The yacht's systems, known as the engines, are what propel and maintain the yacht moving over the ocean's waves. Your yacht engine maintenance engineer would also inform you that an engine for a boat measuring 40 feet would differ from one for a yacht measuring 40 meters in weight, size, complexity, and power.
Smaller yacht engines are technically demanding, but professionals in yacht engine services work with superyacht engines that are exceedingly complicated. In addition to the primary engine, a yacht has a variety of other systems, including auxiliary machinery, generators, air conditioning systems, and a sewage treatment facility. In theory, the primary distinction between a yacht and a superyacht engine is one of size. Superyacht engines are also larger, more sophisticated, and if properly maintained, more efficient.