RIB - Radio Installation Bulletin. 



SADU ■*- Sea-Search Attack and Development Unit, 



S-band Radar - Microwave (10-em. ) radar. 



SCR - Search radar. 



SGM - Sound gear monitor. 



SJ - Submarine radar, 



UCDWR - University of California Division of War Research. 



USRL - Underwater Sound Reference Laboratories, Columbia 



University. 

 VLR - Very-long-range antisubmarine aircraft. 

 WHOI - Woods Hole Oceanographic Institution. 

 X-band Radar - Microwave (3-cm.) Radar. 



