Rolls-Royce specializes in the design, manufacture and marketing of engines for the aeronautics, marine, and energy sectors. Net sales break down by family of products as follows:
- aircraft engines (68.1%): engines for civil aviation (77.9% of net sales) and military aerospace (22.1%);
- diesel engines and gas turbine technology (19.3%): for electric power plants and the oil industry;
- marine equipment (7.1%): propulsion motors, control and anchoring systems, etc., primarily for use on military vessels, cruise ships, and oil tankers;
- nuclear systems (5.5%): for power generation plants and naval propulsion systems.
Net sales are distributed geographically as follows: the United Kingdom (11.5%), Europe (22.9%), the Unites States (27.1%), Asia (24.1%), Middle East (7.6%), Canada (2%), Africa (1.7%), Australasia (1.4%) and other (1.7%).