An item whose electrical output provides synthetic signals which, when applied to a sonar set or directly to the indicator of a sonar set, will give a presentation similar to one observed under actual operating conditions.
Classification: Ship' logs and depth-sounding apparatus for navigation
NSN 6610-01-543-3753
NSN 5910-01-423-8459
NSN 5925-01-432-7603
NSN 5935-00-477-4782
NSN 5960-01-627-6547
NSN 6220-00-404-6249
NSN 5925-01-592-3077
NSN 5905-00-499-7787
NSN 4140-00-274-4002
NSN 6110-01-447-2770
NSN 6130-01-408-4678
NSN 5960-00-263-0106