Inverlussa Marine Services

What Inverlussa Marine Services does

Inverlussa Marine Services is a family-owned workboat operator headquartered on the Isle of Mull, Scotland, providing mission-critical marine support to the Scottish salmon farming industry. The company operates a fleet of 23 purpose-built vessels (expanding to 25 by 2027) delivering services across the full aquaculture production cycle: mooring and grid installation, smolt transfer via wellboat (Isaac McKinnon, 57m, 1050m³ capacity), fish feed delivery, delousing and sea lice treatment (Camilla Eslea with the world's largest twin-line Thermolicer at 300 t/hr, plus Eloise Eslea and Isaac Eslea thermo- and hydro-delousing systems), site support, and harvest. The fleet is differentiated by pioneering hybrid propulsion adopted since 2006, IMO Tier III emissions compliance, battery storage up to 160 kWh, dynamic positioning, and ROV-based underwater inspection, with supplementary offshore wind farm support work for clients including Ørsted and SkySpecs.

Revenue is generated primarily through long-term charter contracts with major Scottish salmon farming operators (Mowi Scotland, Scottish Sea Farms, Cooke Aquaculture Scotland, Organic Sea Harvest), structured as recurring subscription-style arrangements where vessels are dedicated to specific customers. A separate sub-brand operates the Loch Spelve rope-grown mussel farm producing approximately 500 tonnes annually, distributed through the Scottish Shellfish Marketing Group to major UK supermarkets. Pricing is contractually negotiated and not publicly disclosed. Beyond aquaculture, the company has demonstrated wind farm construction support capability (Ørsted Race Bank 2.5-year contract, 2016-2019) and an ongoing autonomous drone inspection partnership with SkySpecs in German and Dutch North Sea waters.

The company is managed by the Wilson family (Ben Wilson as Managing Director, with Douglas Wilson and Helen Wilson as Directors), is privately held with no external venture capital or private equity investment, and reinvests organically into fleet expansion through partnerships with Macduff Shipyards, Nauplius Workboats, Ferguson Marine, Parkol Marine Engineering, and Damen Shipyards. It holds ISO 9001, ISO 14001, ISO 45001 certifications, RSPCA Assured delicing accreditation, Friends of the Sea sustainability certification, and has twice won Aquaculture Supplier of the Year at Aquaculture UK (2018, 2024).

Name

Inverlussa Marine Services

Legal name

Inverlussa Shellfish Company Ltd

Website

https://inverlussa.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

51–100 employees

Short description

Inverlussa Marine Services is a family-owned Scottish workboat operator running 23 purpose-built vessels delivering aquaculture support services—wellboat transfers, fish feed delivery, delousing, mooring, and site support—to major Scottish salmon farmers under long-term contracts, plus a Loch Spelve mussel farm.

Ownership category

akta.pro rank

Product category

Aquaculture Support Services

NAICS

Aquaculture (11251), Shellfish Farming (112512), Ship and Boat Building (3366)

SIC

Water Transportation (4400), Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Aquaculture Farm Services & Operations Support (net cleaning, diving, grading, harvesting) (AFAEAAAM)

akta.pro secondary industries

Aquaculture & Fish-Farm Service Vessels (Feed, Wellboats, Harvest Support) (IMAJADAF), Marine Shellfish Farming (e.g., oysters, mussels, clams) (AFAEAAAB), Aquaculture Health, Biosecurity & Veterinary Services (AFAEAAAK), Offshore Support & Marine Logistics Vessel Operators (PSV/AHTS) (TLADABAL)

Keywords

• Aquaculture support vessels
• Marine vessel charter
• Fish feed delivery
• Wellboat operations
• Sea lice treatment

Headquarters

HQ city

Craignure

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Aquaculture Support Vessel Charter: Provision of purpose-built vessels for aquaculture operations including mooring, delicing, feed delivery, site support, and harvest operations. Services delivered through long-term contracts with major salmon farming companies across Scotland's west coast, Orkney, and Shetland.
2. Mussel Farming: Rope-grown mussel cultivation in Loch Spelve producing approximately 500 tonnes annually, sold through the Scottish Shellfish Marketing Group to major UK supermarkets and local hospitality.
3. Fish Feed Delivery: Feed logistics services delivering fish feed across the west coast of Scotland and Orkney for major salmon farming companies and feed suppliers using leased and owned purpose-built vessels.
4. Offshore Renewables Support: Vessel charter services supporting offshore wind farm operations including construction phase support, equipment transfers, anchor handling, guard duties, and drone-based turbine inspections.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Inverlussa Marine Services operates a fleet of 23+ purpose-built vessels providing aquaculture support services across Scotland and selected offshore renewable energy markets. Core offerings include wellboat operations (smolt transfer and harvest), fish feed delivery logistics, sea lice delicing/treatment, mooring and grid installation, and offshore wind farm support. The company also operates a mussel farming sub-brand producing approximately 500 tonnes annually from Loch Spelve on the Isle of Mull.

