++++ State aid ° Prohibition ° Derogations ° Aid to shipbuilding ° Directive 90/684 ° Derogation criteria ° Aid granted as development assistance to a developing country ° Incompatibility with the common market of aid not pursuing a development objective ° Role of the Commission ° Determination as to whether the development objective is genuine (EEC Treaty, Art. 92(3); Council Directive 90/684, Art. 4(7))