Self-supporting 3000 liter tank. Heat-welded tank in one piece, truncated cone shape. A non-pneumatic floating ring is incorporated into the upper edge. In the lower part some metal D-rings and a high tenacity nylon rope are fixed. The tub is able to support itself even in the event of small impacts. Dimensions: diameter at the base approximately 2.10 metres, diameter of the upper opening m. Approximately 1.40 m, height up to approximately 1.30 metres. Weight: approximately 18 kg.