Houlder
Houlder is an employee-owned UK maritime design and engineering consultancy delivering naval architecture, marine engineering, and digital twin-based optimisation for shipping firms, ferry operators, research institutions, offshore wind developers, and government agencies across more than 3,000 projects since 1987.
- Company typePrivate
- Founded2002
- HeadquartersLondon, United Kingdom
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Houlder does
Houlder is a UK-based, employee-owned maritime design and engineering consultancy that conceives, designs, and delivers specialised vessels and offshore solutions for shipping companies, ferry operators, research institutions, offshore wind developers, and government agencies. Founded in 1987 and headquartered in London with additional offices in London and Portsmouth, the firm has delivered more than 3,000 projects spanning newbuild design, retrofits, specialist vessels, and offshore wind engineering.
The company's technical core is the proprietary HOME™ (Houlder Optimisation & Modelling Environment) platform, which combines vessel data, operational profiles, CFD simulations, and digital twin technology to analyse vessel performance under real-world conditions. Supporting capabilities include advanced RANS computational fluid dynamics (acquired via Seaspeed Marine Consulting in 2022), vessel motion monitoring systems, AI-based analytics for battery optimisation (BOSS Level project), and surrogate modelling work through the COMLink Design Tool with the University of Southampton.
Houlder operates a professional services, project-based revenue model: engagements are negotiated directly with enterprise and government clients via tenders and consultancy relationships, with no publicly disclosed pricing or recurring SaaS contracts. Customer work spans ferry hybridisation (IOMSPC Manxman, Wightlink Victoria of Wight), fuel efficiency retrofits (Siem Ducktail, Anemoi wind-assist propulsion), research vessel design (RRS Sir David Attenborough for BAS, Cefas replacement), offshore wind installation engineering (Rampion, Global Offshore, MPI Offshore), and regulatory advisory (MCA MASS review, EEXI compliance). Strategic R&D is increasingly consortium-driven with Lloyd's Register, classification bodies, and academic partners.
Houlder firmographics
Firmographics- Name
- Houlder
- Legal name
- Houlder Limited
- Website
- https://houlderltd.com
- Company type
- Private
- Founded year
- 2002
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Houlder is an employee-owned UK maritime design and engineering consultancy delivering naval architecture, marine engineering, and digital twin-based optimisation for shipping firms, ferry operators, research institutions, offshore wind developers, and government agencies across more than 3,000 projects since 1987.
- Ownership category
- akta.pro rank
Houlder industry classification
Industry- Product category
- Maritime Engineering Consultancy
- NAICS
- Ship Building and Repairing (336611)
- SIC
- Ship & Boat Building & Repairing (3730)
- akta.pro primary industry
- Project Management & Owner’s Engineering / Technical Consultancy (Spec Writing, Bid Support, Site Support) (IMAJAGAO)
- akta.pro secondary industries
- Hydrodynamics & Performance Engineering (Resistance, Propulsion, Seakeeping, Maneuvering) (IMAJAGAB), Production Design & Detailed Engineering (3D CAD, Drawings, BOM, Nesting) (IMAJAGAK)
Keywords
Where Houlder is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices3 records
Markets served
Houlder business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Consulting Services: Professional maritime consultancy services including naval architecture, marine engineering, and technical advisory. Services are provided on a project basis through direct engagement with clients.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Houlder product offering
Product offeringCore offering
Houlder is a maritime design and engineering consultancy that conceives, designs, and delivers naval architecture, marine engineering, and technical advisory services for shipping companies, ferry operators, research institutions, offshore wind developers, and government agencies. Its work centres on a proprietary Houlder Optimisation & Modelling Environment (HOME™) platform that combines digital twin simulations, computational fluid dynamics (CFD), and AI-based analytics to optimise vessel performance, fuel efficiency, and regulatory compliance across newbuilds, retrofits, and operational fleet studies.
Product overview
Houlder is a maritime design and engineering consultancy offering a portfolio of professional services centred around their proprietary Houlder Optimisation & Modelling Environment (HOME™) platform. The company provides naval architecture, engineering design, and analysis services across maritime sectors including research vessels, ferries, offshore wind, and autonomous systems. Key offerings include BOSS Level intelligent energy management, fuel efficiency solutions (ducktail technology), wind-assist propulsion systems, hybrid ferry design, EEXI compliance services, and autonomous vessel concepts. Their services span from concept development through construction oversight and in-service technical support.
Differentiator
Problem solved
Functional benefit
Brands
- HOME™: Houlder Optimisation & Modelling Environment - proprietary technology platform that combines tools, software, data and processing power for vessel optimisation and simulation.
