Rotterdam is inextricably linked to the River Maas. The city had the largest seaport in Europe and is therefore known as a port city. The River Maas is the lifeline of Rotterdam. Boat Rowing is organized on the River Maas, the river with the most beautiful bridges. The start is at Entrepothaven. There are 150 member associations of the Federatie Sloeproeien Nederland, including 250 rowing boats. Every year, more than 20 competitions are organized nationally. In the Netherlands Boat Rowing is still relatively small, but the sport is growing in popularity.