Tauck entered European river cruising in 2004 and has since expanded into an eight-ship operation. That will grow to nine in March with the launch of its first ship on Portugal's Douro. Like the rest of its fleet, the Andorinha will feature more suites and larger cabins and public spaces than traditional river ships. The ship will hold just 84 passengers, 33% fewer than other Douro ships of the same size. The line is also known for its quality and selection of included excursions.