Supporting safe access for RNLI upgrade

Wave modelling to inform design of wave calming structures at Douglas Lifeboat Station

The RNLI was seeking to update the lifeboat and facilities at Douglas, Isle of Man. The proposed location for the new berth was exposed to significant wave activity, particularly during winter, so wave calming devices were required to provide an acceptable level of risk for operation of the new all-weather lifeboat.

The wave climate for the proposed berth location with wave calming structures needed to be assessed and optimised. We developed a conceptual understanding of the marine physical environment within the study area, from which we built wave models and generated hindcasts to derive extreme wave climate.

Our harbour wave disturbance modelling determined the effects of wave attenuation (calming) options and provided information to aid optimal design for the safe access of crew to the lifeboat.