Definition(s)
Dynamic risers
Production risers tied back to floating structures are inherently more complex than those tied back to fixed structures, since they need to be able to accommodate the motion of the floating structure. For this reason such risers are commonly referred to as dynamic risers.
Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards