FreighterLog The record of Great Lakes shipping

Archive: January 2024 to December 2025, 28,207 passages. Seaway transits checked hourly. Last checked 2026-09-23 18:00 UTC — 14:00 EDT. NOAA publishes in quarterly batches, and the archive currently runs nine months behind.

Archive to December 2025 · Seaway checked 2026-09-23 18:00 UTC — 14:00 EDT

Fleet-matched vessel · Canada flag

Algoma Compass

Algoma Central · Self-unloader · 207 m. Range: Lakes only. 256 recorded passages across 7 chokepoints.

Last recorded passage

downbound at Welland Canal (Thorold)

20 Dec 2025, 20:57 EST — ±15 min · see the December 2025 log

This is an archive, not a tracker. The passage record runs January 2024 to December 2025 and ends at 31 Dec 2025. The public AIS archive arrives in quarterly batches and currently runs nine months behind. Nothing on this page tells you where Algoma Compass is today. Her last recorded passage was 11 days before the archive ends, and that gap is about the record, not necessarily about the ship.

FreighterLog is the record, not the map. For where Algoma Compass is right now, see BoatNerd's live AIS map, which runs on their own receivers on the lakes, or VesselFinder.

Follow by RSS. Every crossing Algoma Compass makes goes into a feed of her own, added when the next batch of the public AIS archive is processed. It is a file on this domain: no account, no email address, and nothing that reports back. Algoma Compass feed · all chokepoints

Specification

Dimensions and identifiers as broadcast over AIS; AIS-reported figures are self-declared by the vessel and are not a registry of record.
Name (AIS) ALGOMA COMPASS
MMSI 316036229
IMO IMO7326245
Call sign VDBY
Length overall 207 m (679 ft)
Beam 24 m (79 ft)
AIS vessel type Cargo
Hull type Self-unloader
Operator Algoma Central
Flag Canada

Passage record

  • 256 Passages January 2024 – December 2025
  • 7 Chokepoints of 7 monitored
  • 27 Apr 2024 First in archive UTC date
  • 21 Dec 2025 Last in archive UTC date

Where she was recorded

Season passage log

Local time at each chokepoint · grouped by month (UTC buckets)

Times are interpolated from AIS track samples, good to about fifteen minutes, and shown in each chokepoint's local time. A passage is a track crossing our gate line, not an official lock record.

