This report presents the work done in the framework of the project EASA 2007.C16 on helicopter ditching and crashworthiness. The main purposes of this work are - To establish the design objectives for additional floatation devices to implement the side-floating concept - To identify possible retrofit solutions, using EUROCOPTER helicopters AS355 and EC225 as the basis. - To analyse the safety benefits and economic impacts. - To study the technical feasibility of the side floating concept.