In the Netherlands, a rower is categorized as a Veteran as of the age of 27. De Maas therefore has a substantial amount of Veteran rowers, of all technical levels. As a result of the yearly Rowing instruction, new rowing teams are formed, but also former University rowers team up. These rowing team often stay on the water for years, in more or less the same set up. Some row on the Rotte on Sunday morning with coffee break, others row national and international boat-races including the matching training activity. The Veteran rowers are highly active and involved in what De Maas is.