What Offshore Supply does

Offshore Supply operates an e-commerce marine chandlery platform under the trading name of Mrs JC Altham & Sons (Lancaster) Ltd, a private limited company incorporated in England (company number 842815) and headquartered at Anchor Building, Penrod Way, Heysham, Lancashire. The company sells marine cleaning chemicals (notably Unitor, Hadex, Nalfleet, and Gamazyme product lines), deck hardware, marine engine spares, marine tapes including SOLAS reflective tape, welding consumables such as bronze brazing rods and Unitor welding electrodes, and specialised products including Richter tank dipping tapes and FuelClear M15 fuel biocide. It positions itself as an industry-leading ship chandler serving commercial vessels, private yachts, platform supply vessels, coastal workboats, tankers, drilling platforms, and the broader offshore industry including wind farms.

The technology layer is a standard WooCommerce-based online storefront at offshoresupply.co.uk with no proprietary platform, no public APIs, no SDKs, and no documented developer integrations. The website supports customer accounts, wishlists, and a newsletter opt-in, and is supplemented by an extensive content marketing blog (20+ pages covering ship classification, fuel care, maritime cleaning workflows, flag etiquette, nautical terminology, naval history, and sailing destinations) used to drive organic search traffic. Pricing is unit-based in British Pound Sterling excluding VAT, with all prices visible on the storefront and product-level sample values ranging from £31.57 (Marine Spray Stop Tape) to £783.00 (FuelClear M15 Fuel Biocide).

The business model is transactional one-off product sales with no subscription or recurring component. Orders are processed through the website for Mainland UK delivery, with separate manual freight quotes for Northern Ireland and Republic of Ireland enquiries via [email protected], and additional international and UK port delivery channels for commercial vessel supply. The company offers a 30-day money-back guarantee and SSL-secured checkout. It is independently owned by the Altham family with no disclosed external investors, parent company, or institutional capital involvement, and operates with a team of 1-10 employees.

Name

Offshore Supply

Legal name

Mrs JC Altham & Sons (Lancaster) Ltd

Website

https://offshoresupply.co.uk

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

Offshore Supply is a UK-based e-commerce marine chandlery operated as the trading name of Mrs JC Altham & Sons (Lancaster) Ltd, selling Unitor, Hadex, Nalfleet, and Gamazyme marine chemicals plus deck hardware and consumables to commercial vessels, private yachts, and the offshore industry via a WooCommerce storefront with UK and international delivery.

Ownership category

akta.pro rank

Product category

Marine Chandlery Supplies

NAICS

Support Activities for Water Transportation (4883), Marine Cargo Handling (48832)

SIC

Wholesale-Professional & Commercial Equipment & Supplies (5040), Wholesale-Machinery, Equipment & Supplies (5080)

akta.pro primary industry

Marine MRO Parts & Consumables Distribution (TLAKAOAJ)

akta.pro secondary industries

Commercial Ship Repair & Drydocking (TLAKAKAA), Marine Parts, Accessories & Maintenance Supplies Retail (CRAMAIAB)

Keywords

• Marine cleaning supplies
• Ship chandlery services
• Marine chemical products
• Deck hardware supplies
• Vessel maintenance consumables

Headquarters

HQ city

Heysham

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Product Sales: Offshore Supply generates revenue through direct sales of marine supplies and chandlery products via their e-commerce website. The company sells a wide range of marine cleaning chemicals (Unitor, Hadex, Nalfleet, Gamazyme), deck hardware, marine engine spares, marine tapes, welding supplies, and other marine consumables. All transactions are conducted through their online store with prices quoted in British Pound Sterling excluding VAT. The revenue is transactional and one-time per order, without recurring subscription components.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Offshore Supply operates an online marine chandlery store selling marine cleaning chemicals (Unitor, Hadex, Nalfleet, Gamazyme), deck hardware, marine engine spares, marine tapes, welding supplies, and other consumables for vessels. The company delivers marine supplies to all UK ports and worldwide, serving commercial ships, private yachts, platform supply vessels, coastal workboats, tankers, drilling platforms, and offshore wind farms.

