What Manor Marine does

Manor Marine UK Limited is a Portland, Dorset-based shipbuilding and marine engineering firm (founded 1981; 51-100 employees) operating from a single integrated shipyard at Portland Port Business Centre under the ownership of OEG Offshore. The company constructs vessels up to 40 metres in length and 450 tonnes in weight in both steel and aluminium, with named product lines spanning crew transfer vessels (CTVs), work boats, passenger vessels, multi-purpose vessels, work barges, office barges, and unmanned surface vessels. Underlying capabilities are concentrated in a fixed physical footprint: a 55m x 52m main undercover workshop with 10-tonne gantry cranes, an 80-tonne synchrolift, two open slipways rated to 40m / 350 tonnes / 20m beam, a custom hydraulic launch pad, 200 metres of berthing at a minimum 4m low-water depth, plus dedicated cable storage with four bullrings (8m/10m/13m/18m diameter, 3.2m height) for offshore wind inter-array and export cables up to 240mm diameter.

The business generates revenue through four streams: new-build vessel construction (project-based, one-off contracts such as the Mainprize MO9 26m Supa-Swath catamaran, Hybrid Chartwell Ambitious Class 25.2m CTVs, Chartwell Brevity Class 27.8m CTV, and ZeroUSV Oceanus17 USV); repair and refit services (dry-dock refits, wet dock, slipway maintenance); engineering services (welding, fabrication, mechanical/electrical, sea-fastenings, installation project management); and cable storage for offshore wind installations. Pricing is project-specific and quote-based with no public pricing, and the company does not sell software, APIs, or digital products.

Commercial model is direct enterprise sales with no intermediaries: clients contract the Portland yard directly. The customer base is concentrated in offshore wind and marine services (OEG Renewables, Mainprize Offshore, Manor Renewable Energy, Jenkins Marine, Aquatic Towage & Marine, ZeroUSV), supplemented by tourism/refit (Dorset Pleasure Cruises, Stuart Line Cruises), education (University of Southampton), and government (Ascension Island Government). Strategic positioning rests on a 2022 Memorandum of Understanding with Chartwell Marine for sustainable vessel design co-development and inclusion in the OEG Offshore group, with ISO 9001, 14001, and 45001 certifications supporting enterprise procurement requirements. The company holds no patents, operates no APIs, and discloses no AI/ML capability.

Name

Manor Marine

Legal name

Manor Marine UK Limited

Website

https://manormarine.co.uk

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Manor Marine UK Limited is a Portland, Dorset shipbuilder (owned by OEG Offshore) that constructs steel and aluminium vessels up to 40 metres for the offshore wind, marine services, tourism, and government sectors, and provides repair, refit, engineering, and offshore wind cable storage services from its Portland Port shipyard.

Ownership category

akta.pro rank

Product category

Shipbuilding and Marine Vessel Construction

NAICS

Ship Building and Repairing (336611)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Landing Craft & Amphibious Workboats (LCM/LCT-style, Beaching Craft) (IMAJADAK)

akta.pro secondary industries

Marine Outfitting & Interior Refurbishment (TLAKAKAL), Piping, HVAC & Auxiliary Systems Repair (TLAKAKAH), Naval & Government Vessel Maintenance & Modernization (TLAKAKAB), Project Management & Owner’s Engineering / Technical Consultancy (Spec Writing, Bid Support, Site Support) (IMAJAGAO)

Keywords

• Shipbuilding services
• Vessel construction
• Marine engineering
• Ship repair refit
• Offshore wind vessels

Headquarters

HQ city

Weymouth

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Vessel Construction: New vessel construction services for crew transfer vessels, work boats, passenger vessels, barges, and multi-purpose vessels. Projects include bespoke builds for offshore wind industry with specifications ranging from 17m to 36.5m vessels.
2. Repair and Refit Services: Dry-dock refits, wet dock maintenance, slipway repairs, and emergency repair services for various vessel types including high-speed catamaran ferries, tugs, tankers, cable ships, and windfarm service vessels.
3. Engineering Services: Electrical and mechanical engineering, welding and fabrication, design and fabrication of sea-fastenings, installation project management, with specialist workforce including welders, fabricators, fitters, electricians, machinists and carpenters.
4. Cable Storage: Custom-built facility for rapid unloading and storage of export and inter-array cables for offshore windfarms, with hydraulically operated reel system for quick cable retrieval.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Manor Marine is a shipbuilding and marine engineering company that constructs new vessels in steel and aluminium up to 40 metres in length and 450 tonnes in weight, and provides repair, refit, maintenance, engineering and cable storage services from its Portland, Dorset shipyard. The company primarily serves the offshore renewables industry with crew transfer vessels and support vessels, alongside marine services operators, passenger vessel operators, and government clients requiring specialised marine craft.

