Speed limit and beach marking buoys are closely connected, and some of the buoys use a common design. Special buoys to cope with local conditions or bye-laws are possible and do not usually cost more than the standard product.

In recent years there has been an increasing demand for small, tough buoys to indicate speed limits on rivers and estuaries. Norfloat have developed a wide range of buoys for this purpose, and in the majority of cases they are custom made for the clients requirements. most of these buoys will be moulded from polyethylene and foam filled to protect them from damage.