- HOME Verify™
Products and services
- HOME™ (Houlder Optimisation & Modelling Environment) Proprietary technology platform that combines tools, software, data, and processing power into a modular environment for vessel performance optimisation, digital twin simulation, and energy-saving device evaluation, used to underpin Houlder's design and consultancy engagements.
- HOME Verify™ Independent validation service that assesses the performance claims of maritime energy efficiency technologies using HOME™ modelling capabilities.
- Naval Architecture and Marine Engineering Design Services Multidisciplinary design and engineering consultancy covering concept design, contract design, construction oversight, and in-service technical support for shipowners, operators, and governments.
- Research Vessel Design Bespoke design of scientific and polar research vessels, including hull form, mission systems integration, and operational modelling tailored to harsh-environment research requirements.
- Hybrid Ferry Design and Conversion Design and technical advisory for hybrid and battery-powered RoPax and passenger ferries, including propulsion architecture selection, energy storage integration, and yard support.
- Offshore Wind Installation Engineering Engineering of vessel-based equipment and operational systems supporting offshore wind foundation installation, including pile restraint, gripper arms, modular grillage, and autonomous maintenance vessel concepts.
- EEXI and Regulatory Compliance Advisory Modelling-driven advisory that helps vessel operators achieve EEXI, CII, and other IMO regulatory compliance, often without physical modification, through advanced hydrodynamic and CFD analysis.
- Fleet Decarbonisation and Sustainability Studies Strategic advisory establishing GHG baselines and identifying energy efficiency technologies, alternative fuels, and operational measures to decarbonise entire vessel fleets.
- Autonomous Vessel Design and Regulatory Review Design studies and regulatory gap analyses for Maritime Autonomous Surface Ships (MASS), including concept vessel design and review of physical and cyber security legislation.
- Wind-Assist and Alternative Propulsion Engineering Engineering integration of wind-assisted propulsion (rotor sails, wing sails) and alternative fuel systems (methanol, LNG) into existing and new vessels, including hazardous-area EX compliance.
- Expert Witness Services Independent expert witness work for shipyard disputes covering naval architecture evaluation, shipyard project management analysis, quantum and delay assessment, and statistical sampling.
Quantifiable outcome
- 5% verified fuel consumption reduction for Siem Shipping ducktail solution with payback measured in weeks
- +3 more outcomes
Companies that use Houlder
Customer profileNamed customers12 records
Segments5 records
Ideal customer profiles5 records
Houlder technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability9 records
Feature6 records
Houlder partnerships and signals
Strategic signalPartnerships
16 partnerships are on record, tiered core and supporting.
- Siem Shipping UKcorePartner in COMLink Design Tool project, contributing operational data from car carrier fleet and conducting in-depth studies of existing vessels.
- University of SouthamptoncoreAcademic partner in COMLink Design Tool project, supporting development of surrogate models through high-fidelity simulations.
- Blue Sea PowercoreCollaboration on development of three floating LNG-to-power barges for Greek islands. Houlder completed barge designs achieving approval in principle by Lloyd's Register.
- Lloyd's RegistercoreClass society partner for floating LNG power barge designs, providing approval in principle certification.
- Smart Green ShippingcoreLead partner in 'Winds of Change' FastRig wing sail retrofit project funded by CMDC3. Houlder provides engineering system integration and vessel performance monitoring.
- University of SouthamptoncoreAcademic partner in Winds of Change project and COMLink Design Tool project, providing world-class maritime research and high-fidelity simulations.
- Lloyd's RegistercorePartner in Winds of Change project providing classification and technical requirements oversight for wing sail installation.
- Malin GroupsupportingPartner in Winds of Change project working on installation and vessel modifications.
- Caley Ocean SystemssupportingPartner in Winds of Change project working on installation and vessel modifications.
- Argo EngineeringsupportingPartner in Winds of Change project providing engineering solutions.
- MOL DryBulksupportingPartner in Winds of Change project contributing to wing sail deployment.
- DraxsupportingPartner in Winds of Change project supporting wing sail deployment.
- Bannenberg & RowellcorePartner in Team Signal for National Flagship Project competition, contributing yacht design expertise alongside Houlder and Frazer-Nash.
- Frazer-Nash ConsultancycorePartner in Team Signal for National Flagship Project competition, providing consultancy expertise for the design competition.
- RobosyscoreCollaboration on the first large autonomous vessel review project commissioned by the Maritime and Coastguard Agency (MCA). Robosys contributed advanced robotics technology expertise for the design and operation of autonomous systems.