2025 season

December 2025 18 passages
Date Local time Chokepoint Direction
20 Dec 2025 20:57 EST Welland Canal (Thorold) downbound
19 Dec 2025 19:54 EST Detroit River / Ambassador Bridge downbound
19 Dec 2025 06:08 EST Port Huron / Blue Water Bridge downbound
17 Dec 2025 14:53 EST Port Huron / Blue Water Bridge upbound
17 Dec 2025 09:01 EST Detroit River / Ambassador Bridge upbound
16 Dec 2025 06:55 EST Welland Canal (Thorold) upbound
14 Dec 2025 17:31 EST Welland Canal (Thorold) downbound
13 Dec 2025 17:34 EST Detroit River / Ambassador Bridge downbound
13 Dec 2025 08:41 EST Port Huron / Blue Water Bridge downbound
11 Dec 2025 22:30 EST Detroit River / Ambassador Bridge upbound
10 Dec 2025 20:40 EST Welland Canal (Thorold) upbound
9 Dec 2025 07:31 EST Welland Canal (Thorold) downbound
8 Dec 2025 05:54 EST Detroit River / Ambassador Bridge downbound
8 Dec 2025 00:28 EST Port Huron / Blue Water Bridge downbound
5 Dec 2025 20:43 EST Port Huron / Blue Water Bridge upbound
5 Dec 2025 15:06 EST Detroit River / Ambassador Bridge upbound
2 Dec 2025 15:07 EST Detroit River / Ambassador Bridge downbound
2 Dec 2025 07:44 EST Port Huron / Blue Water Bridge downbound
November 2025 15 passages
Date Local time Chokepoint Direction
25 Nov 2025 12:53 EST Port Huron / Blue Water Bridge upbound
25 Nov 2025 01:13 EST Detroit River / Ambassador Bridge upbound
24 Nov 2025 09:17 EST Detroit River / Ambassador Bridge downbound
24 Nov 2025 00:56 EST Port Huron / Blue Water Bridge downbound
20 Nov 2025 10:45 EST Straits of Mackinac eastbound
18 Nov 2025 09:09 EST Straits of Mackinac westbound
16 Nov 2025 11:00 EST Port Huron / Blue Water Bridge upbound
16 Nov 2025 03:48 EST Detroit River / Ambassador Bridge upbound
15 Nov 2025 21:24 EST Detroit River / Ambassador Bridge downbound
15 Nov 2025 15:30 EST Port Huron / Blue Water Bridge downbound
8 Nov 2025 09:57 EST Port Huron / Blue Water Bridge upbound
8 Nov 2025 01:01 EST Port Huron / Blue Water Bridge downbound
6 Nov 2025 10:46 EST Straits of Mackinac eastbound
3 Nov 2025 03:10 EST Straits of Mackinac westbound
31 Oct 2025 22:32 EDT Port Huron / Blue Water Bridge upbound
October 2025 18 passages
Date Local time Chokepoint Direction
31 Oct 2025 14:43 EDT Detroit River / Ambassador Bridge upbound
31 Oct 2025 02:17 EDT Detroit River / Ambassador Bridge downbound
30 Oct 2025 20:08 EDT Port Huron / Blue Water Bridge downbound
29 Oct 2025 08:12 EDT Port Huron / Blue Water Bridge upbound
29 Oct 2025 02:27 EDT Detroit River / Ambassador Bridge upbound
28 Oct 2025 02:25 EDT Welland Canal (Thorold) upbound
26 Oct 2025 15:10 EDT Welland Canal (Thorold) downbound
25 Oct 2025 14:44 EDT Detroit River / Ambassador Bridge downbound
25 Oct 2025 09:06 EDT Port Huron / Blue Water Bridge downbound
24 Oct 2025 06:17 EDT Port Huron / Blue Water Bridge upbound
24 Oct 2025 00:32 EDT Detroit River / Ambassador Bridge upbound
17 Oct 2025 21:16 EDT Detroit River / Ambassador Bridge downbound
17 Oct 2025 15:31 EDT Port Huron / Blue Water Bridge downbound
16 Oct 2025 15:32 EDT Port Huron / Blue Water Bridge upbound
16 Oct 2025 07:35 EDT Detroit River / Ambassador Bridge upbound
12 Oct 2025 22:44 EDT Welland Canal (Thorold) downbound
11 Oct 2025 22:30 EDT Detroit River / Ambassador Bridge downbound
11 Oct 2025 16:24 EDT Port Huron / Blue Water Bridge downbound
September 2025 19 passages
Date Local time Chokepoint Direction
30 Sep 2025 03:01 EDT Soo Locks (St. Marys River) downbound
26 Sep 2025 14:19 EDT Soo Locks (St. Marys River) upbound
25 Sep 2025 15:12 EDT Port Huron / Blue Water Bridge upbound
