A yacht // is a recreational boat or ship. The term originated from the Dutch Jacht meaning "hunt".[note 1] It was originally defined as a light fast sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into the shallow waters of the Low Countries. After its selection by Charles II of England as the vessel to Britain from Holland for his restoration, it came to be used to mean a vessel used to convey important persons.
In modern use the term designates two rather different classes of watercraft,
sailing and power boats. Yachts are different from working ships mainly
by their leisure purpose, and it was not until the rise of the steamboat and other types of powerboat
that sailing vessels in general came to be perceived as luxury, or
recreational vessels. Later the term came to encompass motor boats for
primarily private pleasure purposes as well.
Yacht lengths generally range from 10 metres (33 ft) up to dozens of
metres (hundreds of feet). A luxury craft smaller than 12 metres (39 ft)
is more commonly called a cabin cruiser or simply a cruiser. A mega yacht generally refers to any yacht (sail or power) above 30 m (98 ft) and a super yacht generally refers to any yacht over 50 metres (164 ft). This size is small in relation to typical cruise liners and oil tankers. - Read more here -
Charlie's comments: In recent TOEIC tests here in Thailand, several students reported questions concerning 'yacht'. It is important to note that the words 'vessel', 'craft', 'ferry' and 'watercraft' are also used to express the idea of a boat on the water.