What Sembmarine SLP Ltd does

Sembmarine SLP Ltd is a privately held company headquartered in Lowestoft, United Kingdom, operating in the offshore energy industry. The company was incorporated in 2010 and employs between 101 and 250 people, according to firmographic data. Its short company description asserts over 40 years of expertise in the offshore energy sector — a notable claim given the 2010 incorporation date, which suggests that the expertise may reside with personnel, legacy operations, or accumulated industry experience rather than the corporate entity itself. The company's website (sembmarineslp.com) returned only a placeholder loading screen during data collection, limiting direct primary-source visibility into its current operations and service portfolio.

No specific product or service portfolio is documented in the available source data. The company is contextualized within the broader marine engineering and offshore energy sector, a market that includes complex, high-value work such as dual-fuel vessel conversions, scrubber installations, and digitalized maintenance solutions. However, Sembmarine SLP Ltd's specific service offerings, technical capabilities, and customer relationships are not disclosed. The company name suggests a possible affiliation with Sembcorp Marine, the Singapore-listed marine engineering group; however, source commentary explicitly states that transactions and details involving Sembcorp Marine — including its acquisition of Keppel Offshore & Marine for over USD 3 billion and the Temasek Holdings leveraged buyout for over USD 1 billion — pertain to a distinct corporate entity and cannot be attributed to Sembmarine SLP Ltd without additional evidence linking the two.

The company's revenue, customer base, ownership structure, management team, and business model are not disclosed in the available sources. Operating status is presumed active, though no direct evidence of current operations was found in the data. The company is classified as private with no ticker symbol, exchange listing, or public ownership disclosures. There is no information available on funding history, partnerships, certifications, patents, or proprietary technology, creating significant data gaps that materially limit analytical conclusions about the company's competitive position, growth, and investability.

Name

Sembmarine SLP Ltd

Website

https://sembmarineslp.com

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

101–250 employees

Short description

Sembmarine SLP Ltd is a privately held UK company operating in the offshore energy sector, headquartered in Lowestoft with 101–250 employees. The company claims over 40 years of industry expertise, though its specific product portfolio, customer base, and revenue are not documented in available sources.

Ownership category

akta.pro rank

Product category

Offshore Energy Engineering Services

NAICS

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

SIC

Oil & Gas Field Services, Nec (1389), Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Marine & Offshore Energy O&M (Offshore Wind, Platforms, Subsea Assets) (EUAEAGAO)

akta.pro secondary industries

Underwater Inspection, Maintenance & Repair (UWILD, Diving/ROV, In-water Cleaning) (IMAJAFAJ), Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE)

Keywords

• Offshore energy services
• Marine engineering
• Ship repair maintenance
• Offshore platform services
• Offshore fabrication

Headquarters

HQ city

Lowestoft

HQ country

United Kingdom

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D

Core offering

Sembmarine SLP Ltd is a UK-based (Lowestoft) private company operating in the offshore energy industry, drawing on more than 40 years of expertise. It serves the marine engineering and ship repair/maintenance sector, working in the context of the broader global ship repair and maintenance services market. The company operates with 101-250 employees and is positioned as an engineering services provider for offshore energy assets.

Product overview

No specific product or service information for Sembmarine SLP Ltd is available in the provided source data. The company appears to be related to the broader maritime/ship repair and maintenance sector based on contextual references, but no detailed product portfolio, service offerings, or named products/modules are documented in the available sources.

Differentiator

Problem solved

Functional benefit

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators1 record

Direct peers

• Subsea 7: Subsea 7 is a global leader in subsea engineering, construction, and services to the offshore energy industry. It is comparable because both companies deliver offshore engineering and IMR-type scopes to oil & gas and offshore wind clients, and compete for similar subsea, SURF, and offshore wind installation tenders in the North Sea and globally.
• Aibel: Aibel is a Norway-based engineering, construction, and maintenance provider focused on the North Sea offshore energy market. It is directly comparable to Sembmarine SLP because both serve oil & gas and offshore wind clients in the North Sea with engineering, modifications, maintenance, and life-extension services from regional hubs.

Broad incumbents

• Worley: Worley is a global engineering and project delivery firm with a major offshore and subsea services practice serving energy, offshore wind, and hydrogen clients. It is comparable as a broad incumbent that competes for offshore engineering, modification, and maintenance scopes, and increasingly for offshore wind engineering services — overlapping with Sembmarine SLP's stated offshore energy remit.
• Seatrium: Seatrium is the combined entity formed from Sembcorp Marine's acquisition of Keppel Offshore & Marine. It is comparable as a global offshore engineering, repair, and conversion incumbent with overlapping service lines in ship repair, offshore platform work, and renewables — directly relevant as the consolidated competitive counterpart for Sembmarine SLP's North Sea activities.
• Saipem: Saipem is an Italian-based global provider of engineering, drilling, and construction services for the oil & gas and offshore renewables markets. It is comparable as a large-scale offshore EPC competitor whose asset-based service portfolio (vessels, fabrication, offshore operations) overlaps with Sembmarine SLP's marine engineering and offshore energy services positioning.
• McDermott International: McDermott delivers integrated engineering, procurement, construction, and installation services for offshore and subsea oil & gas projects. It is comparable as a Tier 1 offshore EPC contractor competing for the same complex retrofit, platform modification, and offshore wind scopes that mid-tier specialists like Sembmarine SLP support, often as a subcontractor or specialist partner.
• Petrofac: Petrofac provides offshore engineering, operations, and maintenance services to the energy sector. It is comparable as a broad services incumbent competing for offshore modification and maintenance scopes; though Petrofac is more weighted to operations support, its North Sea footprint and offshore capabilities put it in direct competition for the type of contracts Sembmarine SLP pursues.
• TechnipFMC: TechnipFMC is a global technology and services provider to the energy industry, with subsea and surface capabilities supporting offshore oil & gas and emerging offshore wind projects. It is comparable as a major integrated contractor that captures offshore engineering and project work, including North Sea scopes, against which a mid-tier UK specialist like Sembmarine SLP must compete or partner.
• Sembcorp Marine: Sembcorp Marine is the Singapore-based marine and offshore engineering group with apparent group-level ties to Sembmarine SLP Ltd. It is comparable as the parent ecosystem that consolidates offshore EPC yards and provides integrated solutions across rig building, ship repair, and offshore renewables — the same broad service categories in which Sembmarine SLP operates at a regional, mid-tier scale.

Regional players

• Helix Energy Solutions Group: Helix Energy Solutions provides offshore well intervention, decommissioning, and subsea robotics services primarily in the Gulf of Mexico and North Sea. It is comparable as a specialist offshore services firm executing well intervention, IMR, and subsea work — the same niche service categories Sembmarine SLP addresses — though its primary geographic center differs from Sembmarine SLP's UK base.

Market position

Weaknesses4 records

Competitive moat1 record

Key risks5 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 Sembmarine SLP Ltd