Sea Technology

What Sea Technology does

Sea Technology AB is a privately held Swedish maritime engineering firm founded in 1972 in Gothenburg (now headquartered at Swedenborgsgatan 2, Stockholm) that has evolved from a traditional naval architecture consultancy into a deep-tech developer of modular floating port and energy infrastructure. The company's flagship product is the Sea Tech Floating Terminal (STFT), a 600x400-metre modular concrete offshore transshipment platform engineered to berth Ultra Large Container Vessels up to 30,000 TEU and deliver 5-6 million TEU of annual throughput, with Megamax STS cranes, Trelleborg AutoMoor line-free mooring, hydrogen/ammonia/methanol-capable 100 MW generator sets, and a 60-year design life. The STFT received DNV Approval in Principle under the OI Floating Infrastructure Installation notation in August 2025, described as the first modular floating port at this scale to clear a major class society's review. Two derivative platforms extend the same foundation: a Floating Nuclear Power Plant (FNPP) developed with Blykalla AB combining SMR generation with the STFT hull, and Barge Carrier Systems (a 370-410m mother ship with up to eight satellite barges validated by SSPA tank testing for Panama Canal-class duty cycles).

The business model is project-based enterprise sales of high-capex infrastructure assets, with revenue derived from engineering design, construction oversight, and long-term infrastructure licensing. Sea Technology sells directly to four customer segments: major shipping lines (targeted include MSC, Maersk, CMA CGM); port authorities and terminal operators facing ULCV-capacity constraints; energy authorities and utilities for FNPP baseload power; and national/regional government delegations for infrastructure strategy. Commercial sales motions run through senior leadership (CEO Therese Lundquist and CTO Anders Ulfvarson), supported by a deeply credentialed advisory bench spanning naval architecture, maritime finance, ESG, and law, and a partner ecosystem that includes MEYER Floating Solutions for fabrication, DNV for classification, RISE Research Institutes of Sweden for independent validation, Trafikverket for Swedish infrastructure planning, and Trelleborg and Alfa Laval for component integration. As of the input data (with news through April 2026), no commercial STFT deployment contract has been publicly announced, and Sea Technology remains pre-revenue on its core platform while still operating from a 1-10 employee base following the February 2026 death of founder Bengt Lundquist.

Name

Sea Technology

Legal name

Sea Technology AB

Website

https://seatech.se

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

1–10 employees

Short description

Sea Technology AB is a Swedish maritime engineering firm developing the DNV-approved Sea Tech Floating Terminal, a modular offshore transshipment platform serving Ultra Large Container Vessels up to 30,000 TEU for port authorities, major shipping lines, and energy utilities.

Ownership category

akta.pro rank

Product category

Maritime Infrastructure Engineering

NAICS

Marine Cargo Handling (48832), Port and Harbor Operations (488310), Ship Building and Repairing (336611), Other Support Activities for Water Transportation (488390)

SIC

Water Transportation (4400), Misc Industrial & Commercial Machinery & Equipment (3590)

akta.pro primary industry

Deep-Sea Container Terminals (Mainline / Transshipment Hubs) (TLAHAAAA)

akta.pro secondary industries

FPSO/FSO Hull Construction & Conversion (IMAJACAC), Dry Docks & Floating Docks (Graving, Floating, Syncrolift) (IMAJALAA)

Keywords

• Floating port terminals
• Offshore container transshipment
• Floating nuclear power
• Marine engineering services
• Modular maritime infrastructure

Headquarters

HQ city

Saltsjöbaden

HQ country

Sweden

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Floating Terminal Sales/Deployment: Sea Technology designs and deploys floating terminals to port authorities and operators. Revenue derived from engineering design, construction oversight, and potentially long-term infrastructure licensing. The company works with MEYER Floating Solutions for modular construction at shipyard scale.
2. FNPP Platform Licensing: Floating Nuclear Power Plant platforms licensed to energy authorities and utilities for baseload power generation. Dual-generation design pairs SMR technology with Blykalla AB.
3. Barge Carrier Systems: Transshipment hub systems for shipping lines operating Panama Canal-class routes. Mother ship plus satellite barge configurations.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Sea Technology designs, validates, and licenses modular floating maritime infrastructure platforms for port operators, shipping lines, and energy utilities. The company's flagship product, the Sea Tech Floating Terminal (STFT), is the world's first DNV-approved floating container terminal capable of handling Ultra Large Container Vessels up to 30,000 TEU on a 600x400m modular platform with a 60-year asset life. Complementary offerings include the Floating Nuclear Power Plant (FNPP) developed with Blykalla AB for up to 1 GW of clean baseload power and Barge Carrier Systems for Panama Canal-class transshipment operations.

