Beta Marine was established in the United Kingdom and has been building marine engines since 1987. The company was created to supply reliable, well-supported inboard diesels for the British inland-waterways market, where boats must run quietly and dependably for long hours, and it has grown into an internationally respected specialist marine-engine builder. The company's engines are now found in inland waterways craft, coastal cruisers, fishing boats and narrowboats across Europe and further afield, and its service network supports them wherever they are operated.

Beta is known for quiet, smooth and economical marine diesels sized for canal boats, cruisers, fishing boats and small workboats. Its engines are assembled around proven industrial diesel base units and completed in the UK with marine-specific cooling, instrumentation, exhaust and installation components, and the company also supplies generating sets, saildrives and electric propulsion systems. This approach gives boaters the durability of a commercial-grade diesel with the support of a dedicated marine specialist.

Beta Marine workshop and operator manuals cover the complete propulsion installation: the diesel engine and its fuel, cooling, lubrication and air systems, the gearbox or saildrive, engine instrumentation and the electrical circuits with wiring diagrams. They include torque specifications, valve and injection adjustments, fault-finding procedures, winterizing and recommissioning guidance, and the scheduled maintenance program recommended for marine duty.

These manuals benefit boat owners who carry out their own engine maintenance, marine engineers and boatyards, and brokers and surveyors who need factory specifications when assessing Beta-powered boats.