Recorded chokepoint passages for John G Munson, 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/john-g-munson/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:366971360:2025-12-28T00:39:43ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac westbound on 27 Dec 2025 19:39 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 00:39:43 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-27T16:25:02ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 27 Dec 2025 11:25 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 27 Dec 2025 16:25:02 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366971360:2025-12-26T13:04:41ZJohn G Munson (Great Lakes Fleet) crossed Duluth Ship Canal outbound on 26 Dec 2025 07:04 CST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Dec 2025 13:04:41 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366971360:2025-12-26T01:44:39ZJohn G Munson (Great Lakes Fleet) crossed Duluth Ship Canal inbound on 25 Dec 2025 19:44 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, 26 Dec 2025 01:44:39 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-24T09:02:43ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 24 Dec 2025 04:02 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, 24 Dec 2025 09:02:43 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971360:2025-12-24T00:45:01ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 23 Dec 2025 19:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Dec 2025 00:45:01 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971360:2025-12-21T16:38:56ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac westbound on 21 Dec 2025 11:38 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, 21 Dec 2025 16:38:56 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-18T17:48:39ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 18 Dec 2025 12:48 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 18 Dec 2025 17:48:39 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-15T16:10:54ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 15 Dec 2025 11:10 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, 15 Dec 2025 16:10:54 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971360:2025-12-15T08:37:19ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 15 Dec 2025 03:37 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, 15 Dec 2025 08:37:19 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971360:2025-12-12T17:27:18ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac westbound on 12 Dec 2025 12:27 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, 12 Dec 2025 17:27:18 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-12T09:41:08ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 12 Dec 2025 04:41 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 12 Dec 2025 09:41:08 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-09T09:11:45ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 9 Dec 2025 04:11 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 09 Dec 2025 09:11:45 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366971360:2025-12-08T13:33:31ZJohn G Munson (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 8 Dec 2025 08:33 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, 08 Dec 2025 13:33:31 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366971360:2025-12-08T08:08:56ZJohn G Munson (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge upbound on 8 Dec 2025 03:08 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, 08 Dec 2025 08:08:56 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366971360:2025-12-03T23:27:26ZJohn G Munson (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge downbound on 3 Dec 2025 18:27 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 03 Dec 2025 23:27:26 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366971360:2025-12-03T17:45:03ZJohn G Munson (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 3 Dec 2025 12:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 03 Dec 2025 17:45:03 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366971360:2025-12-02T18:46:29ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 2 Dec 2025 13:46 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 02 Dec 2025 18:46:29 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-29T20:36:01ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 29 Nov 2025 15:36 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 20:36:01 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366971360:2025-11-28T23:17:43ZJohn G Munson (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 28 Nov 2025 18:17 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 28 Nov 2025 23:17:43 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366971360:2025-11-28T17:12:16ZJohn G Munson (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge upbound on 28 Nov 2025 12:12 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 28 Nov 2025 17:12:16 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366971360:2025-11-25T09:23:47ZJohn G Munson (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge downbound on 25 Nov 2025 04:23 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 25 Nov 2025 09:23:47 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366971360:2025-11-25T04:13:53ZJohn G Munson (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 24 Nov 2025 23:13 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 04:13:53 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-24T07:26:05ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 24 Nov 2025 02:26 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 24 Nov 2025 07:26:05 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-20T21:17:18ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 20 Nov 2025 16:17 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 21:17:18 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366971360:2025-11-20T14:03:49ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 20 Nov 2025 09:03 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 14:03:49 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366971360:2025-11-18T06:17:14ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac westbound on 18 Nov 2025 01:17 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 18 Nov 2025 06:17:14 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-17T22:44:45ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 17 Nov 2025 17:44 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 17 Nov 2025 22:44:45 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:366971360:2025-11-15T17:43:17ZJohn G Munson (Great Lakes Fleet) crossed Duluth Ship Canal outbound on 15 Nov 2025 11:43 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 17:43:17 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:366971360:2025-11-15T00:13:22ZJohn G Munson (Great Lakes Fleet) crossed Duluth Ship Canal inbound on 14 Nov 2025 18:13 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 00:13:22 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-13T20:46:40ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 13 Nov 2025 15:46 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, 13 Nov 2025 20:46:40 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366971360:2025-11-11T08:33:34ZJohn G Munson (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge upbound on 11 Nov 2025 03:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 11 Nov 2025 08:33:34 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366971360:2025-11-10T20:03:51ZJohn G Munson (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge upbound on 10 Nov 2025 15:03 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 20:03:51 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366971360:2025-11-09T14:43:38ZJohn G Munson (Great Lakes Fleet) crossed Detroit River / Ambassador Bridge downbound on 9 Nov 2025 09:43 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 14:43:38 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366971360:2025-11-09T09:09:30ZJohn G Munson (Great Lakes Fleet) crossed Port Huron / Blue Water Bridge downbound on 9 Nov 2025 04:09 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 09:09:30 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-08T13:43:31ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) downbound on 8 Nov 2025 08:43 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, 08 Nov 2025 13:43:31 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:366971360:2025-11-06T07:17:24ZJohn G Munson (Great Lakes Fleet) crossed Duluth Ship Canal outbound on 6 Nov 2025 01:17 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 07:17:24 GMThttps://freighterlog.com/log/duluth-canal/2025-11/freighterlog:passage:366971360:2025-11-05T22:11:49ZJohn G Munson (Great Lakes Fleet) crossed Duluth Ship Canal inbound on 5 Nov 2025 16:11 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, 05 Nov 2025 22:11:49 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366971360:2025-11-04T15:37:54ZJohn G Munson (Great Lakes Fleet) crossed Soo Locks (St. Marys River) upbound on 4 Nov 2025 10:37 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 15:37:54 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366971360:2025-11-01T10:09:20ZJohn G Munson (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 1 Nov 2025 06:09 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 01 Nov 2025 10:09:20 GMT