ABSTRACT
This chapter deals with the design of protections against ship loads in waterways. The loads in this chapter are divided into three types: the primary wave, related to the length of the ship, the secondary waves, related to the shape of the bow of the ship, and the propeller wash, related to the propulsion of the ship. For the design of protections, it is recommended to assume a value of 90% of the limit speed. The primary wave is dominant in relatively small waterways where the blockage of the cross-section by ships is not negligible (which can already be the case when the blockage is about 10%). Within the primary wave, the stern wave usually gives the most severe attack on the banks of the waterways. The secondary waves are dominant when blockage does not play a role. Their magnitude depends much more on the shape of the bow than on the draught or length of the ship.