25 Sep 2025 09:20 EDT Detroit River / Ambassador Bridge upbound
24 Sep 2025 08:33 EDT Welland Canal (Thorold) upbound
21 Sep 2025 09:30 EDT Welland Canal (Thorold) downbound
20 Sep 2025 08:44 EDT Detroit River / Ambassador Bridge downbound
20 Sep 2025 02:58 EDT Port Huron / Blue Water Bridge downbound
18 Sep 2025 23:39 EDT Port Huron / Blue Water Bridge upbound
18 Sep 2025 17:41 EDT Detroit River / Ambassador Bridge upbound
17 Sep 2025 16:38 EDT Detroit River / Ambassador Bridge upbound
17 Sep 2025 11:29 EDT Port Huron / Blue Water Bridge downbound
15 Sep 2025 20:48 EDT Soo Locks (St. Marys River) downbound
13 Sep 2025 03:44 CDT Duluth Ship Canal outbound
7 Sep 2025 12:53 CDT Duluth Ship Canal inbound
6 Sep 2025 01:16 EDT Soo Locks (St. Marys River) upbound
4 Sep 2025 10:04 EDT Port Huron / Blue Water Bridge upbound
4 Sep 2025 04:02 EDT Detroit River / Ambassador Bridge upbound
3 Sep 2025 03:59 EDT Welland Canal (Thorold) upbound
August 2025 19 passages
Date Local time Chokepoint Direction
31 Aug 2025 07:16 EDT Detroit River / Ambassador Bridge downbound
31 Aug 2025 02:22 EDT Port Huron / Blue Water Bridge downbound
29 Aug 2025 10:40 EDT Soo Locks (St. Marys River) downbound
29 Aug 2025 01:59 EDT Soo Locks (St. Marys River) upbound
28 Aug 2025 05:38 EDT Straits of Mackinac eastbound
26 Aug 2025 22:21 EDT Straits of Mackinac westbound
25 Aug 2025 08:31 EDT Port Huron / Blue Water Bridge upbound
25 Aug 2025 02:18 EDT Detroit River / Ambassador Bridge upbound
24 Aug 2025 00:56 EDT Welland Canal (Thorold) upbound
20 Aug 2025 06:10 EDT Detroit River / Ambassador Bridge downbound
20 Aug 2025 00:24 EDT Port Huron / Blue Water Bridge downbound
15 Aug 2025 23:30 EDT Soo Locks (St. Marys River) downbound
11 Aug 2025 08:08 EDT Soo Locks (St. Marys River) upbound
10 Aug 2025 12:32 EDT Straits of Mackinac eastbound
8 Aug 2025 12:38 EDT Straits of Mackinac westbound
7 Aug 2025 16:22 EDT Straits of Mackinac eastbound
5 Aug 2025 11:48 EDT Straits of Mackinac westbound
3 Aug 2025 00:11 EDT Soo Locks (St. Marys River) downbound
31 Jul 2025 19:59 CDT Duluth Ship Canal outbound
July 2025 11 passages
Date Local time Chokepoint Direction
31 Jul 2025 17:03 CDT Duluth Ship Canal inbound
30 Jul 2025 00:29 EDT Soo Locks (St. Marys River) upbound
28 Jul 2025 06:11 EDT Soo Locks (St. Marys River) downbound
27 Jul 2025 14:43 EDT Soo Locks (St. Marys River) upbound
26 Jul 2025 16:41 EDT Straits of Mackinac eastbound
24 Jul 2025 22:57 EDT Straits of Mackinac westbound
22 Jul 2025 20:20 EDT Soo Locks (St. Marys River) downbound
22 Jul 2025 07:19 EDT Soo Locks (St. Marys River) upbound
20 Jul 2025 17:51 EDT Straits of Mackinac eastbound
18 Jul 2025 14:18 EDT Straits of Mackinac westbound
14 Jul 2025 05:14 EDT Port Huron / Blue Water Bridge upbound
June 2025 19 passages
Date Local time Chokepoint Direction
20 Jun 2025 11:11 EDT Detroit River / Ambassador Bridge upbound
19 Jun 2025 10:44 EDT Welland Canal (Thorold) upbound
18 Jun 2025 04:37 EDT Welland Canal (Thorold) downbound
17 Jun 2025 04:49 EDT Detroit River / Ambassador Bridge downbound
16 Jun 2025 23:14 EDT Port Huron / Blue Water Bridge downbound
16 Jun 2025 02:03 EDT Straits of Mackinac eastbound
15 Jun 2025 09:39 EDT Straits of Mackinac westbound
14 Jun 2025 23:40 EDT Soo Locks (St. Marys River) downbound
10 Jun 2025 17:40 EDT Soo Locks (St. Marys River) upbound
9 Jun 2025 04:28 EDT Port Huron / Blue Water Bridge upbound
8 Jun 2025 21:38 EDT Detroit River / Ambassador Bridge upbound
8 Jun 2025 06:24 EDT Detroit River / Ambassador Bridge downbound
