Recorded chokepoint passages for Algoterra, newest first. The record, not the map: this feed carries passages already in the archive, which ends at December 2025. Vessel data derived from the Nationwide Automatic Identification System (NOAA Office for Coastal Management, marinecadastre.gov), CC0.https://freighterlog.com/vessels/algoterra/en-usVessel data derived from the Nationwide Automatic Identification System (NOAA Office for Coastal Management, marinecadastre.gov), CC0. Transit and lock data from the St. Lawrence Seaway Management Corporation / Saint Lawrence Seaway Development Corporation public vessel-transit table (seaway-greatlakes.com).Wed, 23 Sep 2026 18:23:30 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316015050:2025-12-28T17:40:03ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 28 Dec 2025 12:40 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 17:40:03 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316015050:2025-12-18T16:57:47ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 18 Dec 2025 11:57 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 18 Dec 2025 16:57:47 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316015050:2025-12-13T19:56:16ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 13 Dec 2025 14:56 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 13 Dec 2025 19:56:16 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316015050:2025-12-06T06:45:36ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 6 Dec 2025 01:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 06 Dec 2025 06:45:36 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316015050:2025-12-01T11:12:36ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 1 Dec 2025 06:12 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 01 Dec 2025 11:12:36 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316015050:2025-11-29T17:04:16ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 29 Nov 2025 12:04 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 29 Nov 2025 17:04:16 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316015050:2025-11-26T16:39:25ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 26 Nov 2025 11:39 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 26 Nov 2025 16:39:25 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316015050:2025-11-21T11:01:25ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 21 Nov 2025 06:01 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 21 Nov 2025 11:01:25 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316015050:2025-11-20T12:19:03ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 20 Nov 2025 07:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 12:19:03 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316015050:2025-11-18T17:22:06ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 18 Nov 2025 12:22 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 18 Nov 2025 17:22:06 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316015050:2025-11-17T18:33:13ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 17 Nov 2025 13:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 17 Nov 2025 18:33:13 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316015050:2025-11-11T23:08:39ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 11 Nov 2025 18:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 11 Nov 2025 23:08:39 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316015050:2025-11-09T15:16:12ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 9 Nov 2025 10:16 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 15:16:12 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316015050:2025-10-31T00:01:53ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 30 Oct 2025 20:01 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 31 Oct 2025 00:01:53 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316015050:2025-10-22T01:15:44ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 21 Oct 2025 21:15 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 22 Oct 2025 01:15:44 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316015050:2025-10-19T20:39:20ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 19 Oct 2025 16:39 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 19 Oct 2025 20:39:20 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316015050:2025-10-19T01:09:45ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 18 Oct 2025 21:09 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 19 Oct 2025 01:09:45 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316015050:2025-10-13T21:56:30ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 13 Oct 2025 17:56 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 13 Oct 2025 21:56:30 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316015050:2025-10-12T23:23:39ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 12 Oct 2025 19:23 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 12 Oct 2025 23:23:39 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316015050:2025-10-11T04:05:15ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 11 Oct 2025 00:05 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 11 Oct 2025 04:05:15 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316015050:2025-10-10T08:03:38ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 10 Oct 2025 04:03 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 10 Oct 2025 08:03:38 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316015050:2025-10-03T23:02:49ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 3 Oct 2025 19:02 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 03 Oct 2025 23:02:49 GMThttps://freighterlog.com/log/detroit-river/2025-09/freighterlog:passage:316015050:2025-09-30T17:17:38ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 30 Sep 2025 13:17 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 30 Sep 2025 17:17:38 GMThttps://freighterlog.com/log/detroit-river/2025-09/freighterlog:passage:316015050:2025-09-28T20:04:14ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 28 Sep 2025 16:04 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Sep 2025 20:04:14 GMThttps://freighterlog.com/log/detroit-river/2025-09/freighterlog:passage:316015050:2025-09-26T06:38:30ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 26 Sep 2025 02:38 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Sep 2025 06:38:30 GMThttps://freighterlog.com/log/detroit-river/2025-09/freighterlog:passage:316015050:2025-09-24T13:43:33ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 24 Sep 2025 09:43 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Sep 2025 13:43:33 GMThttps://freighterlog.com/log/welland/2025-09/freighterlog:passage:316015050:2025-09-23T18:34:06ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 23 Sep 2025 14:34 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 23 Sep 2025 18:34:06 GMThttps://freighterlog.com/log/welland/2025-09/freighterlog:passage:316015050:2025-09-18T03:19:08ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 17 Sep 2025 23:19 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 18 Sep 2025 03:19:08 GMThttps://freighterlog.com/log/detroit-river/2025-09/freighterlog:passage:316015050:2025-09-11T10:19:51ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 11 Sep 2025 06:19 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 11 Sep 2025 10:19:51 GMThttps://freighterlog.com/log/detroit-river/2025-08/freighterlog:passage:316015050:2025-08-31T00:23:31ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 30 Aug 2025 20:23 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 31 Aug 2025 00:23:31 GMThttps://freighterlog.com/log/welland/2025-08/freighterlog:passage:316015050:2025-08-28T17:31:54ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 28 Aug 2025 13:31 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 28 Aug 2025 17:31:54 GMThttps://freighterlog.com/log/welland/2025-08/freighterlog:passage:316015050:2025-08-23T05:20:39ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 23 Aug 2025 01:20 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 23 Aug 2025 05:20:39 GMThttps://freighterlog.com/log/welland/2025-08/freighterlog:passage:316015050:2025-08-19T21:24:55ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 19 Aug 2025 17:24 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 19 Aug 2025 21:24:55 GMThttps://freighterlog.com/log/welland/2025-08/freighterlog:passage:316015050:2025-08-12T08:09:56ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 12 Aug 2025 04:09 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 12 Aug 2025 08:09:56 GMThttps://freighterlog.com/log/detroit-river/2025-08/freighterlog:passage:316015050:2025-08-03T01:47:40ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 2 Aug 2025 21:47 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 03 Aug 2025 01:47:40 GMThttps://freighterlog.com/log/detroit-river/2025-07/freighterlog:passage:316015050:2025-07-30T02:58:13ZAlgoterra (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 29 Jul 2025 22:58 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 30 Jul 2025 02:58:13 GMThttps://freighterlog.com/log/welland/2025-07/freighterlog:passage:316015050:2025-07-29T05:31:05ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 29 Jul 2025 01:31 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 29 Jul 2025 05:31:05 GMThttps://freighterlog.com/log/welland/2025-07/freighterlog:passage:316015050:2025-07-24T06:47:04ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 24 Jul 2025 02:47 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 24 Jul 2025 06:47:04 GMThttps://freighterlog.com/log/welland/2025-07/freighterlog:passage:316015050:2025-07-20T16:13:22ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) upbound on 20 Jul 2025 12:13 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 20 Jul 2025 16:13:22 GMThttps://freighterlog.com/log/welland/2025-07/freighterlog:passage:316015050:2025-07-14T10:32:05ZAlgoterra (Algoma Central) crossed Welland Canal (Thorold) downbound on 14 Jul 2025 06:32 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 14 Jul 2025 10:32:05 GMT