| Session ID | Uploaded Date | Uploaded By | Comment | Signals | Logs | DGPS | DSC | HAMBCN | Navtex | NDB | Time | Other | First Log date | Last Log Date | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15231 | 2024-04-14 07:54:08 | Roelof Bakker | 46 | 47 | 0 | 0 | 0 | 0 | 47 | 0 | 0 | 2024-03-21 22:33:00 | 2024-03-29 21:31:00 | Map | |
| 15121 | 2024-03-27 13:38:20 | Roelof Bakker | 36 | 39 | 0 | 0 | 0 | 0 | 39 | 0 | 0 | 2024-03-15 18:10:00 | 2024-03-23 01:42:00 | Map | |
| 15108 | 2024-03-27 13:08:01 | Roelof Bakker | 10 | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 2024-03-12 20:13:00 | 2024-03-14 03:30:00 | Map | |
| 14999 | 2024-03-14 10:33:00 | Roelof Bakker | 13 | 13 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 2024-03-01 23:35:00 | 2024-03-08 22:50:00 | Map | |
| 14899 | 2024-03-01 21:19:34 | Roelof Bakker | 104 | 104 | 0 | 0 | 0 | 0 | 104 | 0 | 0 | 2024-02-08 21:10:00 | 2024-02-29 21:44:00 | Map | |
| 14555 | 2024-01-31 20:12:46 | Roelof Bakker | 27 | 27 | 0 | 0 | 0 | 0 | 27 | 0 | 0 | 2024-01-21 04:30:00 | 2024-01-31 03:20:00 | Map | |
| 14414 | 2024-01-22 08:42:33 | Roelof Bakker | 6 | 6 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 2024-01-15 16:00:00 | 2024-01-15 17:30:00 | Map | |
| 14371 | 2024-01-18 15:43:55 | Roelof Bakker | 4 | 4 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 2024-01-16 01:00:00 | 2024-01-16 01:40:00 | Map | |
| 14366 | 2024-01-18 15:36:00 | Roelof Bakker | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 2024-01-14 06:56:00 | 2024-01-14 16:30:00 | Map | |
| 14332 | 2024-01-14 08:46:45 | Roelof Bakker | 7 | 7 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 2024-01-13 06:20:00 | 2024-01-13 07:40:00 | Map | |
| 14318 | 2024-01-12 11:34:34 | Roelof Bakker | 46 | 46 | 0 | 0 | 0 | 0 | 46 | 0 | 0 | 2024-01-08 19:40:00 | 2024-01-08 21:30:00 | Map | |
| 14315 | 2024-01-12 11:28:04 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2024-01-08 22:00:00 | 2024-01-08 22:00:00 | Map | |
| 14313 | 2024-01-12 11:23:37 | Roelof Bakker | 46 | 46 | 0 | 0 | 0 | 0 | 46 | 0 | 0 | 2024-01-08 22:00:00 | 2024-01-08 22:00:00 | Map | |
| 14308 | 2024-01-12 11:03:49 | Roelof Bakker | 68 | 68 | 0 | 0 | 0 | 0 | 68 | 0 | 0 | 2024-01-04 21:00:00 | 2024-01-04 23:30:00 | Map | |
| 14247 | 2024-01-05 11:00:39 | Roelof Bakker | 151 | 151 | 0 | 0 | 0 | 0 | 151 | 0 | 0 | 2024-01-01 06:35:00 | 2024-01-01 06:35:00 | Map | |
| 14146 | 2023-12-29 11:14:39 | Roelof Bakker | 29 | 29 | 0 | 0 | 0 | 0 | 29 | 0 | 0 | 2023-12-19 21:00:00 | 2023-12-19 21:30:00 | Map | |
| 14094 | 2023-12-19 20:22:53 | Roelof Bakker | 2 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 2023-12-10 23:10:00 | 2023-12-14 07:00:00 | Map | |
| 13973 | 2023-12-09 20:12:45 | Roelof Bakker | 8 | 8 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 2023-11-24 00:33:00 | 2023-12-01 20:40:00 | Map | |
| 13838 | 2023-11-23 11:32:19 | Roelof Bakker | 30 | 30 | 0 | 0 | 0 | 0 | 30 | 0 | 0 | 2023-11-03 00:20:00 | 2023-11-15 02:00:00 | Map | |
