Iirc the Shrimp cans in position 3 were dummy cans with just the water glycol connections.the 13281 aerials were 2 and a blank or all 3 present.a blank would probably have been fitted after removing the blade antenna instead of refitting the 13281. For the Falkland conflict a dash 10 pod was carried on the starboard underwing pylon. One dash10 pod met an untimely end under a fork lift truck