GLOSSARY 



AAFAC - Army Air Force Antisubmarine Commando 



AirAsDevLant - Aircraft Antisubmarine Development Detachment, 



Atlantic Fleet 

 ADP - Ammonium dihydrogen phosphate* 

 AS/ or A/S - Anti-submarine 

 AsDevLant - Antisubmarine Development Detachment, Atlantic 



Fleet o 

 ASDIC - Anti-submarine Detection Investigating Committee; 



British sonar gear- 

 ASW - Anti-submarine Warfare * 



AS'jVIS - Anti-submarine Warfare Instructors' School* 

 ASWORG - Anti-submarine Warfare Operations Research Group* 

 ATF - Automatic Target Follower* 

 3DI - Bearing Deviation Indicator* 

 Bu Ships - Bureau of ShipSj Navy Department* 



CAM - Merchant vessel equipped with catapult -launched plane* 

 CT-TO - Chief of Naval Operations* 



CominCh - Commander-in-Chief * United States Fleet. 

 ComServPac - Commander, Service Force, Pacific Fleet. 

 ComSubDiv (No*) - Commander, Submarine Division (No*). 

 ComSubsPac - Commander s Submarine Force , Pacific Fleet* 

 ComSubsTrainPac - Commander , Submarine Training Force, 



Pacific Fleet* 

 CRO - Cathode ray oscillograph* 



CUDWR - Columbia University Division of War Research* 

 DCI - Depth charge intervalometer * 

 DE - Destroyer escort 

 ERSB - Expendable radio sonobuoy* 

 "Hedgehop" - Multiple spigot Antisubmarine Mortar for Surface 



Vessels * 

 H/F D/F or "Huff Duff" - High Frequency Direction Finder. 

 HUSL - Harvard Underwater Sound Laboratory* 



JK - Underwater Sound Listening System Using Crystal Microphone 

 JP - A type of sonic listening system for submarines* 

 MTB - Maintenance of True Bearing. 

 MV - Multi-spot Listening System* 



NM - Type of echo-ranging magnetostriction projector* 

 NRL - Naval Research Laboratory. 



OAY - Self -noise measuring equipment used on submarines* 

 ORG - Operations Research Group. 

 PPI - Plan Position Indicator* 



QA - Echo-ranging gear with quartz crystal projector (British)* 

 QB - Echo-ranging gear with Rochelle salt projector* 

 3,C - Echo-ranging gear with magnetostriction projector* 



