Several important lessons were learned during the execution of the dredging works, concerning the workability of the design and the consequences of creating a specific landscape as compared with a case without predefined bedforms:
- Make sure that there is sufficient data on bathymetry, sediment properties, local currents and tidal windows. This is essential information for contractors to determine their dredging strategy.
- Involve the contractors early in the design phase, so that the final design fits easily into the dredging plans and methods and can therefore be created cost-effectively, i.e. with a minimum loss of productivity. Use their knowledge on sediment properties, ship types, planning and general dredging expertise when designing and planning the location.
- Make the decision on landscaping as early as possible and provide data on requirements and/or locations so that the contractors can fit the bedform creation into their dredging plans and therefore also in the permits.
- Maintain an open communication with contractors / dredger captains to determine the actual workability of the design and to discuss the need for any optimisations;
- If the scope of the project and /or available fleet of TSHDs changes, confer with contractor to determine if the design needs to be adapted (e.g. concerning dredging depths).