Recorded chokepoint passages for Herbert C Jackson, 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/herbert-c-jackson/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:366904930:2025-12-26T00:28:53ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 25 Dec 2025 19:28 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Dec 2025 00:28:53 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366904930:2025-12-25T15:49:12ZHerbert C Jackson (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 25 Dec 2025 10:49 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 15:49:12 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366904930:2025-12-23T16:12:23ZHerbert C Jackson (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 23 Dec 2025 11:12 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 23 Dec 2025 16:12:23 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366904930:2025-12-21T08:24:38ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 21 Dec 2025 03:24 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, 21 Dec 2025 08:24:38 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366904930:2025-12-18T21:49:02ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 18 Dec 2025 16:49 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 21:49:02 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366904930:2025-12-18T14:12:52ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 18 Dec 2025 09:12 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 18 Dec 2025 14:12:52 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366904930:2025-12-17T11:02:42ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 17 Dec 2025 06:02 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 11:02:42 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366904930:2025-12-17T03:31:07ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 16 Dec 2025 22:31 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 17 Dec 2025 03:31:07 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366904930:2025-12-16T03:32:49ZHerbert C Jackson (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 15 Dec 2025 22:32 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 03:32:49 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366904930:2025-12-14T18:12:34ZHerbert C Jackson (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 14 Dec 2025 13:12 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, 14 Dec 2025 18:12:34 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366904930:2025-12-12T21:11:30ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 12 Dec 2025 16:11 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 21:11:30 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366904930:2025-12-10T15:05:39ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 10 Dec 2025 10:05 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 10 Dec 2025 15:05:39 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366904930:2025-12-04T22:13:25ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 4 Dec 2025 17:13 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 04 Dec 2025 22:13:25 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366904930:2025-12-02T04:10:37ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 1 Dec 2025 23:10 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 02 Dec 2025 04:10:37 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366904930:2025-12-01T22:41:40ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 1 Dec 2025 17:41 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 01 Dec 2025 22:41:40 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366904930:2025-12-01T03:09:37ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 30 Nov 2025 22:09 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 01 Dec 2025 03:09:37 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366904930:2025-11-25T00:24:45ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 24 Nov 2025 19:24 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 25 Nov 2025 00:24:45 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366904930:2025-11-23T06:41:39ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 23 Nov 2025 01:41 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 23 Nov 2025 06:41:39 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366904930:2025-11-23T00:20:42ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 22 Nov 2025 19:20 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, 23 Nov 2025 00:20:42 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366904930:2025-11-20T18:00:39ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 20 Nov 2025 13:00 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 18:00:39 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366904930:2025-11-20T12:32:56ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 20 Nov 2025 07:32 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 12:32:56 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366904930:2025-11-19T00:31:39ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 18 Nov 2025 19:31 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 19 Nov 2025 00:31:39 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366904930:2025-11-12T16:31:47ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 12 Nov 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.Wed, 12 Nov 2025 16:31:47 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366904930:2025-11-09T11:47:15ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 9 Nov 2025 06:47 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 11:47:15 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366904930:2025-11-09T05:20:29ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 9 Nov 2025 00:20 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 05:20:29 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366904930:2025-11-07T03:08:50ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 6 Nov 2025 22:08 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, 07 Nov 2025 03:08:50 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366904930:2025-11-06T21:21:10ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 6 Nov 2025 16:21 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 06 Nov 2025 21:21:10 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366904930:2025-11-04T07:10:56ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 4 Nov 2025 02:10 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 04 Nov 2025 07:10:56 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366904930:2025-11-04T00:48:48ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 3 Nov 2025 19:48 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 04 Nov 2025 00:48:48 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366904930:2025-11-02T06:27:31ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 2 Nov 2025 01:27 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 02 Nov 2025 06:27:31 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366904930:2025-11-02T00:12:26ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 1 Nov 2025 20:12 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 02 Nov 2025 00:12:26 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366904930:2025-11-01T05:03:00ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 1 Nov 2025 01:03 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 01 Nov 2025 05:03:00 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366904930:2025-10-26T04:39:28ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 26 Oct 2025 00:39 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, 26 Oct 2025 04:39:28 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:366904930:2025-10-25T20:26:26ZHerbert C Jackson (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 25 Oct 2025 16:26 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, 25 Oct 2025 20:26:26 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:366904930:2025-10-22T03:37:04ZHerbert C Jackson (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 21 Oct 2025 23:37 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 03:37:04 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:366904930:2025-10-20T13:06:48ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 20 Oct 2025 09:06 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 13:06:48 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:366904930:2025-10-20T07:25:56ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 20 Oct 2025 03:25 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 20 Oct 2025 07:25:56 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:366904930:2025-10-19T01:05:31ZHerbert C Jackson (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 18 Oct 2025 21:05 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 19 Oct 2025 01:05:31 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:366904930:2025-10-18T19:28:02ZHerbert C Jackson (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 18 Oct 2025 15:28 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, 18 Oct 2025 19:28:02 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366904930:2025-10-17T06:26:59ZHerbert C Jackson (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 17 Oct 2025 02:26 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, 17 Oct 2025 06:26:59 GMT