Dynamic analysis has an important role to play in the rapid expansion of offshore wind
installations worldwide, as it affects multiple design stages. This paper highlights the use of
dynamic analysis in two distinct aspects of offshore geotechnics. It first gives examples from
recent Joint Industry Projects where consistent procedures for wave propagation analysis based
on impact pile driving and restrike data were established, ultimately resulting in the development
of more reliable tools for the assessment of axial capacity of piles supporting jacket structures.
Following the rapid expansion of offshore wind farms in seismic areas, the second part of the
paper discusses some of the challenges in transferring some of the existing seismic assessment
procedures, which were established for conventional onshore structures, to offshore structures.
This includes the assessment of liquefaction offshore at large depths and its consequences on
the response of offshore wind turbines supported by monopile foundations.