SK Oceanplant
SK Oceanplant is a South Korean KOSPI-listed industrial manufacturer (subsidiary of SK Group) that designs and builds offshore wind jacket foundations, naval and commercial vessels, and tubular steel products, serving global offshore wind developers and government defense agencies including the Korean and U.S. Navies.
- Company typePublic
- Founded2010
- HeadquartersGoseong, South Korea
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What SK Oceanplant does
SK Oceanplant (에스케이오션플랜트 주식회사, KOSPI: 275630) is a South Korean heavy-industrial manufacturer, formerly Samgang M&T, rebranded in February 2023 following acquisition by SK Group and now operating as a subsidiary of SK Eco Plant. Headquartered in Goseong, Gyeongsangnam-do with additional manufacturing facilities in Miryang, Ulsan, and Samgang, the company employs 501-1,000 people and reported revenue of KRW 691.8 billion (approximately $525M USD) with operating profit of KRW 71.9 billion (+172% YoY) in its most recent disclosed fiscal year.
The company operates four divisions — Offshore Wind, Shipbuilding, Tubular Steel, and Plant — with offshore wind jacket substructures for fixed-bottom and floating turbines as its flagship product line, including units up to 97m tall and ~2,700 tonnes supporting 15MW turbines, manufactured at a 2GW-per-year capacity. The shipbuilding division constructs Ulsan-class Batch III frigates for the Republic of Korea Navy (3,600-ton class, Jeju/Gyeongbuk/Jeonnam), 3,000-ton patrol vessels for the Korea Coast Guard, and has recently entered methanol dual-fuel commercial tanker construction. Tubular steel is produced via what the company claims is Korea's first domestically developed LSAW line, feeding its own foundation production. Core technology is differentiated by patented jacket production methods, proprietary WQMS and NQMS digital quality platforms, and the industry-first SQSW quality standard (2025).
The business model is project-based enterprise and government sales with custom, quote-based pricing. GTM is sales-led and event-driven, targeting global offshore wind developers (CIP, Corio Generation, Anma Offshore Wind, KF Wind, NSE, Mun Mubaram) through direct engagement and MOUs, and government defense agencies (Korean Navy, Coast Guard, and now the U.S. Navy following a February 2026 MSRA). Revenue is generated via one-time project contracts, with revenue streams concentrated across offshore wind foundations, naval vessel construction, commercial shipbuilding, and tubular steel products.
SK Oceanplant firmographics
Firmographics- Name
- SK Oceanplant
- Legal name
- 에스케이오션플랜트 주식회사 (SK Oceanplant Co., Ltd.)
- Website
- https://skoceanplant.com
- Company type
- Public
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- SK Oceanplant is a South Korean KOSPI-listed industrial manufacturer (subsidiary of SK Group) that designs and builds offshore wind jacket foundations, naval and commercial vessels, and tubular steel products, serving global offshore wind developers and government defense agencies including the Korean and U.S. Navies.
- Ownership category
- akta.pro rank
SK Oceanplant industry classification
Industry- Product category
- Shipbuilding & Offshore Wind Substructure Manufacturing
- NAICS
- Ship Building and Repairing (336611), Ship and Boat Building (3366), Ship and Boat Building (33661)
- SIC
- Ship & Boat Building & Repairing (3730)
- akta.pro primary industry
- Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE)
- akta.pro secondary industries
- Surface Combatants (Destroyers, Frigates, Corvettes) (IMAJABAA), Marine & Offshore Wind BOP Construction (Foundations, Cables, Ports, Installation Support) (EUAMAFAI)
Keywords
Where SK Oceanplant is headquartered
LocationHeadquarters
- HQ city
- Goseong
- HQ country
- South Korea
- HQ region
- Asia
Offices5 records
Markets served
SK Oceanplant business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Offshore Wind Foundations: Design, engineering, and manufacturing of jacket substructures for fixed-bottom and floating offshore wind turbines, sold directly to project developers and EPC contractors
- Naval Vessel Construction: Construction of naval vessels including frigates and patrol vessels for government defense agencies, sold through direct government procurement contracts
- Merchant Ship Construction: Construction of merchant vessels including methanol dual-fuel tankers for commercial shipping operators
- Tubular Steel Products: Production and sale of tubular steel products for industrial applications
Go-to-market motion2 records
Distribution channels2 records
Marketing channels2 records
SK Oceanplant product offering
Product offeringCore offering
SK Oceanplant designs, engineers, and manufactures large-scale offshore wind jacket substructures (fixed-bottom and floating foundations) for wind turbine installations, and constructs naval vessels including Ulsan-class Batch-III frigates for the Republic of Korea Navy and patrol vessels for the Korea Coast Guard. The company additionally builds commercial vessels (methanol dual-fuel tankers), offshore/onshore industrial plants, and tubular steel products, supported by proprietary welding quality and non-destructive testing platforms.
