Castle Hills has in Stock in Norway the largest collection of Modular Surface Buoys in the region. Several hundreds of pieces of all sizes, with a countless number of modules, capable to achieve virtually any buoyancy required by your project. We have not only Used Second Hand Modular Buoys, which are much cheaper than buying a new one from the factory, but we also have First Hand Surplus Modular Buoys in Stock, at great prices as well. All in excellent conditions.