ZF provides a complete line of heavy duty gearboxes with cast iron housing and deep ratios for all types of vessels from tugs to tankers, fishing boats to factory ships. These transmissions can be matched to all types of ICE (internal combustion engines) up to 12.000 kW power. Several accessories like PTOs and PTIs are available as well as a “get home” capability and either manual or automatic trolling for slow-speed operation.