The Experimental Squadrons of the Royal Navy were groups of ships sent out in the 1830s and 1840s to test new techniques of ship design, armament, building and propulsion against old ones. They came about as a result of conflict between the "empirical" school of shipbuilding (led by William Symonds, Surveyor of the Navy), the "scientific" school led by the first School of Naval Architecture (closed in 1832), and the "traditional" school led by master shipwrights from the royal dockyards.