8 Jun 2025 00:56 EDT Port Huron / Blue Water Bridge downbound
6 Jun 2025 02:47 EDT Soo Locks (St. Marys River) downbound
3 Jun 2025 00:09 EDT Soo Locks (St. Marys River) upbound
2 Jun 2025 02:00 EDT Port Huron / Blue Water Bridge upbound
1 Jun 2025 20:14 EDT Detroit River / Ambassador Bridge upbound
1 Jun 2025 07:20 EDT Detroit River / Ambassador Bridge downbound
31 May 2025 23:50 EDT Port Huron / Blue Water Bridge downbound
May 2025 23 passages
Date Local time Chokepoint Direction
29 May 2025 23:47 EDT Straits of Mackinac eastbound
28 May 2025 18:05 EDT Straits of Mackinac westbound
24 May 2025 20:01 EDT Port Huron / Blue Water Bridge upbound
24 May 2025 12:18 EDT Detroit River / Ambassador Bridge upbound
23 May 2025 13:29 EDT Welland Canal (Thorold) upbound
18 May 2025 18:17 EDT Welland Canal (Thorold) downbound
17 May 2025 18:45 EDT Detroit River / Ambassador Bridge downbound
17 May 2025 13:13 EDT Port Huron / Blue Water Bridge downbound
15 May 2025 00:31 EDT Soo Locks (St. Marys River) downbound
14 May 2025 10:19 EDT Soo Locks (St. Marys River) upbound
12 May 2025 06:39 EDT Port Huron / Blue Water Bridge upbound
11 May 2025 15:16 EDT Port Huron / Blue Water Bridge downbound
9 May 2025 18:58 EDT Port Huron / Blue Water Bridge upbound
9 May 2025 13:13 EDT Detroit River / Ambassador Bridge upbound
8 May 2025 21:06 EDT Detroit River / Ambassador Bridge downbound
8 May 2025 15:47 EDT Port Huron / Blue Water Bridge downbound
6 May 2025 18:05 EDT Soo Locks (St. Marys River) downbound
6 May 2025 03:08 EDT Soo Locks (St. Marys River) upbound
5 May 2025 01:55 EDT Straits of Mackinac eastbound
3 May 2025 19:01 EDT Straits of Mackinac westbound
2 May 2025 06:30 EDT Port Huron / Blue Water Bridge upbound
2 May 2025 00:48 EDT Detroit River / Ambassador Bridge upbound
30 Apr 2025 20:50 EDT Welland Canal (Thorold) upbound
April 2025 11 passages
Date Local time Chokepoint Direction
29 Apr 2025 04:23 EDT Welland Canal (Thorold) downbound
28 Apr 2025 04:54 EDT Detroit River / Ambassador Bridge downbound
27 Apr 2025 23:18 EDT Port Huron / Blue Water Bridge downbound
25 Apr 2025 09:36 EDT Port Huron / Blue Water Bridge upbound
22 Apr 2025 03:56 EDT Port Huron / Blue Water Bridge downbound
21 Apr 2025 01:45 EDT Soo Locks (St. Marys River) downbound
18 Apr 2025 22:35 CDT Duluth Ship Canal outbound
18 Apr 2025 01:55 CDT Duluth Ship Canal inbound
13 Apr 2025 16:07 CDT Duluth Ship Canal outbound
13 Apr 2025 12:55 CDT Duluth Ship Canal inbound
12 Apr 2025 08:18 EDT Soo Locks (St. Marys River) upbound
January 2025 16 passages
Date Local time Chokepoint Direction
29 Jan 2025 23:06 EST Port Huron / Blue Water Bridge upbound
29 Jan 2025 05:20 EST Detroit River / Ambassador Bridge upbound
17 Jan 2025 16:28 EST Detroit River / Ambassador Bridge downbound
17 Jan 2025 08:36 EST Port Huron / Blue Water Bridge downbound
15 Jan 2025 23:41 EST Soo Locks (St. Marys River) downbound
13 Jan 2025 12:15 EST Soo Locks (St. Marys River) upbound
12 Jan 2025 15:01 EST Port Huron / Blue Water Bridge upbound
12 Jan 2025 05:28 EST Port Huron / Blue Water Bridge downbound
10 Jan 2025 10:31 EST Port Huron / Blue Water Bridge upbound
10 Jan 2025 04:57 EST Detroit River / Ambassador Bridge upbound
9 Jan 2025 06:37 EST Welland Canal (Thorold) upbound
5 Jan 2025 17:12 EST Welland Canal (Thorold) downbound
4 Jan 2025 11:24 EST Detroit River / Ambassador Bridge downbound
4 Jan 2025 06:09 EST Port Huron / Blue Water Bridge downbound
3 Jan 2025 09:43 EST Soo Locks (St. Marys River) downbound
1 Jan 2025 15:22 CST Duluth Ship Canal inbound

