Recorded chokepoint passages for CSL St-Laurent, 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/csl-st-laurent/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/welland/2025-12/freighterlog:passage:316026694:2025-12-21T22:08:04ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 21 Dec 2025 17:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 21 Dec 2025 22:08:04 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316026694:2025-12-20T22:35:28ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 20 Dec 2025 17:35 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 20 Dec 2025 22:35:28 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316026694:2025-12-20T16:48:13ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 20 Dec 2025 11:48 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 20 Dec 2025 16:48:13 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316026694:2025-12-19T05:02:33ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 19 Dec 2025 00:02 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, 19 Dec 2025 05:02:33 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316026694:2025-12-13T22:06:39ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 13 Dec 2025 17:06 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 13 Dec 2025 22:06:39 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316026694:2025-12-12T18:57:59ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 12 Dec 2025 13:57 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 18:57:59 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316026694:2025-12-11T06:36:10ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 11 Dec 2025 01:36 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, 11 Dec 2025 06:36:10 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316026694:2025-12-03T19:11:00ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 3 Dec 2025 14:11 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 03 Dec 2025 19:11:00 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316026694:2025-12-02T21:34:29ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 2 Dec 2025 16:34 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 02 Dec 2025 21:34:29 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316026694:2025-12-02T16:09:49ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 2 Dec 2025 11:09 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 02 Dec 2025 16:09:49 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316026694:2025-12-01T17:29:40ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 1 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.Mon, 01 Dec 2025 17:29:40 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316026694:2025-11-28T09:58:33ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 28 Nov 2025 04:58 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 28 Nov 2025 09:58:33 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316026694:2025-11-25T17:35:58ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 25 Nov 2025 12:35 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, 25 Nov 2025 17:35:58 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316026694:2025-11-25T12:19:57ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 25 Nov 2025 07:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 25 Nov 2025 12:19:57 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316026694:2025-11-24T14:09:11ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 24 Nov 2025 09:09 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 24 Nov 2025 14:09:11 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316026694:2025-11-17T05:52:07ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 17 Nov 2025 00:52 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 17 Nov 2025 05:52:07 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316026694:2025-11-16T03:41:10ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 15 Nov 2025 22:41 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, 16 Nov 2025 03:41:10 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316026694:2025-11-15T22:41:43ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 15 Nov 2025 17:41 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 22:41:43 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316026694:2025-11-15T01:02:25ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 14 Nov 2025 20:02 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 01:02:25 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316026694:2025-11-11T15:48:40ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 11 Nov 2025 10:48 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 11 Nov 2025 15:48:40 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316026694:2025-11-10T17:52:05ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 10 Nov 2025 12:52 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 10 Nov 2025 17:52:05 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316026694:2025-11-10T08:24:53ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 10 Nov 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.Mon, 10 Nov 2025 08:24:53 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316026694:2025-11-09T11:43:41ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 9 Nov 2025 06:43 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 09 Nov 2025 11:43:41 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316026694:2025-11-01T16:38:16ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 1 Nov 2025 12:38 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, 01 Nov 2025 16:38:16 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316026694:2025-10-31T17:55:11ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 31 Oct 2025 13:55 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 17:55:11 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316026694:2025-10-31T12:49:36ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 31 Oct 2025 08:49 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 31 Oct 2025 12:49:36 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316026694:2025-10-30T14:22:11ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 30 Oct 2025 10:22 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, 30 Oct 2025 14:22:11 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316026694:2025-10-26T00:52:47ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 25 Oct 2025 20:52 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 00:52:47 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316026694:2025-10-25T04:11:26ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 25 Oct 2025 00:11 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 04:11:26 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316026694:2025-10-24T22:17:19ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 24 Oct 2025 18:17 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 22:17:19 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316026694:2025-10-23T22:54:13ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 23 Oct 2025 18:54 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, 23 Oct 2025 22:54:13 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316026694:2025-10-16T21:36:43ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 16 Oct 2025 17:36 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, 16 Oct 2025 21:36:43 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316026694:2025-10-15T23:15:58ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 15 Oct 2025 19:15 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, 15 Oct 2025 23:15:58 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316026694:2025-10-15T17:48:28ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 15 Oct 2025 13:48 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, 15 Oct 2025 17:48:28 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316026694:2025-10-14T20:30:09ZCSL St-Laurent (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 14 Oct 2025 16:30 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 20:30:09 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316026694:2025-10-10T21:50:33ZCSL St-Laurent (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 10 Oct 2025 17:50 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, 10 Oct 2025 21:50:33 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316026694:2025-10-10T15:03:52ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 10 Oct 2025 11:03 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, 10 Oct 2025 15:03:52 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316026694:2025-10-09T13:38:36ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 9 Oct 2025 09:38 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 13:38:36 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316026694:2025-10-04T06:39:56ZCSL St-Laurent (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 4 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, 04 Oct 2025 06:39:56 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316026694:2025-10-03T06:53:51ZCSL St-Laurent (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 3 Oct 2025 02:53 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, 03 Oct 2025 06:53:51 GMT