Recorded chokepoint passages for Great Republic, 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/great-republic/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/mackinac/2025-12/freighterlog:passage:368183000:2025-12-28T14:54:48ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 28 Dec 2025 09:54 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 14:54:48 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:368183000:2025-12-28T05:12:51ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 28 Dec 2025 00:12 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 05:12:51 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:368183000:2025-12-25T17:43:07ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 25 Dec 2025 12:43 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 25 Dec 2025 17:43:07 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:368183000:2025-12-24T15:30:11ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 24 Dec 2025 10:30 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Dec 2025 15:30:11 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:368183000:2025-12-24T09:26:47ZGreat Republic (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge upbound on 24 Dec 2025 04:26 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, 24 Dec 2025 09:26:47 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:368183000:2025-12-23T03:05:33ZGreat Republic (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge downbound on 22 Dec 2025 22:05 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, 23 Dec 2025 03:05:33 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:368183000:2025-12-22T21:18:50ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 22 Dec 2025 16:18 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, 22 Dec 2025 21:18:50 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:368183000:2025-12-21T20:55:33ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 21 Dec 2025 15:55 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 21 Dec 2025 20:55:33 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:368183000:2025-12-14T16:31:42ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 14 Dec 2025 11:31 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 16:31:42 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:368183000:2025-12-14T07:23:33ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 14 Dec 2025 02:23 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 07:23:33 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:368183000:2025-12-10T14:18:22ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 10 Dec 2025 09:18 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, 10 Dec 2025 14:18:22 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:368183000:2025-12-08T23:53:26ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 8 Dec 2025 18:53 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 08 Dec 2025 23:53:26 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:368183000:2025-12-05T17:02:56ZGreat Republic (Great Lakes Fleet) crossed Duluth Ship Canal outbound on 5 Dec 2025 11:02 CST. 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 17:02:56 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:368183000:2025-12-03T01:32:45ZGreat Republic (Great Lakes Fleet) crossed Duluth Ship Canal inbound on 2 Dec 2025 19:32 CST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 03 Dec 2025 01:32:45 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:368183000:2025-12-01T04:00:46ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 30 Nov 2025 23:00 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 01 Dec 2025 04:00:46 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:368183000:2025-11-28T22:55:27ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 28 Nov 2025 17:55 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 28 Nov 2025 22:55:27 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:368183000:2025-11-25T14:19:01ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 25 Nov 2025 09:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 25 Nov 2025 14:19:01 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:368183000:2025-11-24T05:01:45ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 24 Nov 2025 00:01 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 24 Nov 2025 05:01:45 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:368183000:2025-11-15T19:06:44ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 15 Nov 2025 14:06 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 15 Nov 2025 19:06:44 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:368183000:2025-11-14T20:27:21ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 14 Nov 2025 15:27 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, 14 Nov 2025 20:27:21 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:368183000:2025-11-12T02:51:30ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 11 Nov 2025 21:51 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, 12 Nov 2025 02:51:30 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:368183000:2025-11-11T18:21:23ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 11 Nov 2025 13:21 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 18:21:23 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:368183000:2025-11-10T06:38:48ZGreat Republic (Great Lakes Fleet) crossed Duluth Ship Canal outbound on 10 Nov 2025 00:38 CST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 10 Nov 2025 06:38:48 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:368183000:2025-11-09T13:26:09ZGreat Republic (Great Lakes Fleet) crossed Duluth Ship Canal inbound on 9 Nov 2025 07:26 CST. 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 13:26:09 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:368183000:2025-11-08T02:47:08ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 7 Nov 2025 21:47 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 02:47:08 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:368183000:2025-11-06T04:27:16ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 5 Nov 2025 23:27 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 04:27:16 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:368183000:2025-11-05T19:52:11ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 5 Nov 2025 14:52 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, 05 Nov 2025 19:52:11 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:368183000:2025-11-02T20:07:48ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 2 Nov 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.Sun, 02 Nov 2025 20:07:48 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:368183000:2025-11-02T13:18:11ZGreat Republic (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge upbound on 2 Nov 2025 08:18 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, 02 Nov 2025 13:18:11 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:368183000:2025-11-01T18:22:23ZGreat Republic (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge downbound on 1 Nov 2025 14:22 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 18:22:23 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:368183000:2025-11-01T12:10:48ZGreat Republic (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 1 Nov 2025 08:10 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 01 Nov 2025 12:10:48 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:368183000:2025-10-30T03:54:25ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 29 Oct 2025 23:54 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, 30 Oct 2025 03:54:25 GMThttps://freighterlog.com/log/duluth-canal/2025-10/freighterlog:passage:368183000:2025-10-28T15:14:21ZGreat Republic (Great Lakes Fleet) crossed Duluth Ship Canal outbound on 28 Oct 2025 10:14 CDT. 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 15:14:21 GMThttps://freighterlog.com/log/duluth-canal/2025-10/freighterlog:passage:368183000:2025-10-28T03:30:45ZGreat Republic (Great Lakes Fleet) crossed Duluth Ship Canal inbound on 27 Oct 2025 22:30 CDT. 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 03:30:45 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:368183000:2025-10-26T21:48:05ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 26 Oct 2025 17:48 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 21:48:05 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:368183000:2025-10-26T13:19:34ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 26 Oct 2025 09:19 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 26 Oct 2025 13:19:34 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:368183000:2025-10-20T11:55:57ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 20 Oct 2025 07:55 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, 20 Oct 2025 11:55:57 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:368183000:2025-10-19T07:20:39ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 19 Oct 2025 03:20 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 19 Oct 2025 07:20:39 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:368183000:2025-10-16T14:02:44ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 16 Oct 2025 10:02 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 16 Oct 2025 14:02:44 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:368183000:2025-10-16T05:24:17ZGreat Republic (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 16 Oct 2025 01:24 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 16 Oct 2025 05:24:17 GMT