Recorded crossings of the Straits of Mackinac chokepoint line, 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/locks/mackinac/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:366904940:2025-12-31T13:49:09ZPaul R Tregurtha (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 31 Dec 2025 08:49 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, 31 Dec 2025 13:49:09 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367084930:2025-12-31T11:13:55ZSamuel de Champlain (Andrie LLC) crossed Straits of Mackinac westbound on 31 Dec 2025 06:13 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 31 Dec 2025 11:13:55 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367409260:2025-12-31T07:24:59ZDorothy Ann (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 31 Dec 2025 02:24 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 31 Dec 2025 07:24:59 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366938780:2025-12-30T07:54:18ZJohn J Boland crossed Straits of Mackinac westbound on 30 Dec 2025 02:54 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, 30 Dec 2025 07:54:18 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:316036228:2025-12-30T07:26:58ZAlgoma Buffalo (Algoma Central) crossed Straits of Mackinac westbound on 30 Dec 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.Tue, 30 Dec 2025 07:26:58 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367082220:2025-12-29T14:17:31ZSTR Wilfred Sykes (Central Marine Logistics) crossed Straits of Mackinac westbound on 29 Dec 2025 09:17 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 29 Dec 2025 14:17:31 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367050550:2025-12-29T00:49:34ZStewart J Cort (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 28 Dec 2025 19:49 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 29 Dec 2025 00:49:34 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:316023339:2025-12-28T20:45:15ZThunder Bay (Canada Steamship Lines) crossed Straits of Mackinac westbound on 28 Dec 2025 15:45 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 20:45:15 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971370:2025-12-28T18:11:43ZEdwin H Gott (Great Lakes Fleet) crossed Straits of Mackinac westbound on 28 Dec 2025 13:11 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 18:11:43 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971330:2025-12-28T17:22:12ZEdgar B Speer (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 28 Dec 2025 12:22 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 17:22:12 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:368183000:2025-12-28T14:54:48ZGreat Republic (Great Lakes Fleet) crossed Straits of Mackinac westbound on 28 Dec 2025 09:54 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 14:54:48 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367050160:2025-12-28T12:20:04ZBurns Harbor (American Steamship Company) crossed Straits of Mackinac westbound on 28 Dec 2025 07:20 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, 28 Dec 2025 12:20:04 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366938730:2025-12-28T06:14:56ZIndiana Harbor (American Steamship Company) crossed Straits of Mackinac westbound on 28 Dec 2025 01:14 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 06:14:56 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/mackinac/2025-12/freighterlog:passage:366938760:2025-12-27T17:29:15ZSam Laud crossed Straits of Mackinac westbound on 27 Dec 2025 12:29 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 17:29:15 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366904950:2025-12-27T12:52:14ZLee A Tregurtha (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 27 Dec 2025 07:52 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 27 Dec 2025 12:52:14 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367340990:2025-12-27T11:28:46ZCalumet crossed Straits of Mackinac eastbound on 27 Dec 2025 06:28 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 27 Dec 2025 11:28:46 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367120990:2025-12-26T23:44:26ZAmerican Integrity (American Steamship Company) crossed Straits of Mackinac eastbound on 26 Dec 2025 18:44 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, 26 Dec 2025 23:44:26 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367082230:2025-12-26T14:26:45ZJoseph L Block (Central Marine Logistics) crossed Straits of Mackinac eastbound on 26 Dec 2025 09:26 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, 26 Dec 2025 14:26:45 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971330:2025-12-26T03:02:25ZEdgar B Speer (Great Lakes Fleet) crossed Straits of Mackinac westbound on 25 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.Fri, 26 Dec 2025 03:02:25 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366983440:2025-12-26T01:28:18ZJoyce L Vanenkevort (VanEnkevort Tug & Barge) crossed Straits of Mackinac eastbound on 25 Dec 2025 20:28 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 01:28:18 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/mackinac/2025-12/freighterlog:passage:366904940:2025-12-25T17:34:13ZPaul R Tregurtha (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 25 Dec 