Recorded chokepoint passages for Saginaw, 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/saginaw/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:316004950:2025-12-28T23:22:54ZSaginaw (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 28 Dec 2025 18:22 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 23:22:54 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-28T06:05:29ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 28 Dec 2025 01:05 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 28 Dec 2025 06:05:29 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-24T15:27:46ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 24 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.Wed, 24 Dec 2025 15:27:46 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316004950:2025-12-24T09:28:32ZSaginaw (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 24 Dec 2025 04:28 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, 24 Dec 2025 09:28:32 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316004950:2025-12-22T13:47:32ZSaginaw (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 22 Dec 2025 08:47 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 13:47:32 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-22T08:32:48ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 22 Dec 2025 03:32 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 08:32:48 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316004950:2025-12-20T09:28:29ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) downbound on 20 Dec 2025 04:28 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, 20 Dec 2025 09:28:29 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316004950:2025-12-16T01:15:17ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) upbound on 15 Dec 2025 20:15 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 16 Dec 2025 01:15:17 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-15T05:56:23ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 15 Dec 2025 00:56 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 05:56:23 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-14T04:27:43ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 13 Dec 2025 23:27 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 14 Dec 2025 04:27:43 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-12T21:18:50ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 12 Dec 2025 16:18 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 12 Dec 2025 21:18:50 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-12T13:22:41ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 12 Dec 2025 08:22 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 12 Dec 2025 13:22:41 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-09T21:28:53ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 9 Dec 2025 16:28 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, 09 Dec 2025 21:28:53 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316004950:2025-12-09T08:28:59ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 9 Dec 2025 03:28 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, 09 Dec 2025 08:28:59 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316004950:2025-12-04T01:03:47ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) downbound on 3 Dec 2025 20:03 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, 04 Dec 2025 01:03:47 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316004950:2025-11-30T15:17:28ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) upbound on 30 Nov 2025 10:17 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 30 Nov 2025 15:17:28 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316004950:2025-11-30T07:16:10ZSaginaw (Algoma Central) crossed Straits of Mackinac eastbound on 30 Nov 2025 02:16 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 30 Nov 2025 07:16:10 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316004950:2025-11-27T18:52:16ZSaginaw (Algoma Central) crossed Straits of Mackinac westbound on 27 Nov 2025 13:52 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 27 Nov 2025 18:52:16 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-26T03:24:02ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 25 Nov 2025 22:24 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, 26 Nov 2025 03:24:02 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-25T11:39:01ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 25 Nov 2025 06:39 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 25 Nov 2025 11:39:01 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316004950:2025-11-21T17:56:58ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) downbound on 21 Nov 2025 12:56 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 17:56:58 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316004950:2025-11-19T04:47:04ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) upbound on 18 Nov 2025 23:47 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 19 Nov 2025 04:47:04 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-18T10:08:53ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 18 Nov 2025 05:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 18 Nov 2025 10:08:53 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-17T16:44:07ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 17 Nov 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.Mon, 17 Nov 2025 16:44:07 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-15T02:02:29ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 14 Nov 2025 21:02 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, 15 Nov 2025 02:02:29 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-12T13:10:42ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 12 Nov 2025 08:10 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 13:10:42 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316004950:2025-11-10T17:16:46ZSaginaw (Algoma Central) crossed Straits of Mackinac eastbound on 10 Nov 2025 12:16 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 10 Nov 2025 17:16:46 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:316004950:2025-11-08T05:45:29ZSaginaw (Algoma Central) crossed Straits of Mackinac westbound on 8 Nov 2025 00:45 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, 08 Nov 2025 05:45:29 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-06T23:28:08ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 6 Nov 2025 18:28 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, 06 Nov 2025 23:28:08 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-06T09:44:20ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 6 Nov 2025 04:44 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 06 Nov 2025 09:44:20 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316004950:2025-11-04T17:40:25ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 4 Nov 2025 12:40 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 04 Nov 2025 17:40:25 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316004950:2025-11-04T12:20:07ZSaginaw (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 4 Nov 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.Tue, 04 Nov 2025 12:20:07 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316004950:2025-11-03T22:22:28ZSaginaw (Algoma Central) crossed Detroit River / Ambassador Bridge upbound on 3 Nov 2025 17:22 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 03 Nov 2025 22:22:28 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316004950:2025-11-02T09:15:53ZSaginaw (Algoma Central) crossed Welland Canal (Thorold) upbound on 2 Nov 2025 04:15 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 02 Nov 2025 09:15:53 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316004950:2025-10-26T12:11:35ZSaginaw (Algoma Central) crossed Welland Canal (Thorold) downbound on 26 Oct 2025 08:11 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, 26 Oct 2025 12:11:35 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316004950:2025-10-25T12:11:50ZSaginaw (Algoma Central) crossed Detroit River / Ambassador Bridge downbound on 25 Oct 2025 08:11 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 25 Oct 2025 12:11:50 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316004950:2025-10-25T06:39:14ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge downbound on 25 Oct 2025 02:39 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, 25 Oct 2025 06:39:14 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316004950:2025-10-24T12:27:02ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) downbound on 24 Oct 2025 08:27 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 24 Oct 2025 12:27:02 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316004950:2025-10-21T07:49:25ZSaginaw (Algoma Central) crossed Soo Locks (St. Marys River) upbound on 21 Oct 2025 03:49 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 21 Oct 2025 07:49:25 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316004950:2025-10-20T13:51:31ZSaginaw (Algoma Central) crossed Port Huron / Blue Water Bridge upbound on 20 Oct 2025 09:51 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 20 Oct 2025 13:51:31 GMT