Product overview

Sea Technology develops a portfolio of modular floating maritime infrastructure solutions centered on the Sea Tech Floating Terminal (STFT) as the core platform. The STFT serves as the foundational module for both the Floating Nuclear Power Plant (FNPP) and supports the Barge Carrier Systems through shared engineering approaches. The STFT is a DNV-approved, MEYER-built floating container terminal with a 60-year asset life, while the FNPP leverages the same platform foundation for power generation, and the Barge Carrier Systems offer complementary transshipment capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Sea Tech Floating Terminal (STFT) The world's first DNV-approved floating container terminal: a modular offshore transshipment hub designed to service Ultra Large Container Vessels up to 30,000 TEU. Handles 5-6 million TEU per year on a 600x400m platform with a 60-year asset life, deployable in up to 1,000m water depth without dredging. Targets port authorities, terminal operators, shipping lines, and government delegations needing ULCV-grade capacity delivered in under 5 years.
• Floating Nuclear Power Plant (FNPP) Self-contained floating power generation platform built on the STFT foundation, delivering up to 1 GW of clean electrical power through a dual-generation design pairing 180 MWe MDO gen sets with up to four 250 MWe Small Modular Reactors. Targets energy authorities, utilities, and industrial sites needing clean baseload power without land permits or grid build-out.
• Barge Carrier Systems Float On/Float Off transshipment system comprising a 370-410m mother ship carrying up to 8 floating satellite barges, designed for Panama Canal transshipment and ULCV feeder routes. The hull submerges sections for float-on/float-off satellite loading. Targets shipping lines operating high-volume feeder routes.

Quantifiable outcome

• 5-6 million TEU per year throughput capacity per platform
• +5 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• MEYER Floating Solutions Ltd.coreStrategic or Co-development Partner · 25 September 2025Partnership to deliver the Sea Tech Floating Terminal (STFT), a scalable, class-approved floating port solution. MEYER provides world-class modular fabrication capabilities and proven expertise in large-scale floating structures. The partnership combines Sea Technology's sustainable port terminal concept with MEYER's advanced floating architecture and marine engineering. Kaj Casén serves as CEO of MEYER Floating Solutions.
• DNVcoreTechnology or Integration · 1 August 2025Classification society that issued Approval in Principle for the STFT under OI Floating Infrastructure Installation notation in August 2025. First modular floating port at this scale to clear DNV's approval gate. DNV references DNVGL-RU-OU-0571 and DNV-OS-C102 standards.
• Blykalla ABcoreStrategic or Co-development Partner · 11 September 2024Partnership to explore Floating Nuclear-Powered Terminals (FNPTs) combining Blykalla's Small Modular Reactor (SMR) technology with Sea Tech's floating platform expertise. MOU signed for conceptual design development, market opportunity exploration, and regulatory requirement evaluation. Ralph Stephan serves as contact at Blykalla.
• RISE Research Institutes of SwedencoreStrategic or Co-development PartnerResearch partner providing independent engineering validation for the STFT concept. Validated carbon-intensity reduction per TEU handled. Contributed to RISE study on floating terminals as sustainable port infrastructure alternative. Ongoing collaboration in engineering, industry, and research.
• Trafikverket (Swedish Transport Administration)minorStrategic or Co-development PartnerSwedish government agency supporting Sea Technology projects. Provides infrastructure planning perspective and potential deployment pathways for floating terminals in Swedish and European contexts.
• Sting (Swedish Maritime Cluster)minorStrategic or Co-development PartnerSwedish maritime industry cluster network. Part of broader industry collaboration ecosystem supporting STFT development and commercialization.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Others

• Mammoet: Mammoet is a heavy-lifting and engineered-transport specialist serving marine, offshore, and infrastructure projects. It is an adjacent ecosystem participant providing heavy-lift services that complement floating-terminal construction and deployment.

Broad incumbents

• SBM Offshore: SBM Offshore is a global incumbent in FPSO hull design, construction, and operation, with decades of class-approved floating production experience. It is a broad incumbent whose FPSO hull engineering directly overlaps with the floating-platform discipline Sea Technology applies to the STFT.
• Damen Shipyards: Damen builds a wide range of commercial and specialised vessels including floating infrastructure. It is a broad incumbent in shipbuilding whose engineering and yard capacity overlap with the modular concrete fabrication approach behind the STFT.
• Boskalis: Boskalis is a major marine contractor with dredging, offshore, and maritime infrastructure services, including port construction and subsea rock installation. While it operates in adjacent contracting and dredging work, its marine infrastructure engineering overlaps with the offshore-deployment scope behind STFT.
• Royal HaskoningDHV: Royal HaskoningDHV is a global engineering consultancy with a strong port and maritime infrastructure practice serving port authorities and terminal operators. Comparable to Sea Technology at the port design and feasibility layer, though at a much broader portfolio level.
• COWI: COWI is a major engineering consultancy with maritime, offshore, and major-infrastructure experience including ports and offshore terminals. Comparable to Sea Technology in naval-architecture and offshore-engineering capability, operating at the consultancy layer rather than as a platform owner.

Direct peers

• Bluewater Energy Services: Bluewater develops floating storage and terminal solutions for the oil & gas and renewables sectors, including FPSO/SPAR hulls and floating terminals. Its floating infrastructure portfolio directly parallels Sea Technology's STFT/FNPP platform strategy.
• Höegh LNG Holdings: Höegh operates floating LNG import terminals (FSRUs) and specialised LNG carriers, with class-approved mooring and regasification systems on floating platforms. Its floating-terminal business model is one of the closest analogues to Sea Technology's STFT configuration.
• MEYER Floating Solutions: MEYER Floating Solutions is Sea Technology's core strategic partner for modular fabrication of the STFT. Both operate in the same floating marine infrastructure category, although MEYER acts primarily as the fabrication/engineering house rather than the concept originator.
• Exmar: Exmar develops and operates floating regasification/LNG terminals and specialised gas carriers, one of the few listed companies with operational floating terminal infrastructure. Its product architecture mirrors Sea Technology's transshipment-terminal concept.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/SeaTechnology1
• Facebookfacebook.com/100057053485748
• LinkedInlinkedin.com/company/sea-technology

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds1 record

Investors1 record

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 Sea Technology