TO: ADM. ISOROKU YAMAMOTO, COMBINED FLEET CINC, KURE.
SUBJECT: ASW WARFARE REPORT.
DATE: APRIL 10TH, 1942
ENEMY BOAT SPOTTED BY HIJMS IKAZUCHI NEAR RABAUL. SHE AND HER ASW GROUP LAUNCHED A MASSSIVE DEPTH CHARGE ATTACK REPORTING 2 HITS OVER ENEMY SUBMARINE, WITH 1 DIRECT HIT REPORTED TOO. PING ENEMY BOAT FOR SEVERAL HOURS OUR SHIPS LOST CONTACT WITH ENEMY.
AT MORNING AN ENEMY DAMAGED SUBMARINE WAS HIT BY H6K4 FLYING AN ASW MISSION FROM RABAUL. ONE BOMB HIT AND ENEMY BOAT IS REPORTED SUNK.
A GREAT SUCCESS FOR OUR ASW DOCTRINE EMPLOYING ASW PATROL FLYING BOATS WITH HIGH SKILL PILOTS COORDINATED WITH HUNTER KILLER GROUPS CENTER IN A GOOD COMMANDED DESTROYER AND SEVERAL SUBCHASSERS.
LONG LIVE TO THE EMPEROR !
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