Recorded chokepoint passages for American Mariner, 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/american-mariner/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:366938710:2025-12-31T18:53:30ZAmerican Mariner crossed Detroit River / Ambassador Bridge downbound on 31 Dec 2025 13:53 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 31 Dec 2025 18:53:30 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-31T12:55:01ZAmerican Mariner crossed Port Huron / Blue Water Bridge downbound on 31 Dec 2025 07:55 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 31 Dec 2025 12:55:01 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-29T09:19:30ZAmerican Mariner crossed Soo Locks (St. Marys River) downbound on 29 Dec 2025 04:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 29 Dec 2025 09:19:30 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-26T15:43:47ZAmerican Mariner crossed Soo Locks (St. Marys River) upbound on 26 Dec 2025 10:43 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Dec 2025 15:43:47 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-25T15:58:12ZAmerican Mariner crossed Port Huron / Blue Water Bridge upbound on 25 Dec 2025 10:58 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, 25 Dec 2025 15:58:12 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366938710:2025-12-25T09:59:54ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 25 Dec 2025 04:59 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 09:59:54 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366938710:2025-12-24T03:43:35ZAmerican Mariner crossed Detroit River / Ambassador Bridge downbound on 23 Dec 2025 22:43 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Dec 2025 03:43:35 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-23T22:18:32ZAmerican Mariner crossed Port Huron / Blue Water Bridge downbound on 23 Dec 2025 17:18 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 23 Dec 2025 22:18:32 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-23T00:28:22ZAmerican Mariner crossed Soo Locks (St. Marys River) downbound on 22 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.Tue, 23 Dec 2025 00:28:22 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-20T03:50:59ZAmerican Mariner crossed Soo Locks (St. Marys River) upbound on 19 Dec 2025 22:50 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, 20 Dec 2025 03:50:59 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-18T10:36:10ZAmerican Mariner crossed Port Huron / Blue Water Bridge upbound on 18 Dec 2025 05:36 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 18 Dec 2025 10:36:10 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366938710:2025-12-18T04:25:29ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 17 Dec 2025 23:25 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 18 Dec 2025 04:25:29 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366938710:2025-12-16T16:44:37ZAmerican Mariner crossed Detroit River / Ambassador Bridge downbound on 16 Dec 2025 11:44 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 16 Dec 2025 16:44:37 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-16T11:06:25ZAmerican Mariner crossed Port Huron / Blue Water Bridge downbound on 16 Dec 2025 06:06 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 11:06:25 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-15T10:03:14ZAmerican Mariner crossed Soo Locks (St. Marys River) downbound on 15 Dec 2025 05:03 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, 15 Dec 2025 10:03:14 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366938710:2025-12-11T20:36:25ZAmerican Mariner crossed Duluth Ship Canal outbound on 11 Dec 2025 14:36 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, 11 Dec 2025 20:36:25 GMThttps://freighterlog.com/log/duluth-canal/2025-12/freighterlog:passage:366938710:2025-12-10T21:19:10ZAmerican Mariner crossed Duluth Ship Canal inbound on 10 Dec 2025 15:19 CST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 10 Dec 2025 21:19:10 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-09T08:17:26ZAmerican Mariner crossed Soo Locks (St. Marys River) upbound on 9 Dec 2025 03:17 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, 09 Dec 2025 08:17:26 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366938710:2025-12-07T20:53:06ZAmerican Mariner crossed Straits of Mackinac eastbound on 7 Dec 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.Sun, 07 Dec 2025 20:53:06 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366938710:2025-12-05T19:34:02ZAmerican Mariner crossed Straits of Mackinac westbound on 5 Dec 2025 14:34 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 19:34:02 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-04T04:17:17ZAmerican Mariner crossed Port Huron / Blue Water Bridge upbound on 3 Dec 2025 23:17 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, 04 Dec 2025 04:17:17 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366938710:2025-12-03T22:27:28ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 3 Dec 2025 17:27 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 22:27:28 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366938710:2025-12-03T00:40:43ZAmerican Mariner crossed Detroit River / Ambassador Bridge downbound on 2 Dec 2025 19:40 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, 03 Dec 2025 00:40:43 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366938710:2025-12-02T19:05:09ZAmerican Mariner crossed Port Huron / Blue Water Bridge downbound on 2 Dec 2025 14:05 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, 02 Dec 2025 19:05:09 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:366938710:2025-12-01T19:38:36ZAmerican Mariner crossed Soo Locks (St. Marys River) downbound on 1 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.Mon, 01 Dec 2025 19:38:36 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366938710:2025-11-26T07:44:28ZAmerican Mariner crossed Soo Locks (St. Marys River) upbound on 26 Nov 2025 02:44 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 26 Nov 2025 07:44:28 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366938710:2025-11-25T09:59:51ZAmerican Mariner crossed Port Huron / Blue Water Bridge upbound on 25 Nov 2025 04:59 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 09:59:51 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366938710:2025-11-25T04:33:09ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 24 Nov 2025 23:33 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, 25 Nov 2025 04:33:09 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366938710:2025-11-24T03:10:05ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 23 Nov 2025 22:10 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, 24 Nov 2025 03:10:05 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366938710:2025-11-23T21:20:44ZAmerican Mariner crossed Port Huron / Blue Water Bridge downbound on 23 Nov 2025 16:20 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 21:20:44 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366938710:2025-11-20T20:33:35ZAmerican Mariner crossed Port Huron / Blue Water Bridge upbound on 20 Nov 2025 15:33 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, 20 Nov 2025 20:33:35 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366938710:2025-11-20T14:30:48ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 20 Nov 2025 09:30 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 14:30:48 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366938710:2025-11-19T14:49:13ZAmerican Mariner crossed Detroit River / Ambassador Bridge downbound on 19 Nov 2025 09:49 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 19 Nov 2025 14:49:13 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366938710:2025-11-19T08:46:03ZAmerican Mariner crossed Port Huron / Blue Water Bridge downbound on 19 Nov 2025 03:46 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 19 Nov 2025 08:46:03 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366938710:2025-11-18T11:05:53ZAmerican Mariner crossed Soo Locks (St. Marys River) downbound on 18 Nov 2025 06:05 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, 18 Nov 2025 11:05:53 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:366938710:2025-11-14T16:45:25ZAmerican Mariner crossed Soo Locks (St. Marys River) upbound on 14 Nov 2025 11:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 14 Nov 2025 16:45:25 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366938710:2025-11-14T08:26:25ZAmerican Mariner crossed Straits of Mackinac eastbound on 14 Nov 2025 03:26 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 14 Nov 2025 08:26:25 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366938710:2025-11-12T17:09:14ZAmerican Mariner crossed Straits of Mackinac westbound on 12 Nov 2025 12:09 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 17:09:14 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366938710:2025-11-07T15:44:25ZAmerican Mariner crossed Port Huron / Blue Water Bridge upbound on 7 Nov 2025 10:44 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 07 Nov 2025 15:44:25 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366938710:2025-11-07T09:45:17ZAmerican Mariner crossed Detroit River / Ambassador Bridge upbound on 7 Nov 2025 04:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 07 Nov 2025 09:45:17 GMT