Single beam sounding system depth record of obstruction with surveyor’s annotations such as LE (Line ends), LB (Line breaks), O/C 090 (on course 090), etc.
| 640 x 368 | 41.17 KB | |
| 1280 x 735 | 143.77 KB | |
| 1920 x 1102 | 302.87 KB | |
| 2672 x 1533 | 620.78 KB |
| Added On | 16th October 2015 |
| Viewed | 9 viewed |