A well-known Swedish manufacturer of industrial engine equipment, Skandia were heavily involved with marine engines, and produced three main versions of their engines: Direct Reversing, Non-Reversing with reversing gearbox and Non-Reversing with variable pitch propellor. The smallest four-cylinder unit produced 50 to 60 bhp at about 400 rpm up to the largest at 385 bhp at 250rpm.
Cross-section of the Skandia engine crankcase and cylinder
The Skandia twin-cylinder hot-bulb two-stroke engine with reversing gear. Note the large thrust block at the propellor shaft end of the base plate and the lubrication pipes on the side of the blocks. The mechanical lubricator was engine driven from the pump just to the left of the rear cylinder.
The Skandia engine with reversing propellor, what we would call a variable pitch propellor these days. The engine has a clutch between the crankshaft and the reversing mechanism to relieve the strain of the reversing operation where the propellor would tend to be turned by the passage of water past the blades while the engine was moving.