Totally enclosed drive unit to IP67 is designed for safety, reliability and long life expectancy. Specifically designed for marine and other special application areas. It is particularly suitable for workboats or craft involved in heavy-duty usage in medium-size applications. Supplied as a fixed or variable arc model for 12 and 24 Volt dc. The standard motor has two speeds and a self-parking facility. Insulated earth return and EMC filter are standard. Pantograph arms with blades up to 900mm (36 inches) are available.