There are several different British Seagull outboard motor models, usually with a single cylinder water-cooled two-stroke engine. Originally known as "The Best Outboard in the World", then changed to "The Best Outboard Motor for the World". Some of the engines had the Villiers patented flywheel magneto, and on its port side was a simple carburettor. Above the cylinder head was bolted a small brass fuel tank whose 10:1, or 25:1 depending on age, fuel/oil mix was gravity-fed to the carburettor via a fuel line. Starting was effected with a hand-wound pull-rope, although a recoil starter was an option. Connecting the motor to the gearbox and propeller were two downtubes, the forward one containing the drive shaft and the aft tube serving as the exhaust, which vented underwater.