| 13834 | 2023-11-23 11:24:05 | Roelof Bakker | 25 | 25 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 2023-11-17 18:30:00 | 2023-11-18 03:39:00 | Map | |
| 13659 | 2023-11-03 11:49:04 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-10-20 22:20:00 | 2023-10-20 22:20:00 | Map | |
| 13655 | 2023-11-03 11:25:47 | Roelof Bakker | 58 | 58 | 0 | 0 | 0 | 0 | 58 | 0 | 0 | 2023-10-09 19:40:00 | 2023-10-30 22:20:00 | Map | |
| 13358 | 2023-10-05 06:25:52 | Roelof Bakker | 16 | 16 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 2023-09-20 20:20:00 | 2023-09-25 22:00:00 | Map | |
| 13222 | 2023-09-15 06:48:21 | Roelof Bakker | 3 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 2023-09-12 05:13:00 | 2023-09-12 05:13:00 | Map | |
| 13120 | 2023-09-02 15:23:55 | Roelof Bakker | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2023-08-31 21:00:00 | 2023-08-31 21:00:00 | Map | |
| 13109 | 2023-09-01 15:12:08 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-08-31 04:46:00 | 2023-08-31 04:46:00 | Map | |
| 13034 | 2023-08-26 03:26:09 | Roelof Bakker | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 2023-08-23 22:00:00 | 2023-08-24 00:40:00 | Map | |
| 13022 | 2023-08-24 06:00:53 | Roelof Bakker | 16 | 16 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 2023-08-20 21:40:00 | 2023-08-21 02:00:00 | Map | |
| 13003 | 2023-08-22 15:33:20 | Roelof Bakker | 16 | 16 | 0 | 0 | 0 | 0 | 16 | 0 | 0 | 2023-08-17 22:00:00 | 2023-08-17 22:40:00 | Map | |
| 12971 | 2023-08-18 15:06:04 | Roelof Bakker | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2023-08-14 00:20:00 | 2023-08-14 00:40:00 | Map | |
| 12955 | 2023-08-14 15:38:33 | Roelof Bakker | 9 | 9 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 2023-08-12 22:20:00 | 2023-08-12 23:59:00 | Map | |
| 12941 | 2023-08-11 16:02:07 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-08-07 23:59:00 | 2023-08-07 23:59:00 | Map | |
| 12940 | 2023-08-11 16:00:32 | Roelof Bakker | 179 | 179 | 0 | 0 | 0 | 0 | 179 | 0 | 0 | 2023-08-07 23:59:00 | 2023-08-07 23:59:00 | Map | |
| 12934 | 2023-08-10 03:39:11 | Roelof Bakker | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 2023-08-07 22:20:00 | 2023-08-07 23:59:00 | Map | |
| 12933 | 2023-08-10 03:36:39 | Roelof Bakker | 20 | 20 | 0 | 0 | 0 | 0 | 20 | 0 | 0 | 2023-08-07 21:00:00 | 2023-08-07 23:59:00 | Map | |
| 12903 | 2023-08-05 07:54:19 | Roelof Bakker | 55 | 55 | 0 | 0 | 0 | 0 | 55 | 0 | 0 | 2023-08-02 21:40:00 | 2023-08-02 23:00:00 | Map | |
| 12900 | 2023-08-05 07:48:01 | Roelof Bakker | 7 | 7 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 2023-08-02 21:40:00 | 2023-08-02 22:00:00 | Map | |
| 12898 | 2023-08-05 07:43:43 | Roelof Bakker | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2023-08-01 20:40:00 | 2023-08-01 21:20:00 | Map | |
| 12880 | 2023-08-02 08:20:34 | Roelof Bakker | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2023-07-16 23:51:00 | 2023-07-17 00:20:00 | Map | |
