What MintMech Specialist Engineers does

MintMech Specialist Engineers (legally MintMech Limited, company number 11544270) is a UK-based specialist engineering firm founded in 2018 in Penryn, Cornwall, by directors Laurie Thornton and Jack Berryman. The company delivers turnkey design, build, and commissioning packages for the offshore wind, marine construction, geotechnical drilling, and subsea engineering industries, operating internationally across the UK, Europe, Japan, USA, Singapore, and Chile. As of 2024 the firm employs approximately 12 engineers and is expanding into a new Automation, Manufacturing and Engineering Centre (AMEC) facility funded through the UK Shared Prosperity Fund.

The product portfolio combines proprietary specialist equipment and engineered solutions. Proprietary products include the Active Heave Assist (AHA) heave compensation system launched in 2025 (retrofit-friendly, achieving less than 10cm drill-bit motion in real-world conditions), the MMIRN MK2 Iron Roughneck for automated pipe handling, the JackLad 650 CTV boarding ladder (recognised by IJUBOA as a best-practice access solution), the MM RTH MK3 Remote Tool Handler for semi-automated downhole tooling, Subsea Drill Pipe Clamps rated to 700 bar, and a 5t DNV-compliant Launch and Recovery System. Engineered solutions cover jack up barge systems and upgrades, bespoke pile gates, marine deck spreads, large diameter drilling systems, and full geotechnical drilling services. Several products carry DNV class-approval.

Revenue is generated through two streams: turnkey design-build-commission packages and consulting/technical services (project management, training, third-party evaluation, tender review). Pricing is quote-based and project-specific; nothing is publicly listed. Customers are enterprise-scale operators, including Ørsted (Hornsea 3), Geoquip Marine Operations AG, JOGMEC (Japan Oil, Gas and Metals National Corporation), Red7Marine, Workfloat (Tow Work Float Ltd), Gravity Mining, and Portland Harbour. The firm has received grant funding from the UK Shared Prosperity Fund and the Crown Estate's Supply Chain Development Fund, and was invited to 11 Downing Street by Chancellor Rachel Reeves in 2025. No private equity or venture capital involvement is disclosed.

Name

MintMech Specialist Engineers

Legal name

MintMech Limited

Website

https://mintmech.com

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

1–10 employees

Short description

MintMech Specialist Engineers is a UK-based, founder-led engineering firm delivering turnkey design, build, and commissioning services for offshore wind, marine construction, geotechnical drilling, and subsea clients. The 12-engineer team operates internationally with proprietary specialist equipment and in-house manufacturing.

Ownership category

akta.pro rank

Product category

Marine Engineering Services

NAICS

Mining and Oil and Gas Field Machinery Manufacturing (33313), Support Activities for Mining (213)

SIC

Services-Engineering Services (8711), Construction Machinery & Equip (3531), Oil & Gas Field Services, Nec (1389)

akta.pro primary industry

Offshore Wind Substructures & Marine Engineering (Monopiles, Jackets, Floating) (EUAMACAE)

akta.pro secondary industries

Marine & Offshore Wind BOP Construction (Foundations, Cables, Ports, Installation Support) (EUAMAFAI), Wind Power Plant EPC (Onshore/Offshore) (EUAEAAAF)

Keywords

• Offshore engineering services
• Marine construction equipment
• Geotechnical drilling systems
• Subsea engineering solutions
• Offshore wind engineering

Headquarters

HQ city

Penryn

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Turnkey Design, Build, Commission Packages: MintMech provides end-to-end engineering solutions covering design, in-house manufacturing, and commissioning. The company collaborates with clients from initial design through to final commissioning, offering bespoke equipment and operational support for offshore wind, marine construction, geotechnical drilling, and subsea industries.
2. Consulting and Technical Services: Professional services including consulting, project management, training, technical support and compliance services. Also covers third-party evaluation, tender review, and operational consultancy.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

MintMech provides turnkey design, build, and commissioning packages for complex offshore engineering challenges in offshore wind, marine construction, geotechnical drilling, and subsea industries. The firm combines bespoke specialist equipment (such as Active Heave Assist, Iron Roughneck, JackLad 650, and Remote Tool Handler) with engineered solutions, professional consulting, project management, training, technical support, and compliance services delivered through in-house manufacturing.

