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 6130-01-600-1808
NSN
NSN 5835-01-549-2911
NSN 6645-01-418-1657
NSN 5925-01-449-1388
NSN 5998-01-507-6327
NSN 6150-01-554-5356
NSN 6610-01-353-9326
NSN 6650-01-451-1372
NSN 6145-01-304-7379
NSN 5855-01-519-1226
NSN 5998-01-529-7720