In the 68 campaign, the majority of Soviet ships use the outdated Buck Toe and Wolf Paw sonars, with only the Kresta 1 and Moskva having advanced sets.
In the 1980s, Bull Nose is the most common Soviet MF set and comparable to SQS-23 performance. The larger LF sets like Moose Jaw and Horse Jaw are comparable to SQS-26 and modelled as such in the game. Self-noise inhibits sensor performance, so the Soviets are at a major disadvantage here until the advent of quiet boats like the Victor 3 and Sierra.
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