Product overview

MintMech Specialist Engineers is a specialist engineering firm offering turnkey design, build, and commissioning services for the offshore wind, marine construction, geotechnical drilling, and subsea industries. The company's product portfolio comprises both specialist automated equipment and engineered solutions: Iron Roughneck (MMIRN MK2) for automated pipe handling; JackLad 650 for vessel access systems; Remote Tool Handler (MM RTH MK3) for downhole tooling automation; Active Heave Assist (AHA) for vessel motion compensation; 5t DNV Launch and Recovery System (LARS); and Subsea Drill Pipe Clamps. These are complemented by engineering solutions including Jack Up Barge Systems, Pile Gates, Marine Deck Spreads, Large Diameter Drilling Solutions, and Geotechnical Drilling Services. The company operates from Penryn, Cornwall with international project delivery.

Differentiator

Problem solved

Functional benefit

Brands

• Active Heave Assist (AHA): Ultra-precise, retrofit-friendly heave compensation system for offshore drilling and floating wind turbine anchor installation, enabling less than 10cm motion of the drill bit in real-world conditions.
• JackLad 650
• MMIRN MK2 Iron Roughneck
• MM RTH MK3 Remote Tool Handler

Products and services

• Iron Roughneck (MMIRN MK2) Remotely-operated iron roughneck designed to connect and disconnect segments of pipe on geotechnical offshore drilling rigs. Engineered in accordance with DNV with bespoke steel design and custom control system, featuring torque capability against power swivel, full safety interlocking without PLC, and compact design for single and twin mast geotech rigs.
• JackLad 650 CTV jack up ladders permitting safe access and egress from crew transfer vessels (CTVs) to offshore structures. Features a unique shock absorption system, 9m operational range with 12 positions, and a fully raised position for safe floating transit. Recognised by the International Jack Up Barge Operators Association (IJUBOA) as a 'best practise access solution'.
• Remote Tool Handler (MM RTH MK3) Semi-automated electro-hydraulic system for handling downhole tooling with minimal operator intervention. Features wireless remote control, manual backup control, and electrical positioning monitoring that combines with drill position for full interlocking. Zero fabrication installation enables mounting onto drill derrick within 2 days.
• Active Heave Assist (AHA) Retrofittable active heave compensation system designed to improve geotechnical drilling performance of existing assets. Enables less than 10cm vessel motion compensation, maintaining drill bit stability relative to seabed. Retrofits to existing passive systems without overhaul. Supports downhole logging, soft-ground sampling, off-bottom work and enables MintMech's Automatic Weight On Bit (AWOB) system.
• 5t DNV Launch and Recovery System (LARS) Self-erecting mast launch and recovery system designed in accordance with DNV. Combines integrated control system and hydraulic power unit with ease of maintenance design. Fits high-cube ISO container gauge for straightforward transport. Well suited to geotechnical tool deployment.
• Subsea Drill Pipe Clamps Seabed frame mounted electro-hydraulically powered drill pipe clamps engineered for the harshest deep sea environments. Designed for operation exposed to moving drill string, drill bit and drill cuttings. Various drill string diameter options available with emergency release or clamp functions.
• Jack Up Barge Systems Complete range of jack up barge support including barge conversion and jack up design, jacking system upgrades, access and safety systems (including JackLad), and operational consultancy. Covers structural, mechanical, control system and marine engineering for projects internationally.
• Pile Gates Bespoke piling gates for marine construction including multilevel access and gripper arrangements. Supports installation of wind turbine monopiles, jackets, jetties and bridge structures. Includes pile manipulators, handling systems, temporary works and sea fastenings.
• Marine Deck Spreads Deck spread design services focusing on operational efficiency, equipment interaction, crew movement and workflow. Includes seafastenings meeting class requirements, winch bases, bolt patterns for rapid reconfiguration, and services routing for flush deck layouts.
• Large Diameter Drilling Solutions Specialist large diameter drilling systems covering subsea, pile top, reverse circulation and XL (>6m) diameters. Services include methodology development, design/build/commission packages, technical advice, and spoil management systems including air lifting, reverse-circulation and dredge pump-based handling.
• Geotechnical Drilling Services Marine geotechnical drilling and sampling services for offshore wind, oil and gas, and marine construction projects. Includes client representation, maintenance management, equipment upgrades, and mobilisation support. Ultra-deep geotechnical exploration expertise including JOGMEC project in Japan.

