The powershift transmission has an optimal gear ratio spread combined with especially high mechanical efficiency. The torque converter lock-up clutch closes shortly after setoff to use engine power effectively. Combined with the torque converter ratio, the six gears produce a maximum total spread of 12.5. TopoDyn Life shift software controls the gear shifts. As the topography changes, this program always selects the right gear, while also taking into account all other driving resistance values.

The hydrodynamic torque converter with standard turbine torsional damper enables high input torques at low engine speeds. This cuts fuel consumption by up to 5 percent compared with automatic transmissions with fewer than 6 gears. It also reduces the noise level. The integrated primary retarder is incorporated into the vehicle's brake management system and supports high braking power even at low speeds. This effectively reduces the strain on the vehicle's service brakes. The dual cooling system with transmission and retarder heat exchanger reliably protects against overheating and extends oil change intervals.

ZF Marine transmissions, rated up to 14,000 kW, are available in many configurations. For all kinds of commercial vessels ZF provides a complete line of heavy-duty transmissions. Gearbox housings are extremely resistant to torsional stresses and are generously sized to safely transmit the thrust loads to the ship's foundation. Numerous ratios are available that perfectly match today's medium-speed diesel engines. For commercial, ocean-going vessels such as freighters and tankers, heavy-duty transmissions with various PTOs and PTIs can be chosen.

Large motor yachts, fast ferries and vessels for naval, customs and coastguard duties - all require compact, high performance transmissions, specially configured to meet designer’s requirements. Furnished with high-tensile aluminum alloy gear housings they can be rigged with optional equipment, monitoring systems etc. to comply with stringent environmental and technical specifications, where safety, availability and reliability are of utmost importance. Highest quality standards, intelligent design concepts and ease of maintenance ensure compliance with specified operating profiles at minimum down-time and life cycle cost.