Stena Line - North Sea - Harwich to Hook of Holland
From the Hook of Holland take a train to Rotterdam or Amsterdam or head up the coast by car to the remote island of Texel.
Eco points: On its North Sea routes Stena Line pumps polluted water ashore and cleans wastewater by bacteriological processes to limit sea pollution.
Cost: From £91 for a vehicle and up to four passengers, without a cabin one way.
Time: Approximately 6.5 hours by day, 9.5 hours overnight.
Family perks: A basketball court on the top deck, cinema room, Fun Zone, Teen Zone with video games, kids menus and family cabins on the North Sea Superferries.
Journey highlights: Spending the night at sea is an adventure in itself, especially in the Superferries’ luxurious new cabins.