Recorded chokepoint passages for G L Ostrander, 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/g-l-ostrander/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/port-huron/2025-12/freighterlog:passage:366937490:2025-12-31T05:06:49ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge upbound on 31 Dec 2025 00:06 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, 31 Dec 2025 05:06:49 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366937490:2025-12-30T21:56:41ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 30 Dec 2025 16:56 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 30 Dec 2025 21:56:41 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:366937490:2025-12-26T10:21:23ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge downbound on 26 Dec 2025 05:21 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Dec 2025 10:21:23 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:366937490:2025-12-26T04:19:35ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge downbound on 25 Dec 2025 23:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 26 Dec 2025 04:19:35 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: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:366937490:2025-12-17T15:07:08ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 17 Dec 2025 10:07 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 17 Dec 2025 15:07:08 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-14T09:24:20ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 14 Dec 2025 04:24 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, 14 Dec 2025 09:24:20 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-12T02:59:06ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 11 Dec 2025 21:59 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 12 Dec 2025 02:59:06 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-06T07:30:49ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 6 Dec 2025 02:30 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 06 Dec 2025 07:30:49 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-04T13:51:25ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 4 Dec 2025 08:51 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 04 Dec 2025 13:51:25 GMThttps://freighterlog.com/log/mackinac/2025-12/freighterlog:passage:366937490:2025-12-01T14:30:47ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 1 Dec 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.Mon, 01 Dec 2025 14:30:47 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366937490:2025-11-29T14:01:46ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 29 Nov 2025 09:01 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 29 Nov 2025 14:01:46 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366937490:2025-11-22T16:42:41ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 22 Nov 2025 11:42 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 22 Nov 2025 16:42:41 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366937490:2025-11-21T06:48:41ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge upbound on 21 Nov 2025 01:48 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, 21 Nov 2025 06:48:41 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366937490:2025-11-21T01:21:15ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 20 Nov 2025 20:21 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 21 Nov 2025 01:21:15 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366937490:2025-11-19T04:54:40ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge downbound on 18 Nov 2025 23:54 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 19 Nov 2025 04:54:40 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366937490:2025-11-18T23:35:45ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge downbound on 18 Nov 2025 18:35 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 18 Nov 2025 23:35:45 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366937490:2025-11-14T18:47:34ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge upbound on 14 Nov 2025 13:47 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, 14 Nov 2025 18:47:34 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366937490:2025-11-14T12:38:48ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 14 Nov 2025 07:38 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, 14 Nov 2025 12:38:48 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:366937490:2025-11-12T09:33:50ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 12 Nov 2025 04:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 09:33:50 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:366937490:2025-11-12T01:33:44ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge downbound on 11 Nov 2025 20:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 12 Nov 2025 01:33:44 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366937490:2025-11-10T04:11:51ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 9 Nov 2025 23:11 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 10 Nov 2025 04:11:51 GMThttps://freighterlog.com/log/mackinac/2025-11/freighterlog:passage:366937490:2025-11-03T19:54:28ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 3 Nov 2025 14:54 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 03 Nov 2025 19:54:28 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:366937490:2025-10-31T23:07:12ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge upbound on 31 Oct 2025 19:07 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, 31 Oct 2025 23:07:12 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:366937490:2025-10-31T16:18:25ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 31 Oct 2025 12:18 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, 31 Oct 2025 16:18:25 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:366937490:2025-10-29T11:45:40ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 29 Oct 2025 07:45 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 29 Oct 2025 11:45:40 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:366937490:2025-10-29T05:31:15ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge downbound on 29 Oct 2025 01:31 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 29 Oct 2025 05:31:15 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-26T15:09:36ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 26 Oct 2025 11:09 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 26 Oct 2025 15:09:36 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-22T04:56:18ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 22 Oct 2025 00:56 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 22 Oct 2025 04:56:18 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-19T03:31:24ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 18 Oct 2025 23:31 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, 19 Oct 2025 03:31:24 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-14T13:05:20ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 14 Oct 2025 09:05 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, 14 Oct 2025 13:05:20 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-12T02:25:49ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 11 Oct 2025 22:25 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, 12 Oct 2025 02:25:49 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-09T13:12:23ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 9 Oct 2025 09:12 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 09 Oct 2025 13:12:23 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-08T13:16:04ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac eastbound on 8 Oct 2025 09:16 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 08 Oct 2025 13:16:04 GMThttps://freighterlog.com/log/mackinac/2025-10/freighterlog:passage:366937490:2025-10-04T01:41:27ZG L Ostrander (Andrie LLC) crossed Straits of Mackinac westbound on 3 Oct 2025 21:41 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, 04 Oct 2025 01:41:27 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:366937490:2025-10-02T06:56:49ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge upbound on 2 Oct 2025 02:56 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 02 Oct 2025 06:56:49 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:366937490:2025-10-02T00:54:00ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge upbound on 1 Oct 2025 20:54 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 02 Oct 2025 00:54:00 GMThttps://freighterlog.com/log/detroit-river/2025-09/freighterlog:passage:366937490:2025-09-30T22:20:26ZG L Ostrander (Andrie LLC) crossed Detroit River / Ambassador Bridge downbound on 30 Sep 2025 18:20 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, 30 Sep 2025 22:20:26 GMThttps://freighterlog.com/log/port-huron/2025-09/freighterlog:passage:366937490:2025-09-30T17:08:01ZG L Ostrander (Andrie LLC) crossed Port Huron / Blue Water Bridge downbound on 30 Sep 2025 13:08 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, 30 Sep 2025 17:08:01 GMT