Product overview

Manor Marine is a shipbuilding and marine engineering company offering a unified portfolio of vessel construction, repair and refit, engineering services, and cable storage facilities. The core vessel construction service handles vessels up to 40 metres in both steel and aluminium, while the vessel portfolio spans work boats, passenger vessels, multi-purpose vessels, maintenance vessels, work barges, and office barges. The company operates specialist facilities including slipways, synchrolift, undercover workshops, and dedicated cable storage with bullrings for offshore wind applications. Notable named vessel products include the Chartwell Brevity Class CTV, Hybrid Chartwell Ambitious Class CTV, Mainprize MO9, 20 Metre Multi Purpose Vessel, ZeroUSV Oceanus17, and Ascension Island Government Cargo Barge. The company primarily serves the offshore renewables industry with crew transfer vessels and support ships.

Differentiator

Problem solved

Functional benefit

Products and services

• Vessel Construction Specialist craftsmanship in the construction and remedial works of multiple vessel types up to 40 metres in length and 14m breadth in both steel and aluminium, supported by in-house engineering services and extensive quay space. Serves offshore wind operators, marine service companies, passenger vessel operators and government clients.
• Repair and Refit Essential repair and maintenance services including dry-dock refits, wet dock services, and slipway maintenance for all vessel types including high-speed catamaran ferries, tugs, tankers, cable ships, and windfarm service vessels to maximise vessel lifespan.
• Engineering Services Comprehensive engineering services including electrical and mechanical engineering, welding and fabrication, sea-fastening solutions, design and fabrication of equipment sea-fastenings, and installation project management with a specialist workforce of welders, fabricators, fitters, electricians, machinists and carpenters.
• Cable Storage Custom-built cable facility for rapid unloading and storage of export and inter-array cables for offshore windfarms, with four bullrings of diameters 8m, 10m, 13m and 18m (all 3.2m in height) and a hydraulically operated reel system supporting cables up to 240mm diameter.
• Berthing and Slipping Facilities Comprehensive shipyard facilities including hydraulic launch pad for vessels up to 40m, two open slipways for vessels up to 40m length/350 tonnes weight/20m beam, 80 tonne synchrolift, and 200 metre secure berthing with 4m minimum depth and shore power access.
• Chartwell Brevity Class Crew Transfer Vessel 27.8 metre aluminium crew transfer vessel with 9.4m beam, featuring enhanced manoeuvrability and stability, capacity for 32 personnel, Tier III NOx reduced Quad Volvo IPS900 drives, and minimum speed exceeding 25 knots at 100% power. Bureau Veritas classified.
• Hybrid Chartwell Ambitious Class Crew Transfer Vessels 25.2 metre aluminium catamaran hybrid crew transfer vessels with twin marine diesel engines, electric motors, batteries and fixed pitch propellers for reduced emissions operation. Capacity for 24 passengers plus 4 crew accommodation in two 2-berth cabins.
• Mainprize MO9 Supa-Swath Catamaran 26-metre Supa-Swath catamaran designed by Walker Marine Design with 40 tonne cargo capacity, seating for 24 passengers, 175m2 of deck space, and maximum speed of 27 knots. Built for Mainprize Offshore as the seventh crew transfer vessel constructed by Manor Marine.
• 20 Metre Multi Purpose Vessel 20 metre all welded steel multi-purpose vessel suitable for dive support, subsea cable support, towage, buoyage maintenance, marine civil engineering and dredge support. Volvo Penta D13-MH engines, 20 tonne cargo capacity, 12 tonne bollard pull, built to Lloyd's Register Regulations and MCA Workboat Code CAT 2.
• ZeroUSV Oceanus17 Uncrewed Surface Vessel 17 metre uncrewed surface vessel (USV) built for ZeroUSV, sister vessel to the proven Oceanus12 fleet, delivering increased endurance, payload, and seakeeping for autonomous marine operations.
• Ascension Island Government Cargo Barge 17 metre self-propelled cargo-carrying barge for Ascension Island Government, commissioned for shipping and use in Ascension Island waters. Fifth barge of this class built by Manor Marine, funded by the FCDO International Programme.
• Work Boats Multi-purpose work boat builds for the offshore industry including wind farm service vessels, workboats, and offshore support vessels.
• Passenger Vessels Bespoke passenger vessels including river cruise vessels and seafaring catamarans, ranging from refurbishments to new construction for tourism and cruise operators.
• Multi-Purpose Vessels Strong, hardworking and versatile vessels suitable for a range of industries including anti-pollution, barge, and general multi-purpose applications.
• Maintenance Vessels Multi-purpose support vessels designed for specific roles including river maintenance, repair of moorings, dive support operations, laying buoys, plough dredging, anti-pollution, and wreckage hauling.
• Work Barges Work barges and wide beam tugs for river and canal transport, designed as dredging units and general work stations with hydraulic cranes, spudlegs, bow thrusters, and excavators.
• Office Barges Commercial office barges constructed in steel with classic wooden interiors, complete with masts, spars, rigging, furled sails, lee boards and deck equipment, providing modern open plan office space and accommodation.

