On a special event that takes place every five years, along all the canals and on the sides of the harbour of Amsterdam, the hystorical marine tradition of this country appears as evident as possible, during a week when the art of shipping, of exploration and trading is celebrated by a crowd of ships from all around the world. For someone who is not familiar with the sea world, it's a way to discover the rules, the conventions and the everyday life on board, from the past until the present.