Shipbuilding

Efficiency and emissions

Ships still mainly sail on fossil fuels: heavy fuel oil, marine diesel or LNG. There are various approaches to making propulsion systems more efficient. Diesel engines can be combined with wind energy propulsion, e.g. towing kite drives or Flettner rotors. In order to meet emission requirements without purchasing low-sulphur fuel, some diesel propulsions are retrofitted with exhaust gas purification systems ("scrubbers").

Hybrid propulsion systems with batteries are also being planned as a climate-friendly solution, which will allow the route or berthing time to be partly emission-free. Existing engines can also be converted to climate-neutral methanol, but this requires significantly larger fuel tanks. The first hydrogen tankers are also being developed, and fuel cells for maritime use are being researched (e4ships) and tested in practice.

Industrial valves for shipboard systems

Self-acting industrial valves from Mankenberg can be found in fuel or lub oil circuits and in water and waste water systems. Careful material selection is essential for use in the highly corrosive maritime atmosphere. Thanks to the deep-drawing process, the valves have a compact design and low weight for installation in hard-to-reach working areas.

Approvals from common classification societies such as DNV, LR, RINA or BV are possible.