History of the horse in Britain drawn by two horses, the "Dutch plough", was used in eastern England; this was followed in 1730 by the lightweight Rotherham plough, an unwheeled, or "swing" plough. It was advertised as reducing ploughing times by a third, or using a third less horsepower for the same ploughing time. The improved seed drill and horse-hoe were invented by Jethro Tull in 1731; but it took more than 100 years for these designs to come into common use. The earliest horse-powered threshing machines, which were installed permanently in barns, were developed towards the end of the 18th century. The use of fast
Muster drill is the responsibility of the crew to ensure that a muster drill is held and that every passenger and crew member is aware that it is being held. If a muster drill cannot be held, a report in the logbook must be made to state the circumstances. Laws in some places hold crew members liable to face civil charges if they voluntarily do not attend the muster drill. For example, in some US states, those who do not attend are fined varying amounts, depending on their rank. Muster drills are typically not conducted and are usually not required for short