Linear drives are the most preferred on sailboats. When attached to the quadrant or tiller it has direct control and slack in wires or cable is avoided. Several hydraulic models are available in the HLD range. They are all equipped with a bypass valve and need not be detached when steering by hand. All hydraulic linear drives are also available in a split version with the pump separated from the ram and interconnected with 1m (3ft) hoses. This will make the installation more convenient when space becomes a problem. For the bigger sailboats, a dual ram version is available