Recorded chokepoint passages for Algoma Compass, 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/algoma-compass/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:316036229:2025-12-21T01:57:45ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) downbound on 20 Dec 2025 20:57 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 21 Dec 2025 01:57:45 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-20T00:54:46ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 19 Dec 2025 19:54 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, 20 Dec 2025 00:54:46 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316036229:2025-12-19T11:08:41ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 19 Dec 2025 06:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 19 Dec 2025 11:08:41 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316036229:2025-12-17T19:53:04ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 17 Dec 2025 14:53 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, 17 Dec 2025 19:53:04 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-17T14:01:38ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 17 Dec 2025 09:01 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 17 Dec 2025 14:01:38 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316036229:2025-12-16T11:55:26ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) upbound on 16 Dec 2025 06:55 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, 16 Dec 2025 11:55:26 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316036229:2025-12-14T22:31:08ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) downbound on 14 Dec 2025 17:31 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, 14 Dec 2025 22:31:08 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-13T22:34:46ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 13 Dec 2025 17:34 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 22:34:46 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316036229:2025-12-13T13:41:16ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 13 Dec 2025 08:41 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 13:41:16 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-12T03:30:23ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 11 Dec 2025 22:30 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, 12 Dec 2025 03:30:23 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316036229:2025-12-11T01:40:47ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) upbound on 10 Dec 2025 20:40 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 11 Dec 2025 01:40:47 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316036229:2025-12-09T12:31:25ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) downbound on 9 Dec 2025 07:31 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, 09 Dec 2025 12:31:25 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-08T10:54:55ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 8 Dec 2025 05:54 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, 08 Dec 2025 10:54:55 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316036229:2025-12-08T05:28:05ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 8 Dec 2025 00:28 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, 08 Dec 2025 05:28:05 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316036229:2025-12-06T01:43:26ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 5 Dec 2025 20:43 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 01:43:26 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-05T20:06:54ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 5 Dec 2025 15:06 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, 05 Dec 2025 20:06:54 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316036229:2025-12-02T20:07:09ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 2 Dec 2025 15:07 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, 02 Dec 2025 20:07:09 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316036229:2025-12-02T12:44:06ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 2 Dec 2025 07:44 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, 02 Dec 2025 12:44:06 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-25T17:53:57ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 25 Nov 2025 12:53 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, 25 Nov 2025 17:53:57 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316036229:2025-11-25T06:13:40ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 25 Nov 2025 01:13 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, 25 Nov 2025 06:13:40 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316036229:2025-11-24T14:17:27ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 24 Nov 2025 09:17 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, 24 Nov 2025 14:17:27 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-24T05:56:37ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 24 Nov 2025 00:56 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 24 Nov 2025 05:56:37 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316036229:2025-11-20T15:45:40ZAlgoma Compass (Algoma Central) crossed Straits of Mackinac eastbound on 20 Nov 2025 10:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 15:45:40 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316036229:2025-11-18T14:09:39ZAlgoma Compass (Algoma Central) crossed Straits of Mackinac westbound on 18 Nov 2025 09:09 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 14:09:39 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-16T16:00:58ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 16 Nov 2025 11:00 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, 16 Nov 2025 16:00:58 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316036229:2025-11-16T08:48:43ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 16 Nov 2025 03:48 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, 16 Nov 2025 08:48:43 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316036229:2025-11-16T02:24:07ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 15 Nov 2025 21:24 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, 16 Nov 2025 02:24:07 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-15T20:30:18ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 15 Nov 2025 15:30 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, 15 Nov 2025 20:30:18 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-08T14:57:53ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 8 Nov 2025 09:57 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 08 Nov 2025 14:57:53 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-08T06:01:57ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 8 Nov 2025 01:01 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 08 Nov 2025 06:01:57 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316036229:2025-11-06T15:46:42ZAlgoma Compass (Algoma Central) crossed Straits of Mackinac eastbound on 6 Nov 2025 10:46 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, 06 Nov 2025 15:46:42 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316036229:2025-11-03T08:10:18ZAlgoma Compass (Algoma Central) crossed Straits of Mackinac westbound on 3 Nov 2025 03:10 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, 03 Nov 2025 08:10:18 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316036229:2025-11-01T02:32:48ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 31 Oct 2025 22:32 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 01 Nov 2025 02:32:48 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316036229:2025-10-31T18:43:54ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 31 Oct 2025 14:43 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 31 Oct 2025 18:43:54 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316036229:2025-10-31T06:17:41ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 31 Oct 2025 02:17 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 31 Oct 2025 06:17:41 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316036229:2025-10-31T00:08:12ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 30 Oct 2025 20:08 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 00:08:12 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316036229:2025-10-29T12:12:42ZAlgoma Compass (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 29 Oct 2025 08:12 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, 29 Oct 2025 12:12:42 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316036229:2025-10-29T06:27:58ZAlgoma Compass (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 29 Oct 2025 02:27 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, 29 Oct 2025 06:27:58 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316036229:2025-10-28T06:25:22ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) upbound on 28 Oct 2025 02:25 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, 28 Oct 2025 06:25:22 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316036229:2025-10-26T19:10:22ZAlgoma Compass (Algoma Central) crossed Welland Canal (Thorold) downbound on 26 Oct 2025 15:10 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, 26 Oct 2025 19:10:22 GMT