A direct acting steam windlass and capstan was fitted on the forecastle head. Technically speaking, the term "windlass" refers only to horizontal winches. The dredge windlass and its motor are mounted amidships, between the mast and deckhouse. Most modern stainless steel swivels will pass easily over windlass gypsies and through hawseholes. Most modern stainless steel swivels will pass easily through hawseholes and over windlass gypsies. One device being the windlass which used ropes and pulleys to manipulate objects. The required crossbows needed a massive base frame and powerful windlass devices. A Spanish windlass is sometimes used to tighten a tourniquet or a straitjacket. At this time, access to the top was via removable ladders or windlass. The principle is similar to that of the windlass, which has a horizontal axle. The Greek scientist Archimedes was the inventor of the windlass. Due to state laws, the boat has no motor (other than for the windlass). The bed is rolled under the platen, using a windlass mechanism. Lifting was performed by two men using a windlass. The trawl is a sort of big fishing net that is wound on the windlass.