Product overview

Offshore Supply operates as a marine chandlery e-commerce platform selling a comprehensive range of marine supplies and boat maintenance products. The portfolio is organised around major chemical and product brands including Unitor (marine cleaning chemicals, water treatment, fuel additives, welding supplies, and maintenance products), Hadex (drinking water disinfectants), Nalfleet (marine chemical solutions from Wilhelmsen), Gamazyme (biological cleaning products), and Richter (precision tank measuring equipment). Supporting product categories include marine tapes, deck hardware, engine spares, fuel treatments such as FuelClear M15, and Deb Swarfega cleaning products. The company functions as a ship chandler serving the UK offshore industry with online ordering capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Unitor Marine Products Wilhelmsen Unitor brand marine cleaning chemicals, water treatment, fuel additives, welding electrodes, maintenance products, and safety equipment for commercial vessels and offshore installations.
• Hadex Drinking Water Disinfectant Liquid sodium hypochlorite solution for disinfecting water in offshore and marine potable water systems, available in multiple volume variants.
• Nalfleet Marine Chemical Products Wilhelmsen group marine chemical solutions covering water treatment products, fuel system management, and onboard hygiene products such as Nalfleet 2000.
• Gamazyme Biological Cleaning Products Biological cleaning products for marine applications including offshore waste management, providing eco-friendly hygiene solutions.
• Richter Tank Dipping Tape and Gauging Paste Richter precision measuring instruments for calculating liquid depth in marine tanks, including tank dipping tapes with weights in black carbon steel and gauging paste products.
• Marine Tapes Specialised tapes for marine use including Marine Spray Stop Tape and SOLAS reflective tape for vessel safety and maintenance applications.
• Deck Hardware and Marine Engine Spares Mechanical components for vessel decks including bronze brazing rods, adjustable scupper plugs, duct air treatment products, cotton wiping rags, and general marine hardware and engine spares.
• FuelClear M15 Fuel Biocide FuelClear M15 is a fuel biocide product for treating fuel systems to prevent microbial contamination and improve vessel performance.

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Five partnerships are on record, tiered core and minor.

• Wilhelmsen Ship Services (Unitor, Nalfleet)coreChannel Partner/ Reseller/ DistributorOffshore Supply is a proud stockist of Wilhelmsen group products including Unitor and Nalfleet marine chemical solutions. Unitor is described as providing a range of equipment, consumables and services including welding and cutting equipment, firefighting and safety gear, marine chemicals, gas detection systems, cylinder supplies, maintenance products and specialised training services. Nalfleet is a trusted name in maritime chemical solutions and part of the Wilhelmsen group, the largest marine network in the world.
• HadexcoreChannel Partner/ Reseller/ DistributorOffshore Supply stocks the Hadex range of drinking water disinfectant products for marine potable water systems. Hadex is a liquid sodium hypochlorite solution designed for effective water disinfection in offshore water treatment applications.
• GamazymeminorChannel Partner/ Reseller/ DistributorOffshore Supply stocks Unitor Gamazyme biological cleaning products which work with a range of marine applications including offshore waste management. These eco-friendly products provide high-quality cleaning results while supporting marine environments.
• RichterminorChannel Partner/ Reseller/ DistributorOffshore Supply stocks Richter tank dipping tape and gauging paste products used for precision measurement of liquid depths in marine tanks.
• DEB SwarfegaminorChannel Partner/ Reseller/ DistributorOffshore Supply previously offered Swarfega Marinol marine degreaser products, a concentrated marine degreaser suitable for bilge tanks and deck wash cleaning. Note: Swarfega Marinol discontinued due to supply issues.

Scale indicators1 record

Recent moves6 records

Expansion highlights4 records

Direct peers

• Williams Marine: UK marine chandler and supplier serving vessels in UK ports. Comparable as a UK-based ship chandlery business operating in similar geographic and product territory as Offshore Supply.
• JP Offshore: UK-based marine supplies retailer focused on chandlery and offshore industry products. Comparable to Offshore Supply as a UK e-commerce competitor serving the offshore/commercial marine supply market with similar product categories.
• Force 4 Chandlery: One of the UK's largest marine chandlery retailers with an extensive online and physical store network. Directly comparable to Offshore Supply as a UK-based marine supplies retailer serving both commercial and recreational boaters with cleaning, hardware, electronics, and chandlery products.
• Imtra: US marine equipment supplier focused on lighting, propulsion, and deck hardware for vessels. Comparable as a specialty marine chandlery retailer with curated product lines and B2B/commercial customer focus.
• Marine Super Store: UK-based online marine chandlery retailer offering a broad catalog of boating and marine supplies. Competes head-to-head with Offshore Supply in the UK e-commerce marine supply space, particularly for private boat owners and small commercial operators.
• Fisheries Supply: US-based marine supplies distributor serving commercial fishing, workboat, and recreational marine markets. Comparable as a multi-channel marine chandlery retailer with similar product mix spanning cleaning, hardware, and consumables.
• SVB (Svenska Varvs och Båtutrustning): Europe's largest online retailer for sailing and boat equipment, headquartered in Germany. Comparable as a digital-first marine chandlery business with an extensive catalog covering cleaning, hardware, electronics, and consumables for vessels.

Broad incumbents

• West Marine: Largest US marine retailer with extensive physical and online presence. Comparable as a marine chandlery retailer with a much broader catalog and geographic footprint, representing an incumbent benchmark in the digital marine supply category.
• Defender Industries: Large US-based marine supplies distributor with a comprehensive catalog serving both commercial and recreational marine markets. Comparable as a long-established digital-first marine chandlery serving similar customer segments.
• Wilhelmsen Ship Services: World's largest maritime network and owner of Unitor/Nalfleet brands that Offshore Supply distributes. Comparable as the dominant marine supplies player whose product portfolio anchors Offshore Supply's catalog and whose direct operations compete for the same chandlery spend.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/offshore-supply

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Offshore Supply