Recorded chokepoint passages for Manitowoc, 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/manitowoc/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/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-25T20:43:01ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 25 Dec 2025 15:43 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 20:43:01 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:367341010:2025-12-25T15:31:36ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 25 Dec 2025 10:31 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 25 Dec 2025 15:31:36 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367341010:2025-12-24T17:37:28ZManitowoc crossed Straits of Mackinac eastbound on 24 Dec 2025 12:37 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Dec 2025 17:37:28 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367341010:2025-12-23T15:06:58ZManitowoc crossed Straits of Mackinac westbound on 23 Dec 2025 10:06 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 23 Dec 2025 15:06:58 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:367341010:2025-12-23T07:12:17ZManitowoc crossed Soo Locks (St. Marys River) downbound on 23 Dec 2025 02:12 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 07:12:17 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:367341010:2025-12-22T23:10:43ZManitowoc crossed Soo Locks (St. Marys River) upbound on 22 Dec 2025 18:10 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, 22 Dec 2025 23:10:43 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367341010:2025-12-22T13:30:52ZManitowoc crossed Straits of Mackinac eastbound on 22 Dec 2025 08:30 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 13:30:52 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367341010:2025-12-21T17:21:58ZManitowoc crossed Straits of Mackinac westbound on 21 Dec 2025 12:21 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 21 Dec 2025 17:21:58 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:367341010:2025-12-19T02:13:53ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 18 Dec 2025 21:13 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 19 Dec 2025 02:13:53 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-18T21:16:15ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 18 Dec 2025 16:16 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 21:16:15 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-16T06:06:00ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 16 Dec 2025 01:06 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 16 Dec 2025 06:06:00 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:367341010:2025-12-16T00:52:31ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 15 Dec 2025 19:52 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 16 Dec 2025 00:52:31 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:367341010:2025-12-13T03:02:40ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 12 Dec 2025 22:02 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 13 Dec 2025 03:02:40 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-12T21:38:13ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 12 Dec 2025 16:38 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 12 Dec 2025 21:38:13 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-11T00:58:14ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 10 Dec 2025 19:58 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 11 Dec 2025 00:58:14 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:367341010:2025-12-10T19:38:25ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 10 Dec 2025 14:38 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 10 Dec 2025 19:38:25 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367341010:2025-12-07T22:36:02ZManitowoc crossed Straits of Mackinac eastbound on 7 Dec 2025 17:36 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 07 Dec 2025 22:36:02 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367341010:2025-12-06T01:50:51ZManitowoc crossed Straits of Mackinac westbound on 5 Dec 2025 20:50 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 01:50:51 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-05T00:48:19ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 4 Dec 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.Fri, 05 Dec 2025 00:48:19 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:367341010:2025-12-02T01:30:56ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 1 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.Tue, 02 Dec 2025 01:30:56 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:367341010:2025-12-01T20:10:15ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 1 Dec 2025 15:10 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, 01 Dec 2025 20:10:15 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:367341010:2025-11-29T20:53:51ZManitowoc crossed Straits of Mackinac eastbound on 29 Nov 2025 15:53 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 29 Nov 2025 20:53:51 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:367341010:2025-11-24T06:35:47ZManitowoc crossed Straits of Mackinac westbound on 24 Nov 2025 01:35 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 06:35:47 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-22T20:02:21ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 22 Nov 2025 15:02 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 22 Nov 2025 20:02:21 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-22T14:39:43ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 22 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, 22 Nov 2025 14:39:43 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-22T00:39:19ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 21 Nov 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.Sat, 22 Nov 2025 00:39:19 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-21T19:24:48ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 21 Nov 2025 14:24 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 21 Nov 2025 19:24:48 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-20T10:02:40ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 20 Nov 2025 05:02 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 10:02:40 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-20T04:28:43ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 19 Nov 2025 23:28 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 04:28:43 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-19T10:06:48ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 19 Nov 2025 05:06 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 19 Nov 2025 10:06:48 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-19T04:28:15ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 18 Nov 2025 23:28 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, 19 Nov 2025 04:28:15 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-17T13:42:20ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 17 Nov 2025 08:42 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 13:42:20 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-17T07:35:56ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 17 Nov 2025 02:35 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 07:35:56 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-15T06:12:26ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 15 Nov 2025 01:12 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 15 Nov 2025 06:12:26 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-15T00:45:55ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 14 Nov 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.Sat, 15 Nov 2025 00:45:55 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-12T08:15:58ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 12 Nov 2025 03:15 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 08:15:58 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-12T02:40:53ZManitowoc crossed Detroit River / Ambassador Bridge upbound on 11 Nov 2025 21:40 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 02:40:53 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:367341010:2025-11-11T14:47:21ZManitowoc crossed Detroit River / Ambassador Bridge downbound on 11 Nov 2025 09:47 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 11 Nov 2025 14:47:21 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-11T09:00:17ZManitowoc crossed Port Huron / Blue Water Bridge downbound on 11 Nov 2025 04:00 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, 11 Nov 2025 09:00:17 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:367341010:2025-11-07T17:47:46ZManitowoc crossed Port Huron / Blue Water Bridge upbound on 7 Nov 2025 12:47 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 07 Nov 2025 17:47:46 GMT