ANNEX A. SEABORNE ATTACK ON EIRE. 1. A German invasion of Eire might take place either (a) as a diversion, or (b) with the intention of occupying Ireland, and establishing air and submarine bases for attack on shipping in the Western Approaches and/or on our West Coast ports and industries. 2. So far as seaborne invasion is concerned the limiting factors in either case are the amount of shipping available for the expedition, and the size of the armada that would be able to evade interception by our Fleet.