Recorded chokepoint passages for Frontenac, 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/frontenac/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:316001834:2025-12-25T23:30:49ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 25 Dec 2025 18:30 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 23:30:49 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316001834:2025-12-25T18:27:23ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 25 Dec 2025 13:27 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 25 Dec 2025 18:27:23 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316001834:2025-12-24T21:27:12ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 24 Dec 2025 16:27 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 21:27:12 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316001834:2025-12-22T08:59:56ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 22 Dec 2025 03:59 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 22 Dec 2025 08:59:56 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316001834:2025-12-21T10:36:39ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 21 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.Sun, 21 Dec 2025 10:36:39 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316001834:2025-12-21T05:15:47ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 21 Dec 2025 00:15 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, 21 Dec 2025 05:15:47 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316001834:2025-12-15T21:49:56ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 15 Dec 2025 16:49 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, 15 Dec 2025 21:49:56 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316001834:2025-12-15T16:42:46ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 15 Dec 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.Mon, 15 Dec 2025 16:42:46 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316001834:2025-12-14T19:41:58ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 14 Dec 2025 14:41 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, 14 Dec 2025 19:41:58 GMThttps://freighterlog.com/log/soo/2025-12/freighterlog:passage:316001834:2025-12-11T01:11:32ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 10 Dec 2025 20:11 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 11 Dec 2025 01:11:32 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316001834:2025-12-10T04:53:17ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 9 Dec 2025 23:53 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, 10 Dec 2025 04:53:17 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316001834:2025-12-09T20:33:55ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 9 Dec 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.Tue, 09 Dec 2025 20:33:55 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316001834:2025-12-08T23:51:15ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 8 Dec 2025 18:51 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 08 Dec 2025 23:51:15 GMThttps://freighterlog.com/log/welland/2025-12/freighterlog:passage:316001834:2025-12-07T13:01:12ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 7 Dec 2025 08:01 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 07 Dec 2025 13:01:12 GMThttps://freighterlog.com/log/detroit-river/2025-12/freighterlog:passage:316001834:2025-12-03T20:40:03ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 3 Dec 2025 15:40 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 20:40:03 GMThttps://freighterlog.com/log/port-huron/2025-12/freighterlog:passage:316001834:2025-12-03T15:10:13ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 3 Dec 2025 10:10 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, 03 Dec 2025 15:10:13 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316001834:2025-11-29T07:09:47ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 29 Nov 2025 02:09 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 29 Nov 2025 07:09:47 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316001834:2025-11-24T10:30:15ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 24 Nov 2025 05:30 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, 24 Nov 2025 10:30:15 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316001834:2025-11-23T12:32:54ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 23 Nov 2025 07:32 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 23 Nov 2025 12:32:54 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316001834:2025-11-23T07:19:06ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 23 Nov 2025 02:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 23 Nov 2025 07:19:06 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316001834:2025-11-22T04:47:45ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 21 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.Sat, 22 Nov 2025 04:47:45 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316001834:2025-11-20T12:05:16ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 20 Nov 2025 07:05 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 20 Nov 2025 12:05:16 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316001834:2025-11-18T13:43:04ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 18 Nov 2025 08:43 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 18 Nov 2025 13:43:04 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316001834:2025-11-15T15:01:12ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 15 Nov 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.Sat, 15 Nov 2025 15:01:12 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316001834:2025-11-08T21:33:48ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 8 Nov 2025 16:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 08 Nov 2025 21:33:48 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316001834:2025-11-08T16:37:38ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge downbound on 8 Nov 2025 11:37 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 08 Nov 2025 16:37:38 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316001834:2025-11-07T19:40:00ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 7 Nov 2025 14:40 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 07 Nov 2025 19:40:00 GMThttps://freighterlog.com/log/soo/2025-11/freighterlog:passage:316001834:2025-11-05T09:23:59ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 5 Nov 2025 04:23 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, 05 Nov 2025 09:23:59 GMThttps://freighterlog.com/log/port-huron/2025-11/freighterlog:passage:316001834:2025-11-04T12:37:36ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 4 Nov 2025 07:37 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 04 Nov 2025 12:37:36 GMThttps://freighterlog.com/log/detroit-river/2025-11/freighterlog:passage:316001834:2025-11-04T07:39:12ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 4 Nov 2025 02:39 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, 04 Nov 2025 07:39:12 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316001834:2025-11-03T03:59:46ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 2 Nov 2025 22:59 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Mon, 03 Nov 2025 03:59:46 GMThttps://freighterlog.com/log/welland/2025-11/freighterlog:passage:316001834:2025-11-01T16:01:03ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 1 Nov 2025 12:01 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 16:01:03 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316001834:2025-10-26T16:52:18ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge downbound on 26 Oct 2025 12:52 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 16:52:18 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316001834:2025-10-23T09:21:24ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) downbound on 23 Oct 2025 05:21 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 09:21:24 GMThttps://freighterlog.com/log/soo/2025-10/freighterlog:passage:316001834:2025-10-19T11:08:47ZFrontenac (Canada Steamship Lines) crossed Soo Locks (St. Marys River) upbound on 19 Oct 2025 07:08 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 19 Oct 2025 11:08:47 GMThttps://freighterlog.com/log/port-huron/2025-10/freighterlog:passage:316001834:2025-10-18T14:38:48ZFrontenac (Canada Steamship Lines) crossed Port Huron / Blue Water Bridge upbound on 18 Oct 2025 10:38 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, 18 Oct 2025 14:38:48 GMThttps://freighterlog.com/log/detroit-river/2025-10/freighterlog:passage:316001834:2025-10-18T06:17:13ZFrontenac (Canada Steamship Lines) crossed Detroit River / Ambassador Bridge upbound on 18 Oct 2025 02:17 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 18 Oct 2025 06:17:13 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316001834:2025-10-16T00:35:02ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) downbound on 15 Oct 2025 20:35 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 00:35:02 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316001834:2025-10-14T01:16:45ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 13 Oct 2025 21:16 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 14 Oct 2025 01:16:45 GMThttps://freighterlog.com/log/welland/2025-10/freighterlog:passage:316001834:2025-10-09T10:24:29ZFrontenac (Canada Steamship Lines) crossed Welland Canal (Thorold) upbound on 9 Oct 2025 06:24 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 10:24:29 GMT