HNLMS Den Helder (A834)

The HNLMS Den Helder (A834) (also known as the Combat Support Ship (CSS)) is a new replenishment vessel under construction for the Royal Netherlands Navy. The Den Helder will complement the Amsterdam-class replenishment oilers currently in service. It is 588 feet 11 inches (179.5 meters) in length, has a displacement of nearly 20,000 tons, a crew of seventy-five, and a top speed of 20 knots (37.04 km/h). It was laid down in May 2021, launched in 2024, and commissioned in 2025.