 |
| |||
| back wall signal (Olvic) | |||
| base echo (Катерина С) | |||
| донный сигнал: 12 phrases in 5 subjects |
| Metallurgy | 3 |
| Non-destructive testing | 2 |
| Quality control and standards | 5 |
| Radiolocation | 1 |
| Welding | 1 |
|
| |||
| back wall signal (Olvic) | |||
| base echo (Катерина С) | |||
| донный сигнал: 12 phrases in 5 subjects |
| Metallurgy | 3 |
| Non-destructive testing | 2 |
| Quality control and standards | 5 |
| Radiolocation | 1 |
| Welding | 1 |