Recorded chokepoint passages for James R Barker, 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/james-r-barker/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/soo/2025-12/freighterlog:passage:366905890:2025-12-31T07:58:51ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 31 Dec 2025 02:58 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, 31 Dec 2025 07:58:51 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366905890:2025-12-28T09:27:14ZJames R Barker (The Interlake Steamship Company) crossed Duluth Ship Canal outbound on 28 Dec 2025 03:27 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, 28 Dec 2025 09:27:14 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366905890:2025-12-27T11:45:11ZJames R Barker (The Interlake Steamship Company) crossed Duluth Ship Canal inbound on 27 Dec 2025 05:45 CST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 27 Dec 2025 11:45:11 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366905890:2025-12-26T03:20:54ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 25 Dec 2025 22:20 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Dec 2025 03:20:54 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366905890:2025-12-25T05:46:32ZJames R Barker (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 25 Dec 2025 00:46 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, 25 Dec 2025 05:46:32 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366905890:2025-12-25T00:15:50ZJames R Barker (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 24 Dec 2025 19:15 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 00:15:50 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366905890:2025-12-23T21:22:57ZJames R Barker (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 23 Dec 2025 16:22 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, 23 Dec 2025 21:22:57 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366905890:2025-12-23T15:27:36ZJames R Barker (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 23 Dec 2025 10:27 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 23 Dec 2025 15:27:36 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366905890:2025-12-22T17:05:35ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 22 Dec 2025 12:05 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 17:05:35 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366905890:2025-12-21T05:01:13ZJames R Barker (The Interlake Steamship Company) crossed Duluth Ship Canal outbound on 20 Dec 2025 23:01 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, 21 Dec 2025 05:01:13 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366905890:2025-12-18T16:31:24ZJames R Barker (The Interlake Steamship Company) crossed Duluth Ship Canal inbound on 18 Dec 2025 10:31 CST. 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 16:31:24 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366905890:2025-12-16T10:00:09ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 16 Dec 2025 05:00 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 16 Dec 2025 10:00:09 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366905890:2025-12-16T00:51:15ZJames R Barker (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 15 Dec 2025 19:51 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 16 Dec 2025 00:51:15 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366905890:2025-12-10T03:30:35ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 9 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.Wed, 10 Dec 2025 03:30:35 GMThttps://freighterlog.com/log/superior-entry/2025-12/freighterlog:passage:366905890:2025-12-08T14:04:38ZJames R Barker (The Interlake Steamship Company) crossed Superior Entry outbound on 8 Dec 2025 08:04 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, 08 Dec 2025 14:04:38 GMThttps://freighterlog.com/log/superior-entry/2025-12/freighterlog:passage:366905890:2025-12-07T22:49:17ZJames R Barker (The Interlake Steamship Company) crossed Superior Entry inbound on 7 Dec 2025 16:49 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, 07 Dec 2025 22:49:17 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366905890:2025-12-05T01:30:46ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 4 Dec 2025 20:30 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, 05 Dec 2025 01:30:46 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366905890:2025-12-04T14:33:49ZJames R Barker (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 4 Dec 2025 09:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 04 Dec 2025 14:33:49 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366905890:2025-11-30T11:04:35ZJames R Barker (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 30 Nov 2025 06:04 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 30 Nov 2025 11:04:35 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366905890:2025-11-29T14:39:47ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 29 Nov 2025 09:39 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 29 Nov 2025 14:39:47 GMThttps://freighterlog.com/log/superior-entry/2025-11/freighterlog:passage:366905890:2025-11-27T15:36:56ZJames R Barker (The Interlake Steamship Company) crossed Superior Entry outbound on 27 Nov 2025 09:36 CST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 27 Nov 2025 15:36:56 GMThttps://freighterlog.com/log/superior-entry/2025-11/freighterlog:passage:366905890:2025-11-25T02:56:43ZJames R Barker (The Interlake Steamship Company) crossed Superior Entry inbound on 24 Nov 2025 20:56 CST. 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 02:56:43 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366905890:2025-11-23T20:38:36ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 23 Nov 2025 15:38 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 20:38:36 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366905890:2025-11-18T11:02:10ZJames R Barker (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 18 Nov 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.Tue, 18 Nov 2025 11:02:10 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366905890:2025-11-18T02:26:01ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 17 Nov 2025 21:26 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 18 Nov 2025 02:26:01 GMThttps://freighterlog.com/log/superior-entry/2025-11/freighterlog:passage:366905890:2025-11-15T20:27:30ZJames R Barker (The Interlake Steamship Company) crossed Superior Entry outbound on 15 Nov 2025 14:27 CST. 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 20:27:30 GMThttps://freighterlog.com/log/superior-entry/2025-11/freighterlog:passage:366905890:2025-11-15T00:47:26ZJames R Barker (The Interlake Steamship Company) crossed Superior Entry inbound on 14 Nov 2025 18:47 CST. 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 00:47:26 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366905890:2025-11-12T19:28:57ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 12 Nov 2025 14:28 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 19:28:57 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366905890:2025-11-11T13:38:37ZJames R Barker (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 11 Nov 2025 08:38 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 13:38:37 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366905890:2025-11-11T07:20:39ZJames R Barker (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 11 Nov 2025 02:20 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 11 Nov 2025 07:20:39 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366905890:2025-11-10T05:25:32ZJames R Barker (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 10 Nov 2025 00:25 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, 10 Nov 2025 05:25:32 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366905890:2025-11-09T23:06:16ZJames R Barker (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 9 Nov 2025 18:06 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 23:06:16 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366905890:2025-11-09T00:30:13ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) downbound on 8 Nov 2025 19:30 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 00:30:13 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:366905890:2025-11-07T02:34:56ZJames R Barker (The Interlake Steamship Company) crossed Duluth Ship Canal outbound on 6 Nov 2025 20:34 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, 07 Nov 2025 02:34:56 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:366905890:2025-11-06T15:19:49ZJames R Barker (The Interlake Steamship Company) crossed Duluth Ship Canal inbound on 6 Nov 2025 09:19 CST. 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 15:19:49 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366905890:2025-11-05T04:05:35ZJames R Barker (The Interlake Steamship Company) crossed Soo Locks (St. Marys River) upbound on 4 Nov 2025 23:05 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, 05 Nov 2025 04:05:35 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366905890:2025-11-03T20:08:04ZJames R Barker (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge upbound on 3 Nov 2025 15:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 03 Nov 2025 20:08:04 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366905890:2025-11-03T13:12:53ZJames R Barker (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge upbound on 3 Nov 2025 08:12 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, 03 Nov 2025 13:12:53 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366905890:2025-11-02T04:11:56ZJames R Barker (The Interlake Steamship Company) crossed Detroit River / Ambassador Bridge downbound on 2 Nov 2025 00:11 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 04:11:56 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366905890:2025-11-01T20:50:35ZJames R Barker (The Interlake Steamship Company) crossed Port Huron / Blue Water Bridge downbound on 1 Nov 2025 16:50 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 20:50:35 GMT