overview opening hours A chance to cruise the Vltava River on the Maria Croon or the Czech Boat. You can make use of scheduled sightseeing cruises, lunchtime cruises or a chartered dinner or private booking trip. opening hours Regular cruises on the Vltava River is provided by the ship Czech Boat, and the historic ship Maria Croon, with a capacity of 105 people. It was built in 1927 at the Schmidt shipyard in Oberkassel. Dvořákovo nábřeží, port No. 16 more about opening hours opening hours Regular cruises on the Vltava River is provided by the ship Czech Boat, and the historic ship Maria Croon, with a capacity of 105 people. It was built in 1927 at the Schmidt shipyard in Oberkassel. Dvořákovo nábřeží, port No. 16