- Holman Fenwick Willian International LLP (HFW)coreInternational law firm partner in autonomous vessel review project, contributing maritime legal expertise and leading work on physical and cyber security legislation.
Scale indicators1 record
Recent moves6 records
Expansion highlights6 records
Houlder competitors and assessment
Company assessmentBroad incumbents
- WSP Maritime: Global professional services firm with a dedicated maritime advisory practice covering ports, coastal, and offshore engineering. Comparable for project-based maritime engineering advisory, though WSP's portfolio extends across many infrastructure sectors.
- Wärtsilä: Marine technology and services company offering engine systems, digital optimisation platforms, and decarbonisation services. Overlaps in vessel efficiency optimisation and alternative fuel system design, though primarily a hardware OEM.
- Lloyd's Register: Classification society and Houlder's project partner in several decarbonisation initiatives. Overlaps in classification-adjacent advisory and alternative fuel approval work; competing in some commercial advisory mandates.
- DNV: Major classification society that has expanded into advisory and decarbonisation consulting. Overlaps with Houlder in regulatory advisory, EEXI/CII compliance support, and alternative fuels guidance, though DNV's global scale dwarfs Houlder.
- Bureau Veritas Marine & Offshore: Classification society with a growing advisory practice covering decarbonisation, autonomous vessels, and alternative fuels. Comparable in regulatory and decarbonisation advisory but operates as part of a much broader TIC portfolio.
- Royal HaskoningDHV: Global engineering consultancy with a substantial maritime and offshore practice. Comparable for port, coastal, and offshore wind engineering work, though it operates across many sectors beyond maritime.
Direct peers
- Arup: Global engineering consultancy with maritime and offshore engineering practices. Comparable for high-complexity design and advisory work, though Arup's scope is much broader than marine alone.
- AtkinsRéalis: UK-headquartered engineering consultancy with maritime, offshore, and energy transition capabilities. Comparable for multidisciplinary engineering design across marine, offshore wind, and infrastructure projects.
- BMT Group: UK-headquartered maritime design, engineering, and management consultancy with deep naval architecture and ship design capabilities. Most directly comparable peer given similar service portfolio, UK base, and multidisciplinary maritime focus.
- Robert Allan Ltd: Specialist naval architecture firm focused on tugboats, workboats, and offshore support vessels. Comparable as a niche consultancy with strong technical reputation and bespoke vessel design expertise serving commercial and government clients.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Houlder social profiles
Digital presenceHoulder compliance and trust
Trust signalCompliance2 records
Houlder financial estimates
Financial estimateRevenue estimate
Valuation estimate
Houlder leadership team
Management profileNumber of profiles
Profiles7 records
Houlder subsidiaries and ownership
Company hierarchySubsidiaries1 record
Houlder funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Houlder 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 Houlder
What does Houlder do?
Houlder is a maritime design and engineering consultancy that conceives, designs, and delivers naval architecture, marine engineering, and technical advisory services for shipping companies, ferry operators, research institutions, offshore wind developers, and government agencies. Its work centres on a proprietary Houlder Optimisation & Modelling Environment (HOME™) platform that combines digital twin simulations, computational fluid dynamics (CFD), and AI-based analytics to optimise vessel performance, fuel efficiency, and regulatory compliance across newbuilds, retrofits, and operational fleet studies.
Is Houlder a public or private company?
Houlder is a private company. It is classified as management employee owned and is currently operating.
When was Houlder founded?
Houlder was founded in 2002. It employs 101 to 250 people.
Where is Houlder based?
Houlder is headquartered in London, United Kingdom, in the Europe region.
How does Houlder make money?
One revenue line is on record: consulting Services.
Who are Houlder's main competitors?
Broad incumbents on record are WSP Maritime, Wärtsilä, Lloyd's Register, DNV, Bureau Veritas Marine & Offshore and Royal HaskoningDHV. Direct peers are Arup, AtkinsRéalis, BMT Group and Robert Allan Ltd.
Does Houlder have an API?
No public API is recorded for Houlder.
What industry is Houlder in?
Houlder's product category is Maritime Engineering Consultancy. Its primary akta.pro industry code is IMAJAGAO, Project Management & Owner’s Engineering / Technical Consultancy (Spec Writing, Bid Support, Site Support), with a secondary code of IMAJAGAB, Hydrodynamics & Performance Engineering (Resistance, Propulsion, Seakeeping, Maneuvering). Its NAICS code is 336611 and its SIC code is 3730.