| 12819 | 2023-07-24 15:31:54 | Roelof Bakker | 71 | 72 | 0 | 0 | 0 | 0 | 72 | 0 | 0 | 2023-07-16 22:00:00 | 2023-07-17 00:51:00 | Map | |
| 12430 | 2023-05-29 03:52:08 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-05-20 01:20:00 | 2023-05-20 01:20:00 | Map | |
| 12424 | 2023-05-29 03:37:15 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-05-07 21:00:00 | 2023-05-07 21:00:00 | Map | |
| 12423 | 2023-05-29 03:36:43 | Roelof Bakker | 17 | 17 | 0 | 0 | 0 | 0 | 17 | 0 | 0 | 2023-05-07 21:20:00 | 2023-05-08 01:40:00 | Map | |
| 12349 | 2023-05-17 08:31:36 | Roelof Bakker | 43 | 43 | 0 | 0 | 0 | 0 | 43 | 0 | 0 | 2023-05-07 22:00:00 | 2023-05-08 01:20:00 | Map | |
| 12313 | 2023-05-05 08:12:35 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-05-01 00:00:00 | 2023-05-01 00:00:00 | Map | |
| 12312 | 2023-05-05 08:10:18 | Roelof Bakker | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 2023-04-30 22:00:00 | 2023-05-01 01:20:00 | Map | |
| 12274 | 2023-04-26 16:17:36 | Roelof Bakker | 25 | 25 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 2023-04-20 22:00:00 | 2023-04-23 04:10:00 | Map | |
| 12248 | 2023-04-26 15:11:38 | Roelof Bakker | 17 | 17 | 0 | 0 | 0 | 0 | 17 | 0 | 0 | 2023-04-16 21:00:00 | 2023-04-17 00:40:00 | Map | |
| 12152 | 2023-04-14 15:58:59 | Roelof Bakker | 9 | 9 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 2023-04-11 03:00:00 | 2023-04-11 03:00:00 | Map | |
| 12149 | 2023-04-14 15:55:09 | Roelof Bakker | 8 | 8 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 2023-04-10 19:40:00 | 2023-04-11 03:00:00 | Map | |
| 12107 | 2023-04-08 16:14:31 | Roelof Bakker | 11 | 11 | 0 | 0 | 0 | 0 | 11 | 0 | 0 | 2023-04-06 21:00:00 | 2023-04-06 22:40:00 | Map | |
| 12106 | 2023-04-08 16:06:23 | Roelof Bakker | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 2023-04-05 21:05:00 | 2023-04-05 22:00:00 | Map | |
| 12104 | 2023-04-08 15:58:12 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-04-05 17:40:00 | 2023-04-05 17:40:00 | Map | |
| 12079 | 2023-04-04 06:30:26 | Roelof Bakker | 7 | 7 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 2023-03-27 19:20:00 | 2023-03-28 22:00:00 | Map | |
| 11996 | 2023-03-27 03:31:57 | Roelof Bakker | 9 | 9 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 2023-03-20 00:20:00 | 2023-03-20 00:20:00 | Map | |
| 11978 | 2023-03-23 16:47:49 | Roelof Bakker | 59 | 59 | 0 | 0 | 0 | 0 | 59 | 0 | 0 | 2023-03-20 20:00:00 | 2023-03-21 02:00:00 | Map | |
| 11952 | 2023-03-20 16:20:58 | Roelof Bakker | 25 | 25 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 2023-03-13 22:20:00 | 2023-03-15 00:20:00 | Map | |
| 11950 | 2023-03-20 16:16:52 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-03-16 22:00:00 | 2023-03-16 22:00:00 | Map | |
| 11947 | 2023-03-20 16:05:10 | Roelof Bakker | 4 | 4 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 2023-03-16 22:00:00 | 2023-03-16 22:20:00 | Map | |
| 11917 | 2023-03-17 07:27:54 | Roelof Bakker | 9 | 9 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 2023-03-11 22:40:00 | 2023-03-12 03:00:00 | Map | |
