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 | 8 viewed |