The 100 passenger Hamburg, Germany tourist vessel Alsterwasser is back in service after refurbishment following a devastating fire last year. The hydrogen fueled vessel has two 50 kW (67 hp) fuel cells powering a100kW (134 hp) hybrid electric propulsion system with lead acid batteries. The vessel was built in 2007 and entered service in 2008. The hull has an LOA of 25.5 m (84 ft), beam 5.2 m (17 ft), a draft (laden) of 1.3 m (4.2 ft) and displacement of 72 tonnes (79 tons). The maximum height of 2.6 m (8.5 ft) can be reduced to 2.3 m (7.5 ft) by lowering the cabin roof to allow passage under low bridges. The ship including fuel cell propulsion system is classified by Germanischer Lloyd. The hydrogen is sufficient for three days power supply, refueling takes approximately 12 minutes. The annual nett benefit to the environment is a saving of 1,000 kg of NOx (1.1 tons), 220 kg (485 lbs) SOx, 40 g (1.4 oz) of particulate and 70 tonnes (77 tons) of CO2. [More]