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 5925-01-590-7079
NSN 6650-01-574-4179
NSN 6150-01-200-3591
NSN 5999-00-062-3056
NSN 7035-01-579-4029
NSN 6320-01-484-7734
NSN 5835-00-368-4182
NSN 6240-01-425-0606
NSN 5930-01-551-6134
NSN 5950-01-596-4466
NSN 5996-01-416-6227
NSN 5996-00-941-2885