In engineering terms, a dolphin is a pile or group of piles with fixity in the bed of the watercourse and subjected to a horizontal load. The bed of the watercourse is generally the in situ soil, the critical horizontal load mostly caused by the impact of a vessel.
Dolphins vary in terms of their construction and function and can be basically divided into two groups depending on their purpose:
In Germany in particular, dolphins are constructed from sheet pile materials. Such dolphins are assembled from between two and eight sheet pile sections that are welded together over their entire length. Another variation is the dolphin made from a single tubular section – with thick wall and large outside diameter.
Depending on their function, dolphins are equipped with bollards on the top and sides, mooring hooks or recessed bollards, ladders and plates to resist impacts.
Upon request, dolphins can be coated in our works.