Quantifiable outcome

• Active Heave Assist enables less than 10cm motion of drill bit in real-world conditions
• +4 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature6 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Red7MarinecoreStrategic or Co-development PartnerLong-term client and collaboration partner on multiple marine construction projects. Jointly developed pile gates for Portland Harbour, temporary works grillage for Rendsburg bridge, and artificial nesting structures for Hornsea 3 offshore wind farm. Red7Marine engaged MintMech for design, build and commission of specialist marine construction equipment.
• Combifloat Systems B.V.coreStrategic or Co-development PartnerCollaboration on the Rendsburg temporary works grillage project for a new road bridge across the Kiel Canal in Germany. MintMech worked alongside Combifloat and Red7Marine to develop structural design of a grillage platform to maximise the capacity of a C7 cantilevered pontoon.
• JOGMEC (Japan Oil, Gas and Metals National Corporation)coreStrategic or Co-development PartnerOngoing technical support, maintenance, management and equipment upgrades for JOGMEC's pioneering ultra-deep geotechnical exploration project in Japan. MintMech has been engaged in this project for more than a decade, combining expertise in turnkey equipment supply and engineering consultancy.
• Gravity MiningminorStrategic or Co-development PartnerDesign study engagement with the Redruth-based Gravity Mining to determine stress and deflections of the main foundation sections of the C902 Multi Gravity Separator chassis, optimising construction and logistical impact. Worked with MetalCraft Cornwall as manufacturer.
• Geoquip Marine Operations AGcoreStrategic or Co-development PartnerContracted by Geoquip Marine to supply a remote tool handling system for safe deployment of down-hole sampling tools on a geotechnical offshore installation. Designed bespoke electro-hydraulic system with wireless remote control and full interlocking for improved personnel and operational safety.
• Workfloat (Tow Work Float Ltd)coreStrategic or Co-development PartnerLong-term engineering partnership providing naval architecture and engineering expertise for self-propelled floating work platforms. Workfloat vessels are now in their third generation, developed by Tow Work Float Ltd with MintMech's engineering expertise. Partnership has expanded to include ScaffFloat pontoon and workboat systems made from scaffolding.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Red7Marine: UK marine contractor providing jack-up barges and marine construction services for nearshore and offshore wind projects. Existing MintMech client with overlapping marine construction and jack-up barge expertise serving the same UK and European customer base.
• Osbit: Northumberland-based specialist offshore engineering firm designing bespoke equipment for offshore wind, subsea and marine construction. Closest UK peer by company size, geography and bespoke equipment portfolio for offshore wind installation.
• Huisman: Dutch global manufacturer of specialist offshore equipment including heave-compensated cranes, drilling equipment and offshore wind installation tools. Directly comparable through offshore handling and heave compensation product lines that compete with AHA and MintMech's offshore handling portfolio.
• IHC IQIP: Specialist supplier of offshore foundation equipment including pile-driving hammers and subsea installation tools. Directly comparable through marine construction equipment, pile-handling products and offshore wind foundation installation focus.
• TWD (Technische Werktuigbouwkunde & Design): Dutch offshore engineering consultancy providing bespoke equipment design, installation engineering and method statements for offshore wind, oil and gas. Closely comparable consulting-and-engineering business model serving the same offshore wind and marine construction client base.
• Combifloat Systems B.V. Dutch manufacturer of modular pontoons and jack-up work platforms for marine construction, nearshore and offshore wind installation. Existing MintMech partner from Rendsburg project, with overlapping marine construction and jack-up barge capability.

Broad incumbents

• MENCK (subsidiary of IHC): Specialist supplier of offshore foundation installation equipment including hydraulic hammers for monopile installation. Competes in offshore wind foundation installation, the same downstream market that MintMech's pile gates and marine construction products serve.
• Enerpac Heavy Lifting Technology: Global provider of heavy lifting and heave compensation systems, including offshore cranes and load-handling equipment used in marine and offshore wind installation. Competes in the offshore handling and heave compensation segment that MintMech's AHA and LARS products address.
• Van Oord: Dutch marine contractor executing offshore wind foundation, cable and subsea installation projects globally. Indirectly comparable as a major customer-side buyer of bespoke engineering services, pile gates and marine construction equipment of the type MintMech designs.

Emerging players

• Fistuca: Dutch developer of the BLUE Hammer, an active heave-compensated pile-driving technology. Direct technology overlap with MintMech's AHA system in the offshore wind foundation installation heave compensation space.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/mintmech-specialist-engineers

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 MintMech Specialist Engineers