 Four missiles will fit in one torpedo tube, stored in a magazine.First deliveries of IDAS for the German Navy and operational service were planned from 2014 on.Except for a few years of testing by the Royal Navy and Israeli Navy of the short range TV guided Blowpipe (missile) in the 1970s the IDAS system is the world's first missile which gives submarines the capability to engage air threats whilst submerged, and the first tube-launched missile that does not emerge in a capsule, but is fired directly from the torpedo tubes.