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 6110-01-072-3680
NSN 6240-00-130-5643
NSN 5965-00-412-4402
NSN 5910-01-374-6674
NSN 5855-01-247-0012
NSN 5975-01-485-9888
NSN 6220-01-510-2507
NSN 5945-01-328-4628
NSN 5996-00-161-4202
NSN 6685-00-920-3457
NSN 5960-01-233-0311
NSN 5999-01-286-1590