2024 season

December 2024 23 passages
Date Local time Chokepoint Direction
31 Dec 2024 09:50 EST Soo Locks (St. Marys River) upbound
30 Dec 2024 05:53 EST Port Huron / Blue Water Bridge upbound
30 Dec 2024 00:28 EST Detroit River / Ambassador Bridge upbound
29 Dec 2024 03:00 EST Welland Canal (Thorold) upbound
27 Dec 2024 22:19 EST Welland Canal (Thorold) downbound
26 Dec 2024 16:34 EST Port Huron / Blue Water Bridge downbound
24 Dec 2024 08:01 CST Superior Entry outbound
23 Dec 2024 22:03 CST Superior Entry inbound
22 Dec 2024 15:05 EST Soo Locks (St. Marys River) upbound
21 Dec 2024 17:08 EST Port Huron / Blue Water Bridge upbound
21 Dec 2024 11:21 EST Detroit River / Ambassador Bridge upbound
20 Dec 2024 10:11 EST Welland Canal (Thorold) upbound
18 Dec 2024 14:03 EST Welland Canal (Thorold) downbound
17 Dec 2024 12:54 EST Detroit River / Ambassador Bridge downbound
17 Dec 2024 07:23 EST Port Huron / Blue Water Bridge downbound
16 Dec 2024 07:38 EST Soo Locks (St. Marys River) downbound
14 Dec 2024 05:56 CST Superior Entry inbound
13 Dec 2024 19:40 CST Duluth Ship Canal outbound
11 Dec 2024 12:31 CST Duluth Ship Canal inbound
10 Dec 2024 04:10 EST Soo Locks (St. Marys River) upbound
2 Dec 2024 12:52 EST Port Huron / Blue Water Bridge upbound
2 Dec 2024 07:22 EST Detroit River / Ambassador Bridge upbound
1 Dec 2024 02:17 EST Welland Canal (Thorold) upbound
November 2024 22 passages
Date Local time Chokepoint Direction
27 Nov 2024 09:45 EST Welland Canal (Thorold) downbound
25 Nov 2024 17:10 EST Detroit River / Ambassador Bridge downbound
25 Nov 2024 11:33 EST Port Huron / Blue Water Bridge downbound
23 Nov 2024 17:24 EST Port Huron / Blue Water Bridge upbound
23 Nov 2024 05:52 EST Detroit River / Ambassador Bridge upbound
22 Nov 2024 11:36 EST Port Huron / Blue Water Bridge downbound
19 Nov 2024 06:54 EST Port Huron / Blue Water Bridge upbound
19 Nov 2024 00:31 EST Detroit River / Ambassador Bridge upbound
18 Nov 2024 03:04 EST Welland Canal (Thorold) upbound
16 Nov 2024 21:34 EST Welland Canal (Thorold) downbound
15 Nov 2024 22:48 EST Detroit River / Ambassador Bridge downbound
15 Nov 2024 17:11 EST Port Huron / Blue Water Bridge downbound
14 Nov 2024 18:40 EST Soo Locks (St. Marys River) downbound
11 Nov 2024 19:57 EST Soo Locks (St. Marys River) upbound
10 Nov 2024 02:40 EST Port Huron / Blue Water Bridge upbound
9 Nov 2024 20:33 EST Detroit River / Ambassador Bridge upbound
8 Nov 2024 07:56 EST Welland Canal (Thorold) upbound
7 Nov 2024 02:07 EST Welland Canal (Thorold) downbound
6 Nov 2024 02:38 EST Detroit River / Ambassador Bridge downbound
5 Nov 2024 20:38 EST Port Huron / Blue Water Bridge downbound
4 Nov 2024 21:20 EST Soo Locks (St. Marys River) downbound
