Event details
| Voyage: | IN2020_V01 [details] |
| When: | 2020-02-25 11:45:40 UTC - entered into Elog/Everlog as 2020-02-25 11:45:40 |
| Log: | Updated Dredge in2020_v01 |
| Equipment: | Not specified |
| Position: |
Latitude: -32.67083 Longitude: 97.45167
- entered into Elog as 32 40.25 S, 97 27.1 E |
| Dredge Number: | D18 |
| Wind Direction (deg): | 9.98 |
| Planned Heading (deg): | 120 |
| Dip Direction of Slope (deg): | 290 |
| Current Velocity (m/min): | 6 |
| Current Direction (deg): | 262 |
| WP2 Depth (m): | 3750 |
| WP3 Depth (m): | 3240 |
| Ellipsoidal Distance (metres): | 980 |
| Rise/Run (auto-filled): | 0.520 |
| WP3 Target Wire Out (m): | 4500 |
| Speed Through Water Average (WP1 to WP2) (knots): | 0.15 |
| Speed Over Ground Average (WP2 to WP3) (knots): | 0.3 |
| WP3 Actual Wire Out (m): | 4500 |
| Ship speed at retrival (knots): | 0.2 |
| Ship speed at retrival (m/min) (auto-filled): | 6.17 |
| Retrival Wire Speed (m/min): | 15 |
| Wire Out at First Tension Spike (m): | 4498 |
| Tension Max (Tonnes): | 12 |
| Hung Up: | Yes |
| Wire Out Off Bottom (meters): | 3100 |
| Overall Operation Rating: | 8 |
| Completion Time: | 12 |
| Attachment: | 200225_121131_D18_at_bottom_of_slope.JPG,200225_140940_D18_grafana_start_of_dredge.JPG,200225_152921_D18_grafana_dredge_coming_up.JPG |
| Stop-and-drop dredge deployment technique. Dredge in water at 11: | 46. |
| Stop paying out at 12: | 54. |
| Dredge on bottom at ~13: | 30 at~97.453,-32.672 (ship position). |
| Max wire out (WP3) at 13: | 17. |
| Spikes at: | 46; |
| Dredge off bottom at 15: | 03 at ~ ship pos 97.46,-32.67 water depth 3227m. |
| Haul in at 60m/min at 15: | 06. |
| Dredge at surface 16: | 12. Empy dredge. |
| Comments: | Stop-and-drop dredge deployment technique. Dredge in water at 11:46. WP2 planned start dredge-run position 97 27.12E, 32 40.29S at 3750m depth. Stop paying out at 12:46 as drifitng in - winch adjustments needed. Restart paying out at 12:54. Dredge on bottom at ~13:00:30 at~97.453,-32.672 (ship position). Max wire out (WP3) at 13:17 ship at 97.46,-32.67. Begin haul in 15m/min at 13:17. Spikes at: 9.4t at 13:17; 9.2 at 13:23; 9.7 at 13:24; 9.1 at 13:25; 9.8 at 13:26; 9.8 at 13:28; 9.8 at 13:32; 10.8 at 13:33; 9.7 at 13:34; 9.8 at 13:36; 9.9 at 13:37; 10 at 13:40; 10.1 at 13:41; 9.8 at 13:43; 9.8 at 13:45; 9.4 at 13:48; 9.9 at 13:49; 9.8 at 13:52; 9.8 at 13:53; 9.4 at 14:00; 9.7 at 14:02; 9.9 at 14:03; 10.7 at 14:04; 10.7 at 14:05; 11.5 at 14:06; 12 at 14:08; 12 at 14:10; 11.6 at 14:12; 11.9 at 14:13 (minor hookup); 11.9 at 14:17; 11.9 at 14:20; 11.8 at 14:23; 10.3 at 14:30; 10.8 at 14:33; 11.6 at 14:35 - hookup; unhooked ~14:46; Dredge off bottom at 15:03 at ~ ship pos 97.46,-32.67 water depth 3227m. Haul in at 60m/min at 15:06. Dredge at surface 16:06 on deck 16:12. Empy dredge. |