While at first Wolseley supplied engines for launches, made for them by Teddington Launch Works, they moved on to small river craft and light coasting boats. The demand for engines for larger vessels grew. It was not uncommon for orders to be booked for yachts, racing launches and ferry boats to carry fifty or more passengers. These were manufactured by S E Saunders Limited at Cowes, Isle of Wight. Special engines were made for lifeboats. In 1906 horizontal engines of sixteen cylinders were designed and constructed for British submarines. They were designed to run at a low speed. High efficiency V8 engines were made for hydroplanes as well as straight eights to run on petrol or paraffin. Weight was very important and these engines were of advanced design. The airship Mayfly was fitted with Wolseley engines.