1 Nov 2024 23:25 EDT Soo Locks (St. Marys River) upbound
October 2024 25 passages
Date Local time Chokepoint Direction
31 Oct 2024 15:15 EDT Port Huron / Blue Water Bridge upbound
30 Oct 2024 03:07 EDT Welland Canal (Thorold) upbound
26 Oct 2024 08:33 EDT Welland Canal (Thorold) downbound
25 Oct 2024 08:48 EDT Detroit River / Ambassador Bridge downbound
25 Oct 2024 02:37 EDT Port Huron / Blue Water Bridge downbound
22 Oct 2024 03:46 EDT Port Huron / Blue Water Bridge upbound
21 Oct 2024 21:30 EDT Detroit River / Ambassador Bridge upbound
21 Oct 2024 00:05 EDT Welland Canal (Thorold) upbound
19 Oct 2024 19:01 EDT Welland Canal (Thorold) downbound
18 Oct 2024 19:54 EDT Detroit River / Ambassador Bridge downbound
18 Oct 2024 13:23 EDT Port Huron / Blue Water Bridge downbound
17 Oct 2024 15:13 EDT Soo Locks (St. Marys River) downbound
14 Oct 2024 11:57 EDT Soo Locks (St. Marys River) upbound
13 Oct 2024 09:53 EDT Port Huron / Blue Water Bridge upbound
13 Oct 2024 03:38 EDT Detroit River / Ambassador Bridge upbound
12 Oct 2024 06:48 EDT Welland Canal (Thorold) upbound
11 Oct 2024 02:03 EDT Welland Canal (Thorold) downbound
10 Oct 2024 01:03 EDT Detroit River / Ambassador Bridge downbound
9 Oct 2024 19:13 EDT Port Huron / Blue Water Bridge downbound
8 Oct 2024 20:49 EDT Soo Locks (St. Marys River) downbound
7 Oct 2024 10:09 CDT Superior Entry outbound
6 Oct 2024 19:48 CDT Superior Entry inbound
5 Oct 2024 06:15 CDT Superior Entry outbound
5 Oct 2024 00:07 CDT Duluth Ship Canal inbound
3 Oct 2024 17:13 EDT Soo Locks (St. Marys River) upbound
September 2024 15 passages
Date Local time Chokepoint Direction
29 Sep 2024 22:13 EDT Straits of Mackinac eastbound
27 Sep 2024 09:06 EDT Straits of Mackinac westbound
25 Sep 2024 00:37 EDT Soo Locks (St. Marys River) downbound
23 Sep 2024 12:22 EDT Soo Locks (St. Marys River) upbound
19 Sep 2024 19:40 EDT Port Huron / Blue Water Bridge upbound
19 Sep 2024 12:04 EDT Detroit River / Ambassador Bridge upbound
18 Sep 2024 13:23 EDT Detroit River / Ambassador Bridge downbound
18 Sep 2024 07:44 EDT Port Huron / Blue Water Bridge downbound
17 Sep 2024 06:41 EDT Soo Locks (St. Marys River) downbound
15 Sep 2024 19:58 EDT Soo Locks (St. Marys River) upbound
14 Sep 2024 17:36 EDT Port Huron / Blue Water Bridge upbound
14 Sep 2024 07:47 EDT Detroit River / Ambassador Bridge upbound
13 Sep 2024 03:24 EDT Detroit River / Ambassador Bridge downbound
12 Sep 2024 20:33 EDT Port Huron / Blue Water Bridge downbound
10 Sep 2024 10:37 EDT Port Huron / Blue Water Bridge upbound
April 2024 2 passages
Date Local time Chokepoint Direction
28 Apr 2024 11:37 EDT Detroit River / Ambassador Bridge upbound
27 Apr 2024 09:33 EDT Welland Canal (Thorold) upbound