning, clean fuels, plug-in option, digitalization and automation. Delivered to offshore drilling operators and oil and gas majors.
• Moss CS-series Semi-Submersible Platforms (CS30, CS40, CS50, CS60, CS70) Semi-submersible catamaran platforms ranging from 25,000 to 75,000 tons displacement, field proven in harsh environments with excellent motion characteristics, used to design and engineer some of the largest and most advanced semi-submersible drilling platforms in the world. Delivered to drilling operators, oil and gas majors, and the U.S. Department of Defense (SDX-1 radar platform).
• Floating Production Systems (FPSO) Design and engineering services for oil and gas floating production facilities, focused on semi-submersibles and FPSO units with smart and energy-efficient solutions leveraging wind and solar to reduce carbon footprint. Delivered to FPSO operators and oil and gas majors.
• Aquaculture Solutions (SpiderCage and offshore aquaculture) Innovative and sustainable floating solutions for aquaculture, including SpiderCage exposed offshore cages, open ocean solutions, and inshore solutions, integrating barrier design, fish handling, feeding, monitoring, and harvesting systems with advanced robotics. Delivered to aquaculture operators.
• Marine Infrastructure Engineering expertise for large coastal structures, multi-use offshore platforms, floating tunnels, and novel solutions for floating bridges, covering structural design, naval architecture, and mooring analysis and design. Delivered to marine infrastructure developers.
• Engineering Services Full-spectrum engineering services from concept development to detail engineering, covering Arrangement & Layout, Project Services & Technical Safety, Gas Process Technology, Marine Structures, Marine & Utility Systems, and Naval Technology. Sold to owners, operators, fabricators and other engineering companies.

Quantifiable outcome

• 145 Moss LNG carriers constructed at shipyards in Asia, Europe and USA
• +4 more outcomes

Named customers6 records

Segments7 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Five partnerships are on record, tiered major, core and minor.

• DNVmajorStrategic or Co-development Partner · 1 January 2023DNV awarded Approval in Principle (AiP) for Moss LH2 carrier technology in 2023. DNV also issued statement of conformity for XolarSurf floating solar technology.
• SaipemcoreStrategic or Co-development Partner · 1 January 2001Moss Maritime is a fully owned subsidiary of Saipem, a global leader in engineering and construction of major projects for energy and infrastructure sectors. This provides Moss Maritime access to complementary competences and experience, and the ability to offer turn-key solutions together with Saipem.
• SiemensmajorStrategic or Co-development PartnerMoss Maritime collaborated with Saipem and Siemens to create a streamlined and efficient floating offshore substation solution (FOSS design).
• Golar LNGcoreStrategic or Co-development PartnerGolar LNG chose Moss Maritime's patented FLNG conversion technology for the world's first two FLNGs: Hilli Episeyo and Gimi. Projects realized through significant engineering contribution by Moss Maritime.
• Offshore QualificminorOthersMoss Maritime is registered as a supplier in Magnet Joint Qualification System (JQS) by Offshore Qualific, with ID 2508.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• SBM Offshore: Designer and operator of FPSOs and floating production systems with strong proprietary hull and mooring technology. Highly comparable to Moss Maritime's floating production designs and energy transition efforts, overlapping with the FPSO and semi-submersible floater businesses.

Broad incumbents

• Wood Group (Wood): Engineering and consultancy firm providing concept and FEED work for offshore energy, LNG and floating production projects. Compares to Moss's engineering services business across project stages.
• McDermott International: Global offshore engineering, procurement, fabrication and construction company focused on subsea, FLNG and offshore production. Competes with Moss for FLNG FEED and engineering work, particularly on large integrated EPC scopes.
• Aker Solutions: Large Norwegian-based offshore engineering and EPC firm serving oil & gas and offshore renewables, directly comparable to Moss Maritime's offshore energy engineering scope and Norwegian heritage. Both design floating production systems and offshore platforms for IOCs and renewables developers.
• Technip Energies: Global engineering and technology company specializing in LNG, FLNG, FSRU and floating offshore facilities — directly competes with Moss for FLNG and gas project engineering mandates. Same core customer base of national oil companies and FLNG developers.

Emerging players

• Höegh LNG: FSRU and FSU owner/operator that uses Moss Maritime's regasification engineering in its vessels. Comparable as a counterparty in FSRU projects and as a competitor in floating gas terminal design references.
• BW LNG: FSRU and LNG carrier operator that uses Moss-style LNG containment and regasification systems. Comparable as a customer and adjacent competitor in floating LNG terminal deployment.
• Golar LNG: Moss Maritime's primary FLNG partner (Hilli Episeyo, Gimi) and key FSRU customer (Golar Spirit). Comparable as a FLNG operator using Moss's patented conversion technology — together they constitute the world's only operational FLNG fleet.
• Principle Power: Designer of the WindFloat semi-submersible floating wind foundation — directly competes with Moss Maritime's FOSS floating offshore substation concept for the floating wind value chain. Both are Norwegian/European players targeting floating wind infrastructure.

Regional players

• Hyundai Heavy Industries (HHI) / Hanwha Ocean: Major Korean shipyard that has constructed Moss LNG carrier hulls and spherical tank designs. Comparable as Moss Maritime's licensee and engineering counterpart in vessel construction across the LNG carrier value chain.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/moss-maritime
• Facebookfacebook.com/mossmaritime

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Moss Maritime