441 Legation in Washington to Department of External Affairs
Cablegram 324 WASHINGTON, 1 May 1941, 6.53 p.m.
For Chief of Naval Staff  from Naval Attache. 
TROPIC No. 7 Navy Department have received with great satisfaction details regarding defences of Rabaul given in your telegram No. 454. 
(2) They had in mind the possibility of a Japanese occupation and are relieved at the steps already taken to counter this possibility.
(3) They are definitely of the opinion that Rabaul is the best base from which to operate in the Caroline area and would appreciate anything that can be done to assist the defences on a small scale, e.g. the establishment of a small force of auxiliary A/S  vessels if these could be spared without detriment to more important services.