Product overview
SK Oceanplant is a global top-tier offshore wind substructure specialist with a diversified maritime solutions portfolio. The company operates four core divisions — Offshore Wind (해상풍력), Shipbuilding (조선사업), Tubular Steel (강관사업), and Plant (플랜트) — supported by proprietary digital quality management platforms WQMS and NQMS and the company's own industry-first SQSW quality standard. The flagship product line is offshore wind jacket substructures for fixed-bottom and floating wind turbines, which are manufactured in-house using the company's own tubular steel products. The Shipbuilding division produces Ulsan-class frigates (Batch-III) for the Korean Navy and Coast Guard patrol vessels alongside commercial vessels such as methanol dual-fuel tankers. The company also operates an Industrial Training Center (산업전환공동훈련센터) as a government-recognized workforce development program. All divisions are unified under the SK Oceanplant brand (rebranded from Samgang M&I in February 2023) within the SK ecoplant group.
Differentiator
Problem solved
Functional benefit
Products and services
- Offshore Wind Substructures (Jacket Foundations) Design and manufacture of fixed-bottom offshore wind jacket substructures for large-scale offshore wind turbines. SK Oceanplant produces the world's largest fixed offshore wind substructures (heights up to 97m, ~2,700 tonnes per unit), supporting turbines rated up to 15MW. Sold to offshore wind developers and EPC contractors.
- Naval Vessel Shipbuilding (Ulsan-class Frigates Batch-III) Construction of 3,600-ton class Ulsan Batch-III frigates for the Republic of Korea Navy. SK Oceanplant is simultaneously building 3 ships (Jeju, Gyeongbuk, Jeonnam) with 6-month intervals between deliveries.
- Specialty Ships (Patrol Vessels) Construction of specialty vessels including patrol boats and offshore patrol vessels for the Korea Coast Guard. SK Oceanplant delivered a 3,000-ton class Coast Guard patrol vessel (Busan 3001) in May 2024.
- Commercial Vessels (Methanol Dual-Fuel Tankers) Construction of commercial vessels, including the company's recent entry into eco-friendly methanol dual-fuel tankers for KTS Shipping and Sejun Shipping Management.
- Floating Wind Substructures Design and manufacture of floating substructures (buoys/floater units) for floating offshore wind turbines. SK Oceanplant was selected as priority negotiation partner for KF Wind's floating wind project and has partnered with Munmubang for co-development.
- Tubular Steel Products Manufacturing of tubular steel products, which SK Oceanplant claims as Korea's first domestically developed and produced LSAW (Longitudinal Submerged Arc Welding) line, backed by over 20 years of manufacturing expertise.
- Offshore/Onshore Plant Engineering Design and construction of onshore and offshore industrial plant facilities, encompassing the broader plant engineering and construction business line.
Quantifiable outcome
- Annual offshore wind foundation manufacturing capacity of 2GW
- +3 more outcomes
Companies that use SK Oceanplant
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
SK Oceanplant technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
SK Oceanplant partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core and minor.
