Galloway Adriatic

The Galloway Adriatic was a WW1 era inline-six aircraft engine. The engine was developed by the Beardmore Halford Pullinger (BHP) design group and manufactured by Galloway Engineering, a subsidiary of William Beardmore and Company based in Kirkcudbright, Scotland.

In British military service the engine was known as the 230 BHP, a designation it shared with a version of the same engine built by Siddeley-Deasy, which later became known as the Siddeley Puma. Although the Galloway and Siddeley-Deasy versions followed a similar design, they had different dimensions and few interchangeable parts.

Difficulties related to the casting of the complex aluminum cylinder blocks delayed deliveries of the engine and only 94 Galloway Adriatic engines were completed. Galloway also built parts for Siddeley-Deasy whose version of the engine had a much larger production run with 4,228 units built.

Galloway Engineering later developed the V12 Galloway Atlantic aero engine by combining two banks of cylinders from the Galloway Adriatic onto a single crankshaft.