For example, in his letter to the First Minister, the Rt Hon Bob Ainsworth MP stated that the majority of the deep water maintenance work will be undertaken at Devonport with Portsmouth undertaking sufficient work on an occasional basis to ensure that they can address any ˜surge'' requirements and it is not clear what, if any, the employment impact for Scotland will be following the transfer of the three Trafalgar class submarines, which is not anticipated to take place before 2017.