2025 12:34 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 25 Dec 2025 17:34:13 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367050550:2025-12-25T08:30:18ZStewart J Cort (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 25 Dec 2025 03:30 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, 25 Dec 2025 08:30:18 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-24T18:51:46ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 24 Dec 2025 13:51 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Dec 2025 18:51:46 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:366904950:2025-12-24T16:08:09ZLee A Tregurtha (The Interlake Steamship Company) crossed Straits of Mackinac eastbound on 24 Dec 2025 11:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 24 Dec 2025 16:08:09 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367120990:2025-12-24T00:51:35ZAmerican Integrity (American Steamship Company) crossed Straits of Mackinac westbound on 23 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.Wed, 24 Dec 2025 00:51:35 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:367050160:2025-12-23T22:49:55ZBurns Harbor (American Steamship Company) crossed Straits of Mackinac eastbound on 23 Dec 2025 17:49 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 23 Dec 2025 22:49:55 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/mackinac/2025-12/freighterlog:passage:367121010:2025-12-23T12:13:20ZAmerican Century (American Steamship Company) crossed Straits of Mackinac eastbound on 23 Dec 2025 07:13 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, 23 Dec 2025 12:13:20 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367082230:2025-12-22T19:19:22ZJoseph L Block (Central Marine Logistics) crossed Straits of Mackinac westbound on 22 Dec 2025 14:19 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, 22 Dec 2025 19:19:22 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366983440:2025-12-22T18:07:41ZJoyce L Vanenkevort (VanEnkevort Tug & Barge) crossed Straits of Mackinac westbound on 22 Dec 2025 13:07 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 18:07:41 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366904940:2025-12-22T13:36:27ZPaul R Tregurtha (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 22 Dec 2025 08:36 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 13:36:27 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:366971330:2025-12-22T11:53:48ZEdgar B Speer (Great Lakes Fleet) crossed Straits of Mackinac eastbound on 22 Dec 2025 06:53 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 11:53:48 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366906610:2025-12-22T07:03:56ZWalter J McCarthy Jr (American Steamship Company) crossed Straits of Mackinac eastbound on 22 Dec 2025 02:03 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, 22 Dec 2025 07:03:56 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/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/mackinac/2025-12/freighterlog:passage:366904950:2025-12-21T13:09:23ZLee A Tregurtha (The Interlake Steamship Company) crossed Straits of Mackinac westbound on 21 Dec 2025 08:09 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, 21 Dec 2025 13:09:23 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367340990:2025-12-21T08:51:15ZCalumet crossed Straits of Mackinac westbound on 21 Dec 2025 03:51 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 21 Dec 2025 08:51:15 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/mackinac/2025-12/freighterlog:passage:367082220:2025-12-20T21:02:07ZSTR Wilfred Sykes (Central Marine Logistics) crossed Straits of Mackinac eastbound on 20 Dec 2025 16:02 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, 20 Dec 2025 21:02:07 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-20T12:12:12ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 20 Dec 2025 07:12 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, 20 Dec 2025 12:12:12 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:338888000:2025-12-20T06:16:22ZClyde S van Enkevort (VanEnkevort Tug & Barge) crossed Straits of Mackinac eastbound on 20 Dec 2025 01:16 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 20 Dec 2025 06:16:22 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367050160:2025-12-19T20:49:46ZBurns Harbor (American Steamship Company) crossed Straits of Mackinac westbound on 19 Dec 2025 15:49 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 19 Dec 2025 20:49:46 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:367121010:2025-12-19T17:27:57ZAmerican Century (American Steamship Company) crossed Straits of Mackinac westbound on 19 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, 19 Dec 2025 17:27:57 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366971330:2025-12-19T14:32:14ZEdgar B Speer (Great Lakes Fleet) crossed Straits of Mackinac westbound on 19 Dec 2025 09:32 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 19 Dec 2025 14:32:14 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366906610:2025-12-18T15:01:50ZWalter J McCarthy Jr (American Steamship Company) crossed Straits of Mackinac westbound on 18 Dec 2025 10:01 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 15:01:50 GMT