Quantifiable outcome

• Delivered MO9 vessel as seventh crew transfer vessel constructed by Manor Marine with 24 passenger capacity, 175m2 deck space, 40 tonnes cargo capacity
• +2 more outcomes

Named customers11 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

Two partnerships are on record, tiered core.

• Chartwell MarinecoreStrategic or Co-development Partner · 18 May 2022Memorandum of Understanding between Manor Marine and Chartwell Marine to develop a mutually beneficial relationship for sustainable next-generation vessel design. The partnership combines Manor Marine's shipbuilding expertise with Chartwell Marine's naval architecture capabilities, focusing on innovative vessel designs for the offshore renewables sector. Multiple joint vessel projects have resulted from this collaboration, including hybrid CTVs and the Chartwell Brevity Class.
• OEG OffshorecoreOthersManor Marine UK Ltd is identified as an OEG Offshore Company. This indicates OEG Offshore is the parent company/group of Manor Marine.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Wight Shipyard Co: UK small shipyard on the Isle of Wight building fast ferries, passenger vessels, and small commercial craft in aluminium and steel. Comparable in scale and product mix (small commercial vessels, ferries, workboats) to Manor Marine's portfolio.
• A&P Group: UK ship repair, conversion, and construction group operating yards at Falmouth, Tyne, and Dover. Directly comparable as a UK multi-site shipyard offering slipping, repair, and vessel construction for commercial, naval, and offshore customers.
• Cammell Laird: UK shipyard in Birkenhead offering vessel construction, repair, and refit services for commercial, naval, and offshore clients. Directly comparable as a UK-based mid-size shipbuilder serving similar vessel classes and marine services customers.
• McTay Marine: UK small-to-mid shipbuilder based in Merseyside constructing workboats, patrol vessels, and offshore support vessels up to ~50m. Directly comparable in scale, product range (workboats/CATs/CAT support), and customer segments (marine services, government, offshore).

Broad incumbents

• Damen Shipyards: Large Dutch global shipbuilding group with a broad portfolio including workboats, tugs, patrol vessels, and offshore support vessels. A broader incumbent competing in many of the same vessel categories (CTV, workboat, multi-purpose) but at significantly greater scale and with global reach.
• Harland & Wolff: Historic large UK shipyard offering vessel construction, repair, and offshore wind fabrication services. A broader incumbent with similar UK-based shipbuilding and offshore renewables exposure but at a larger scale, including major fabrication contracts for offshore wind structures.
• Astilleros Armón: Spanish shipbuilding group building CTVs, workboats, tugs, fishing vessels, and offshore support vessels. A broader European incumbent competing directly in the CTV and small-craft segments that Manor Marine targets.

Others

• Mainprize Offshore: UK offshore wind CTV operator and anchor customer of Manor Marine (MO8, MO9 builds). Functions as an adjacent ecosystem participant—operating the vessels Manor Marine builds—and a key reference customer that validates Manor's CTV build capability.
• OEG Renewables: Offshore wind services subsidiary of Manor Marine's parent OEG Offshore. Functions as both an anchor customer (vessel slipping and maintenance contracts) and an adjacent ecosystem participant in the same offshore wind value chain.

Emerging players

• Chartwell Marine: UK-based naval architecture firm specialising in offshore wind CTV design (Brevity, Ambitious classes). Strategic design partner to Manor Marine under the 2022 MoU, with overlapping customer base in offshore renewables and directly comparable vessel designs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/manormarine
• LinkedInlinkedin.com/company/manor-marine-uk-limited
• Instagraminstagram.com/manormarineltd
• Xx.com/manormarineltd

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 Manor Marine