Product overview

Inverlussa Marine Services operates as an integrated marine services company providing comprehensive support to the aquaculture industry through a diversified fleet of 23+ purpose-built vessels. The company offers a modular portfolio of services including: Wellboat operations (Isaac McKinnon - 57m vessel with 1050m3 capacity for smolt transfers and harvesting); Fish Feed Delivery (Kallista Helen, Margaret McKenzie, Havgull, Havilah and other dedicated vessels); Delicing/Treatment services (Camilla Eslea - 35m Thermolicer vessel, Eloise Eslea, Isaac Eslea hybrid treatment vessels); Mooring and Grid installation/maintenance; and general Aquaculture Support across the full production cycle. The company pioneered hybrid vessel technology in Scottish aquaculture and continues to expand its fleet with new battery-hybrid vessels. Additionally, the company operates a mussel farming sub-brand producing 500 tonnes annually in Loch Spelve.

Differentiator

Problem solved

Functional benefit

Products and services

• Wellboat Services Fish transport and transfer services using purpose-built wellboat vessels with RSW (Refrigerated Sea Water) systems, smolt counters, grading tables, and pressure loading/unloading capabilities for salmon transfers between sea lochs and open sea pens. Used by salmon farming operators for smolt transfer and harvest operations.
• Fish Feed Delivery Feed delivery services across the west coast of Scotland and Orkney for major salmon farming companies and feed suppliers. Fleet includes purpose-built feed delivery vessels (Kallista Helen, Margaret McKenzie, Havgull, Havilah) with self-loading/discharge capabilities, enclosed holds, and cargo capacities up to 400 tonnes.
• Delicing and Sea Lice Treatment Services Sea lice treatment services using physical delicing vessels operating to RSPCA Assured salmon welfare standards. Features state-of-the-art Thermolicer (Camilla Eslea, 300 t/hr throughput) and Hydrolicer delicing equipment (Eloise Eslea, Isaac Eslea). Provides treatment operations for salmon farms across Scotland.
• Mooring and Grid Services Full grid installations, barge installations, topside inspections, and general site support work for salmon farming operators. Uses purpose-built mooring vessels equipped with modern tools and ROVs (Remotely Operated Vehicles) for underwater viewing without diver deployment. Compliant with Scottish Technical Standard.
• Offshore Renewables Support Support services for offshore wind farms including equipment transfers, anchor handling, guard duties, ROV survey operations, and drone-based turbine inspection support. Previously supported Ørsted's Race Bank wind farm (2.5-year contract) and SkySpecs drone operations in German and Dutch North Sea sectors.
• Inverlussa Mussel Farm Award-winning rope-grown mussel cultivation operation in Loch Spelve, Isle of Mull (Grade A water classification). Producing approximately 500 tonnes annually for over 20 years, sold through the Scottish Shellfish Marketing Group to major UK supermarkets including Waitrose, M&S, Tesco, Sainsbury's, Morrisons, Asda, Lidl, and Aldi, plus local hospitality. Friends of the Sea sustainable accreditation.
• Grace Lamont (Aquaculture Service Vessel Charter) 25m aquaculture service vessel available for charter with latest SHM deck mooring equipment, bollard pull 21.8 tonnes, hybrid battery technology (130kWh), and full IMDG approval for peroxide carriage. Suitable for mooring, feed delivery, and aquaculture site support work.
• Helen Mary (Multi-purpose Support Vessel Charter) 28m triple screw multi-purpose support vessel (BV classed, MCA Cat 0 - Unrestricted Navigation) with accommodation for 14 persons. Suitable for supply, dive support, survey, towing, anchor handling, cargo, and marine support operations. Deployed for offshore wind farm support and marine survey projects.

Quantifiable outcome

• Reduced fuel consumption and emissions through hybrid technology adoption
• +3 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