- Copenhagen Infrastructure Partners (CIP)coreSK Oceanplant is the foundation supplier for CIP's Fengmiao 1 offshore wind project in Taiwan. This is a core strategic partnership with one of the world's largest offshore wind project developers.
- Corio GenerationcoreMOU signed for long-term cooperation covering 6.8GW across 6 offshore wind projects. Corio Generation is a global offshore wind developer and the partnership represents a major pipeline of future business.
- NSE (Nippon Steel Engineering)coreMOU for long-term cooperation with Japan's largest offshore wind construction company. NSE brings expertise in the Japanese offshore wind market and engineering capabilities.
- British Embassy in Korea (주한영국대사관)minorMOU signed for cooperation in the UK offshore wind market. A diplomatic channel partnership aimed at facilitating market entry and project development in the UK.
- Anma Offshore Wind (안마해상풍력)coreSK Oceanplant secured extended preferred negotiator status for a 532MW offshore wind project using 14MW jacket foundations. This represents a significant commercial win.
- KF Wind (한국부유식풍력)corePreferred negotiator status secured for the supply of floating foundations for offshore wind projects. KF Wind is a Korean floating offshore wind specialist.
- Korean Floating Wind (한국부유식풍력)corePriority negotiation status for floating substructure supply for floating offshore wind projects.
- Mun Mubaram (문무바람)corePartnership for floating offshore wind development with MOU signed at the Korea-Sweden summit. Mun Mubaram is a Swedish floating wind developer.
- SK Eco Plant (SK에코플랜트)coreECO Partners workshop collaboration with sister companies SK Eco Plant and SK Eco Engineering and SK Air Plus. Intra-group strategic cooperation.
- SK Eco Engineering (SK에코엔지니어링)coreECO Partners workshop collaboration with sister companies SK Eco Plant and SK Eco Engineering and SK Air Plus. Intra-group strategic cooperation.
- SK Air Plus (SK에어플러스)coreECO Partners workshop collaboration with sister companies SK Eco Plant and SK Eco Engineering and SK Air Plus. Intra-group strategic cooperation.
- Doosan Enerability (두산에너빌리티)minorMOU for Korea-US Navy MRO (Maintenance, Repair, and Overhaul) cooperation. Defense industry collaboration for naval vessel maintenance.
- STX Engine (STX엔진)minorMOU for Korea-US Navy MRO (Maintenance, Repair, and Overhaul) cooperation. Defense industry collaboration for naval vessel maintenance.
- General DynamicsminorKey partner discussions for US Navy cooperation. General Dynamics is a major US defense contractor.
- BarossaminorFPSO hull delivery partnership. Barossa is an FPSO (Floating Production, Storage and Offloading) operator.
Scale indicators6 records
Recent moves6 records
Expansion highlights7 records
SK Oceanplant competitors and assessment
Company assessmentBroad incumbents
- Hanwha Ocean: Hanwha Ocean (formerly DSME) is one of Korea's top three shipbuilders with extensive naval and offshore wind track record. It competes with SK Oceanplant for Korean Navy surface combatant programs and is developing its own offshore wind foundation offerings, making it a primary competitor across both core business lines.
- HD Hyundai Heavy Industries: HD Hyundai is the largest Korean shipbuilder and a major participant in both naval frigate construction and offshore wind structures, with its own substructure capabilities. It competes with SK Oceanplant for Korean Navy frigate contracts and global offshore wind foundation work, though it is significantly larger and more diversified across commercial shipbuilding.
- Samsung Heavy Industries: Samsung Heavy Industries is a major Korean shipbuilder with strength in offshore plant, FPSO hulls, and naval auxiliary vessels. It overlaps with SK Oceanplant in shipbuilding services and offshore structures, particularly for FPSO hulls and large marine fabrications, serving similar enterprise and government clients.
Direct peers
- Lamprell: Lamprell is a UAE-based provider of fabricated offshore structures, including jackets and topsides for offshore wind and oil & gas. It is a direct peer in offshore wind jacket manufacturing for global developers, and a comparable example of a regional fabrication specialist scaling up for offshore wind demand.