| 11886 | 2023-03-12 06:47:02 | Roelof Bakker | 25 | 25 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 2023-03-04 00:09:00 | 2023-03-04 02:00:00 | Map | |
| 11885 | 2023-03-12 06:45:50 | Roelof Bakker | 22 | 22 | 0 | 0 | 0 | 0 | 22 | 0 | 0 | 2023-03-03 22:00:00 | 2023-03-04 02:00:00 | Map | |
| 11884 | 2023-03-12 06:44:19 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-03-04 01:40:00 | 2023-03-04 01:40:00 | Map | |
| 11872 | 2023-03-08 09:11:40 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2023-03-08 05:50:00 | 2023-03-08 05:50:00 | Map | |
| 11832 | 2023-03-03 06:28:46 | Roelof Bakker | 18 | 18 | 0 | 0 | 0 | 0 | 18 | 0 | 0 | 2023-02-24 21:40:00 | 2023-02-25 02:00:00 | Map | |
| 11827 | 2023-03-03 06:17:35 | Roelof Bakker | 28 | 28 | 0 | 0 | 0 | 0 | 28 | 0 | 0 | 2023-02-24 22:00:00 | 2023-02-25 03:40:00 | Map | |
| 11723 | 2023-02-22 13:26:13 | Roelof Bakker | 8 | 8 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 2023-02-18 22:00:00 | 2023-02-19 03:40:00 | Map | |
| 11676 | 2023-02-15 06:34:24 | Roelof Bakker | 25 | 25 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 2023-02-13 19:20:00 | 2023-02-13 23:40:00 | Map | |
| 11671 | 2023-02-15 06:02:16 | Roelof Bakker | 28 | 28 | 0 | 0 | 0 | 0 | 28 | 0 | 0 | 2023-02-09 18:00:00 | 2023-02-09 23:40:00 | Map | |
| 11634 | 2023-02-07 09:05:49 | Roelof Bakker | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 2023-02-01 23:00:00 | 2023-02-02 02:40:00 | Map | |
| 11630 | 2023-02-07 08:43:49 | Roelof Bakker | 79 | 79 | 0 | 0 | 0 | 0 | 79 | 0 | 0 | 2023-02-01 20:00:00 | 2023-02-01 20:00:00 | Map | |
| 11628 | 2023-02-07 08:03:38 | Roelof Bakker | 67 | 67 | 0 | 0 | 0 | 0 | 67 | 0 | 0 | 2023-02-01 20:00:00 | 2023-02-01 20:00:00 | Map | |
| 11626 | 2023-02-07 07:58:13 | Roelof Bakker | 74 | 74 | 0 | 0 | 0 | 0 | 74 | 0 | 0 | 2023-02-01 20:00:00 | 2023-02-01 20:00:00 | Map | |
| 11587 | 2023-02-02 10:25:44 | Roelof Bakker | 85 | 85 | 0 | 0 | 0 | 0 | 85 | 0 | 0 | 2023-02-01 20:00:00 | 2023-02-01 20:00:00 | Map | |
| 11479 | 2023-01-24 11:17:30 | Roelof Bakker | 4 | 4 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 2023-01-23 07:30:00 | 2023-01-23 07:30:00 | Map | |
| 11476 | 2023-01-24 11:05:04 | Roelof Bakker | 59 | 59 | 0 | 0 | 0 | 0 | 59 | 0 | 0 | 2023-01-17 00:01:00 | 2023-01-17 06:20:00 | Map | |
| 11422 | 2023-01-16 16:09:01 | Roelof Bakker | 3 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 2023-01-15 02:00:00 | 2023-01-15 04:00:00 | Map | |
| 11400 | 2023-01-15 03:24:01 | Roelof Bakker | 40 | 41 | 0 | 0 | 0 | 0 | 41 | 0 | 0 | 2023-01-13 22:40:00 | 2023-01-14 00:40:00 | Map | |
| 11368 | 2023-01-12 05:56:24 | Roelof Bakker | 7 | 7 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 2023-01-02 18:20:00 | 2023-01-03 01:20:00 | Map | |
| 11265 | 2022-12-31 15:50:02 | Roelof Bakker | 91 | 97 | 0 | 0 | 0 | 0 | 97 | 0 | 0 | 2022-12-27 18:20:00 | 2022-12-28 04:20:00 | Map | |
