Recorded chokepoint passages for Polsteam Koprowo, 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/polsteam-koprowo/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/2025-07/freighterlog:passage:636023734:2025-07-27T16:31:40ZPolsteam Koprowo crossed Welland Canal (Thorold) downbound on 27 Jul 2025 12:31 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, 27 Jul 2025 16:31:40 GMThttps://freighterlog.com/log/detroit-river/2025-07/freighterlog:passage:636023734:2025-07-26T15:45:44ZPolsteam Koprowo crossed Detroit River / Ambassador Bridge downbound on 26 Jul 2025 11:45 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 26 Jul 2025 15:45:44 GMThttps://freighterlog.com/log/port-huron/2025-07/freighterlog:passage:636023734:2025-07-26T10:35:58ZPolsteam Koprowo crossed Port Huron / Blue Water Bridge downbound on 26 Jul 2025 06:35 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 26 Jul 2025 10:35:58 GMThttps://freighterlog.com/log/soo/2025-07/freighterlog:passage:636023734:2025-07-25T13:46:59ZPolsteam Koprowo crossed Soo Locks (St. Marys River) downbound on 25 Jul 2025 09:46 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, 25 Jul 2025 13:46:59 GMThttps://freighterlog.com/log/soo/2025-07/freighterlog:passage:636023734:2025-07-16T23:47:22ZPolsteam Koprowo crossed Soo Locks (St. Marys River) upbound on 16 Jul 2025 19:47 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, 16 Jul 2025 23:47:22 GMThttps://freighterlog.com/log/port-huron/2025-07/freighterlog:passage:636023734:2025-07-16T03:07:16ZPolsteam Koprowo crossed Port Huron / Blue Water Bridge upbound on 15 Jul 2025 23:07 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 16 Jul 2025 03:07:16 GMThttps://freighterlog.com/log/detroit-river/2025-07/freighterlog:passage:636023734:2025-07-15T21:43:19ZPolsteam Koprowo crossed Detroit River / Ambassador Bridge upbound on 15 Jul 2025 17:43 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, 15 Jul 2025 21:43:19 GMThttps://freighterlog.com/log/welland/2025-07/freighterlog:passage:636023734:2025-07-15T01:15:16ZPolsteam Koprowo crossed Welland Canal (Thorold) upbound on 14 Jul 2025 21:15 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Tue, 15 Jul 2025 01:15:16 GMThttps://freighterlog.com/log/welland/2024-12/freighterlog:passage:636023734:2024-12-18T07:22:37ZPolsteam Koprowo crossed Welland Canal (Thorold) downbound on 18 Dec 2024 02:22 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Wed, 18 Dec 2024 07:22:37 GMThttps://freighterlog.com/log/detroit-river/2024-12/freighterlog:passage:636023734:2024-12-14T23:19:30ZPolsteam Koprowo crossed Detroit River / Ambassador Bridge downbound on 14 Dec 2024 18:19 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 14 Dec 2024 23:19:30 GMThttps://freighterlog.com/log/port-huron/2024-12/freighterlog:passage:636023734:2024-12-14T17:55:08ZPolsteam Koprowo crossed Port Huron / Blue Water Bridge downbound on 14 Dec 2024 12:55 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, 14 Dec 2024 17:55:08 GMThttps://freighterlog.com/log/soo/2024-12/freighterlog:passage:636023734:2024-12-13T16:18:59ZPolsteam Koprowo crossed Soo Locks (St. Marys River) downbound on 13 Dec 2024 11:18 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, 13 Dec 2024 16:18:59 GMThttps://freighterlog.com/log/soo/2024-12/freighterlog:passage:636023734:2024-12-06T22:13:50ZPolsteam Koprowo crossed Soo Locks (St. Marys River) upbound on 6 Dec 2024 17:13 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 06 Dec 2024 22:13:50 GMThttps://freighterlog.com/log/mackinac/2024-12/freighterlog:passage:636023734:2024-12-05T00:33:37ZPolsteam Koprowo crossed Straits of Mackinac eastbound on 4 Dec 2024 19:33 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Thu, 