- Sif Group: Sif Group is a Netherlands-based manufacturer of monopile and jacket foundations for offshore wind. It is a direct peer in the offshore wind substructure market, with European manufacturing footprint competing for similar developer customers as SK Oceanplant's growing European presence.
- EEW SPC: EEW SPC is a German specialist in heavy steel tubular structures and monopile foundations for offshore wind. It competes with SK Oceanplant in the global offshore wind foundation supply chain, especially in the European market which SK Oceanplant entered in 2025.
- Smulders (Eiffage): Smulders is a Belgian steel construction company and offshore wind foundation manufacturer producing jackets, transition pieces, and high-voltage substation topsides. It directly competes with SK Oceanplant in jacket foundation delivery to European offshore wind developers.
- Bladt Industries: Bladt Industries is a leading European manufacturer of offshore wind foundations (monopiles and jackets) with a long track record in supplying European offshore wind developers. It is the most direct competitor to SK Oceanplant in jacket foundation manufacturing for global offshore wind projects.
Others
- SeAH Steel Holdings: SeAH is a leading Korean steel pipe and tubular product manufacturer with overlap to SK Oceanplant's tubular steel division (LSAW steel pipes). It is an adjacent industrial peer given SK Oceanplant's vertically integrated pipe manufacturing capability serving its own jacket foundation production.
Regional players
- CSBC Corporation (Taiwan): CSBC is a Taiwanese shipbuilder whose offshore wind division is a major supplier to Taiwan's offshore wind market, including jackets. SK Oceanplant is exporting jackets into Taiwan (Fengmiao 1), making CSBC both a regional competitor and a potential local partner as Taiwan scales up its offshore wind buildout.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
SK Oceanplant social profiles
Digital presenceSK Oceanplant compliance and trust
Trust signalCompliance6 records
SK Oceanplant financial estimates
Financial estimateRevenue estimate
Valuation estimate
SK Oceanplant leadership team
Management profileNumber of profiles
Profiles6 records
SK Oceanplant subsidiaries and ownership
Company hierarchySubsidiaries1 record
SK Oceanplant funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SK Oceanplant M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SK Oceanplant
What does SK Oceanplant do?
SK Oceanplant designs, engineers, and manufactures large-scale offshore wind jacket substructures (fixed-bottom and floating foundations) for wind turbine installations, and constructs naval vessels including Ulsan-class Batch-III frigates for the Republic of Korea Navy and patrol vessels for the Korea Coast Guard. The company additionally builds commercial vessels (methanol dual-fuel tankers), offshore/onshore industrial plants, and tubular steel products, supported by proprietary welding quality and non-destructive testing platforms.
Is SK Oceanplant a public or private company?
SK Oceanplant is a public company. It is classified as public and is currently operating.
When was SK Oceanplant founded?
SK Oceanplant was founded in 2010. It employs 501 to 1,000 people.
Where is SK Oceanplant based?
SK Oceanplant is headquartered in Goseong, South Korea, in the Asia region.
How does SK Oceanplant make money?
Four revenue lines are on record. Offshore Wind Foundations are the primary driver. The others are naval Vessel Construction, merchant Ship Construction and tubular Steel Products.
Who are SK Oceanplant's main competitors?
Broad incumbents on record are Hanwha Ocean, HD Hyundai Heavy Industries and Samsung Heavy Industries. Direct peers are Lamprell, Sif Group, EEW SPC, Smulders (Eiffage) and Bladt Industries. SeAH Steel Holdings is listed as an others. CSBC Corporation (Taiwan) is listed as a regional player.
Does SK Oceanplant have an API?
No public API is recorded for SK Oceanplant.
What industry is SK Oceanplant in?
SK Oceanplant's product category is Shipbuilding & Offshore Wind Substructure Manufacturing. Its primary akta.pro industry code is EUAMACAE, Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating), with a secondary code of IMAJABAA, Surface Combatants (Destroyers, Frigates, Corvettes). Its NAICS code is 336611 and its SIC code is 3730.