| 11228 | 2022-12-26 11:52:23 | Roelof Bakker | 56 | 56 | 0 | 0 | 0 | 0 | 56 | 0 | 0 | 2022-12-21 17:25:00 | 2022-12-24 04:00:00 | Map | |
| 9655 | 2022-06-29 06:55:10 | Roelof Bakker | 21 | 21 | 0 | 0 | 0 | 0 | 21 | 0 | 0 | 2022-06-25 00:01:00 | 2022-06-25 01:40:00 | Map | |
| 9654 | 2022-06-29 06:54:09 | Roelof Bakker | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2022-06-25 00:01:00 | 2022-06-25 00:01:00 | Map | |
| 9653 | 2022-06-29 06:52:28 | Roelof Bakker | 201 | 201 | 0 | 0 | 0 | 0 | 201 | 0 | 0 | 2022-06-25 00:01:00 | 2022-06-25 01:40:00 | Map | |
| 9590 | 2022-06-19 13:30:25 | Roelof Bakker | 13 | 13 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 2022-06-16 00:20:00 | 2022-06-16 00:40:00 | Map | |
| 9589 | 2022-06-19 13:28:59 | Roelof Bakker | 26 | 26 | 0 | 0 | 0 | 0 | 26 | 0 | 0 | 2022-06-15 23:00:00 | 2022-06-16 00:40:00 | Map | |
| 9546 | 2022-06-12 03:36:29 | Roelof Bakker | 15 | 15 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 2022-06-07 21:00:00 | 2022-06-08 00:20:00 | Map | |
| 9544 | 2022-06-12 03:28:21 | Roelof Bakker | 3 | 3 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 2022-06-05 00:01:00 | 2022-06-05 01:00:00 | Map | |
| 9504 | 2022-06-05 13:14:14 | Roelof Bakker | 92 | 92 | 0 | 0 | 0 | 0 | 92 | 0 | 0 | 2022-05-31 00:00:00 | 2022-05-31 00:00:00 | Map | |
| 9499 | 2022-06-05 08:28:07 | Roelof Bakker | 85 | 85 | 0 | 0 | 0 | 0 | 85 | 0 | 0 | 2022-05-30 21:00:00 | 2022-05-30 21:00:00 | Map | |
| 9443 | 2022-05-31 08:07:28 | Roelof Bakker | 6 | 6 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 2022-05-28 00:01:00 | 2022-05-28 02:00:00 | Map | |
| 9387 | 2022-05-22 13:28:38 | Roelof Bakker | 14 | 14 | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 2022-05-17 22:20:00 | 2022-05-18 00:20:00 | Map | |
| 9386 | 2022-05-22 13:27:42 | Roelof Bakker | 7 | 7 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 2022-05-16 21:40:00 | 2022-05-16 23:40:00 | Map | |
| 9350 | 2022-05-15 05:33:25 | Roelof Bakker | 64 | 64 | 0 | 0 | 0 | 0 | 64 | 0 | 0 | 2022-05-13 22:00:00 | 2022-05-14 00:40:00 | Map | |
| 9349 | 2022-05-15 05:32:17 | Roelof Bakker | 21 | 21 | 0 | 0 | 0 | 0 | 21 | 0 | 0 | 2022-05-13 20:00:00 | 2022-05-13 20:20:00 | Map | |
| 9346 | 2022-05-15 05:27:23 | Roelof Bakker | 15 | 16 | 0 | 0 | 0 | 0 | 15 | 0 | 0 | 2022-05-09 23:00:00 | 2022-05-10 02:00:00 | Map | |
| 9345 | 2022-05-15 05:25:58 | Roelof Bakker | 6 | 6 | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 2022-05-08 22:00:00 | 2022-05-09 00:40:00 | Map | |
| 9297 | 2022-05-08 10:23:10 | Roelof Bakker | 4 | 4 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 2022-05-06 23:20:00 | 2022-05-07 02:00:00 | Map | |
| 9296 | 2022-05-08 10:21:59 | Roelof Bakker | 29 | 29 | 0 | 0 | 0 | 0 | 29 | 0 | 0 | 2022-05-05 23:00:00 | 2022-05-06 01:40:00 | Map | |
| 9295 | 2022-05-08 10:20:23 | Roelof Bakker | 9 | 9 | 0 | 0 | 0 | 0 | 9 | 0 | 0 | 2022-05-06 00:01:00 | 2022-05-06 01:40:00 | Map |
Log Sessions | Paul Newland, Rattery, ENG - IO80ck