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PRS 3-4

Country of Origin: Germany


The PRS 3-4 is a passive ranging sonar fitted with 40 hydrophones for use with the CSU 3 active scanning sonar (see separate database entry).

The sonar has two operating modes.

In the normal mode, it detects the radiated noise of an enemy submarine and determines its bearing and distance. The target's speed and course are also calculated. These functions can be performed for four targets simultaneously.

In the automatic mode, the automatic target tracking (ATT) channel...

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