05 Dec 2024 00:33:37 GMThttps://freighterlog.com/log/mackinac/2024-11/freighterlog:passage:636023734:2024-11-23T04:10:55ZPolsteam Koprowo crossed Straits of Mackinac westbound on 22 Nov 2024 23:10 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sat, 23 Nov 2024 04:10:55 GMThttps://freighterlog.com/log/port-huron/2024-11/freighterlog:passage:636023734:2024-11-22T07:54:45ZPolsteam Koprowo crossed Port Huron / Blue Water Bridge upbound on 22 Nov 2024 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.Fri, 22 Nov 2024 07:54:45 GMThttps://freighterlog.com/log/detroit-river/2024-11/freighterlog:passage:636023734:2024-11-22T02:08:58ZPolsteam Koprowo crossed Detroit River / Ambassador Bridge upbound on 21 Nov 2024 21:08 EST. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 22 Nov 2024 02:08:58 GMThttps://freighterlog.com/log/welland/2024-11/freighterlog:passage:636023734:2024-11-21T04:50:57ZPolsteam Koprowo crossed Welland Canal (Thorold) upbound on 20 Nov 2024 23:50 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, 21 Nov 2024 04:50:57 GMThttps://freighterlog.com/log/welland/2024-08/freighterlog:passage:636023734:2024-08-05T08:00:50ZPolsteam Koprowo crossed Welland Canal (Thorold) downbound on 5 Aug 2024 04:00 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, 05 Aug 2024 08:00:50 GMThttps://freighterlog.com/log/detroit-river/2024-08/freighterlog:passage:636023734:2024-08-04T11:44:38ZPolsteam Koprowo crossed Detroit River / Ambassador Bridge downbound on 4 Aug 2024 07:44 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, 04 Aug 2024 11:44:38 GMThttps://freighterlog.com/log/port-huron/2024-08/freighterlog:passage:636023734:2024-08-04T06:07:28ZPolsteam Koprowo crossed Port Huron / Blue Water Bridge downbound on 4 Aug 2024 02:07 EDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Sun, 04 Aug 2024 06:07:28 GMThttps://freighterlog.com/log/soo/2024-08/freighterlog:passage:636023734:2024-08-03T09:40:55ZPolsteam Koprowo crossed Soo Locks (St. Marys River) downbound on 3 Aug 2024 05:40 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, 03 Aug 2024 09:40:55 GMThttps://freighterlog.com/log/duluth-canal/2024-08/freighterlog:passage:636023734:2024-08-02T01:30:21ZPolsteam Koprowo crossed Duluth Ship Canal outbound on 1 Aug 2024 20:30 CDT. Interpolated from AIS track samples and good to about ±15 minutes; a crossing of the FreighterLog chokepoint line, not an official lock record.Fri, 02 Aug 2024 01:30:21 GMThttps://freighterlog.com/log/duluth-canal/2024-07/freighterlog:passage:636023734:2024-07-29T11:55:43ZPolsteam Koprowo crossed Duluth Ship Canal inbound on 29 Jul 2024 06:55 CDT. 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 Jul 2024 11:55:43 GMThttps://freighterlog.com/log/soo/2024-07/freighterlog:passage:636023734:2024-07-06T04:41:31ZPolsteam Koprowo crossed Soo Locks (St. Marys River) upbound on 6 Jul 2024 00:41 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, 06 Jul 2024 04:41:31 GMThttps://freighterlog.com/log/port-huron/2024-07/freighterlog:passage:636023734:2024-07-05T06:47:11ZPolsteam Koprowo crossed Port Huron / Blue Water Bridge upbound on 5 Jul 2024 02:47 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, 05 Jul 2024 06:47:11 GMThttps://freighterlog.com/log/detroit-river/2024-07/freighterlog:passage:636023734:2024-07-05T01:10:27ZPolsteam Koprowo crossed Detroit River / Ambassador Bridge upbound on 4 Jul 2024 21:10 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, 05 Jul 2024 01:10:27 GMThttps://freighterlog.com/log/welland/2024-07/freighterlog:passage:636023734:2024-07-01T07:46:01ZPolsteam Koprowo crossed Welland Canal (Thorold) upbound on 1 Jul 2024 03:46 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, 01 Jul 2024 07:46:01 GMT