William Allsop has 50+ years' experience of coastal / shoreline structures, engineering works on coasts, in tidal estuaries, and rivers, in sand and cohesive sediment transport, of river structures

Marisa Ackhurst has 20 years’ experience in the management and design of marine and port structures and is currently employed as an associate at Zutari. Her design experience is typically in concrete and steel structures with project experience in Africa, the Middle East, Indian Ocean Islands and South-East Asia. She has worked for a marine contractor before moving into the consulting engineering field. Marisa is the author of the ICE design guide, Design of Vertical Gravity Sea and Quay Walls, which has recently been published (May 2020). This also contributed to her receiving a commendation from the South African Institution of Civil Engineering for 2020’s Technologist of the Year. Furthermore, Marisa is an active PIANC member currently fulfilling the role of secretary for the South African branch.

Dimitrios C. Konstantakos, P.E., is the founder and CEO of Deep Excavation LLC, a developer of user-friendly, high-quality, deep excavation calculation and design software. He is also the current chair of the American Society of Civil Engineers’ Earth Retaining Structures Committee.