The most powerful electric saildrives come from Torqeedo series production. The Deep Blue 25 SD propels sail yachts of up to 40 feet in length to speeds of up to almost ten knots (18 km/h), or smaller boats even faster when planing. This makes cruising with large sail yachts completely emission-free with virtually no noise or vibration. The Deep Blue 50 SD offers twice the performance. The Deep Blue sail drive is part of a completely integrated comprehensive system that was developed using industrial engineering methods, comprises high-tech components and which is manufactured in series production.