Command has been acclaimed as the best Wargame of the Year by over 10 publications, including SimHQ, Armchair General, Kriegsimulation, Real and Simulated Wars, Grogheads and even the US Naval Institute said: "Command will find a following not only among civilian gamers but might have value among military, government, and policy circles as a simulator of modern warfare".


Login: Password:  

AN/SQS-53 sonar 

AN/SQS-53 sonar

(United States)

Notes: This bow-mounted system was developed as a replacement for the AN/SQS-26, and is now generally regarded as the best surface-ship sonar in the world. The AN/SQS-53 uses a bow dome of a heavy rubber material (compared to the AN/SQS-26’s metal dome) and directly interfaces with the Mk116 ASW warfare suite. Better reliability was also a goal, and the AN/SQS-53 is claimed to have a 2000-hour mean time between failures and the USN claims that a repair technician can be trained in 5 weeks (compared to 5 months for the AN/SQS-26). The system was developed by General Electric and declared ready in 1972 and entered fleet service in 1975.

The AN/SQS-53B was a major 1980s upgrade including the AN/UYS-1 and AN/UYK-44(V) (aka the “yuk-forty-four) digital processor. It greatly improved range and performance. The AN/SQS-53C also added the AN/UYH-1 compact processor and uses 50% less space internally; it can also interface with the AN/SQQ-89 shipwide combat system. All surviving USN systems are now upgraded to either the -B or -C standard. The AN/SQS-53D upgrade of 1997 simply replaced any remaining analog gear in the few ships still using the -B model at that time.

The system allows for tracking over 100 contacts in both active and passive (including auto-track in passive), search, and passive classification functions. The array itself is a honeycomb-pattern cylinder with 576 transducers. Cost of a system was $6.3 million for the basic model, and between $10-11 million for the -B and -C sets.

Japanese nomenclature is OQS-102, manufactured under license by NEC.

Carried aboard: Virginia class CGNs, Ticonderoga class CGs, Belknap class CGs, Kongo class DDGs, Arleigh Burke class DDGs, Kidd class DDGs, Spruance class DDs.

(Note: Figures below are based on unclassified available data, and an average of conditions including depth, temperature, sea state, ambient noise, etc)



Range (active):


Direct-path: 8NM

Surface ducting: 10NM

Bottom-Bounce: 17NM

Range (passive):


Direct-path: 25NM

CZ: 34NM and 65NM average

Active transmission modes:

FM pulse and CW

FM pulse, CW, omni-directional pulse, continuous rotational-directed, underwater communications (“PROBE ALERT”)



Entry created by: Jason W. Henson

Related database records

The HarpoonHQ database & encyclopedia web application
Powered by Strip-Joint 2.1 technology
(c)2003-2007 Dimitris "Sunburn" Dranidis
Contact Us