Feature6 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• Macduff ShipyardscoreStrategic or Co-development Partner · 1 January 2026Long-standing shipbuilding partnership spanning 13 years with over 10 vessels built. Most recent collaboration on Naomi Jennifer hybrid aquaculture support vessel. New orders placed for 20m heavy service catamaran. Vessels designed by Macduff Ship Design in close collaboration with Inverlussa.
• Nauplius WorkboatscoreStrategic or Co-development Partner · 1 January 2026Dutch shipyard partnership for hybrid aquaculture vessels including Eloise Eslea, Isaac Eslea, and Camilla Eslea. Fifth vessel under construction - a 25m x 10.6m heavy service vessel. Vessels feature battery-hybrid capability and next-generation delousing systems.
• Parkol Marine EngineeringminorStrategic or Co-development Partner · 1 January 2026First-time partnership for construction of 27m fish feed carrier with 400-tonne hold capacity, named Margaret McKenzie. Designed by Macduff Ship Design.
• Macduff Ship DesigncoreTechnology or Integration · 1 January 2024Design partnership for all new vessel projects including hybrid vessels, heavy service catamarans, and feed carriers. Close collaboration to ensure vessels meet Inverlussa's operational requirements.
• SkySpecsminorStrategic or Co-development Partner · 1 January 2024Partnership for providing support vessel Helen Mary for autonomous drone operations conducting wind turbine structural inspections in German and Dutch North Sea sectors.
• Salmon ScotlandminorGTM or Marketing Partner · 1 January 2024Industry trade body representing Scottish salmon farmers. CEO Tavish Scott commented on Inverlussa's vessel investment programme, affirming confidence in Scottish aquaculture.
• Ferguson Marine (Port Glasgow)coreStrategic or Co-development Partner · 1 January 2021Scottish shipyard partnership for vessels Helen Rice (2020) and Kallista Helen (2021). Both vessels built at Port Glasgow facility. Helen Rice officially named at ceremony by Camilla Wilson, wife of Managing Director.
• Mowi ScotlandcoreChannel Partner/ Reseller/ Distributor · 1 January 20215-year contract to build and operate a 35m x 14.5m vessel housing a twin line Thermolicer for sea lice treatment. Largest vessel to date, strengthening existing partnership.
• Scottish Shellfish Marketing GroupcoreChannel Partner/ Reseller/ DistributorCo-operative based in Bellshill near Glasgow that distributes Inverlussa's mussels to major UK supermarkets including Waitrose, M&S, Tesco, Sainsbury's, Morrisons, Asda, Lidl, and Aldi.
• ØrstedminorChannel Partner/ Reseller/ DistributorOffshore wind developer for whom Helen Mary completed 2.5-year contract during Race Bank offshore wind farm construction phase from 2016 to 2019.
• Partrac LtdminorStrategic or Co-development PartnerSupported Partrac's marine survey projects in the Sound of Islay, West Islay, and Kylerhea, deploying and retrieving ADCPs in challenging high tidal stream conditions.
• Stream Marine CareersminorImplementation/ SI/ Consulting PartnerTraining partner for Inverlussa's cadetship programme. Handles initial screening and interviews for deck and engineering cadetships. Ensures academic progress during the 3-year programme.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Brønnbåt Nord AS: Norwegian operator of wellboats and aquaculture service vessels, including delousing and fish transport services. Comparable offering to Inverlussa's Eloise Eslea / Isaac Eslea hybrid treatment vessels and Isaac McKinnon wellboat.
• Stranda Prolog AS: Norwegian family-owned aquaculture logistics company operating wellboats and service vessels for salmon farmers. Comparable business model to Inverlussa — purpose-built vessels, recurring contracts with salmon farmers, focus on fish welfare and live haul.
• AquaShip AS: Norwegian wellboat owner-operator serving Norwegian and international salmon farming customers. Directly comparable in live fish transport (smolt and harvest), with similar hybrid and emissions-reduction fleet investments.
• Sølvtrans ASA: World's largest wellboat owner-operator with a fleet of ~30 vessels serving Norwegian, Scottish, and Chilean salmon farmers. Directly comparable to Inverlussa in wellboat and aquaculture support services, but at materially larger scale and publicly listed.

Broad incumbents

• Mowi ASA: World's largest Atlantic salmon farmer, with internal logistics and increasingly external vessel procurement. As Inverlussa's largest customer (5-year Thermolicer contract), Mowi is a strategic anchor — and a potential long-term risk if it internalizes more marine services.
• AKVA Group ASA: Listed supplier of aquaculture technology and service vessels (cages, feeding systems, cameras, software, and complete vessels including wellboats and feed barges). Broader portfolio than Inverlussa, but directly comparable vessel engineering and sea-based technology offering.
• Cooke Aquaculture Scotland: Scottish salmon farming subsidiary of Cooke Inc. (Canada). Currently a long-term Inverlussa customer for delousing and site services; comparable vertically integrated salmon farming footprint with marine services demand profile similar to Mowi.

Emerging players

• Nordlaks Oppdrett AS: Vertically integrated Norwegian salmon farmer with significant in-house vessel fleet (wellboats, service vessels, feed carriers). Compares to Inverlussa as a salmon-farming customer with internal marine services capability; partial competitive overlap.
• Cflow AS: Norwegian provider of live fish handling systems for wellboats (counting, grading, transfer). Indirect overlap with Inverlussa's wellboat product feature set (Wingtech, Aquascan, Vaki counters, Stranda vacuum pumps) but supplies technology rather than operating vessels.

Others

• Optimar Stette AS: Norwegian supplier of processing equipment for seafood and aquaculture, including fish handling and grading systems used on board wellboats. Technology supplier adjacent to Inverlussa's wellboat operations rather than a direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key highlights7 records

Customer concentration

• Xx.com/inverlussas
• Facebookfacebook.com/inverlussa
• LinkedInlinkedin.com/company/inverlussa-marine-services

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 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 Inverlussa Marine Services