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 · United States flag

Mark W. Barker

The Interlake Steamship Company · Self-unloader · 195 m. Range: Lakes only. 341 recorded passages across 6 chokepoints.

Last recorded passage

upbound at Detroit River / Ambassador Bridge

31 Dec 2025, 15:34 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 Mark W. Barker is today.

FreighterLog is the record, not the map. For where Mark W. Barker 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 Mark W. Barker 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. Mark W. Barker 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) MARK W. BARKER
MMSI 368251670
IMO IMO9962445
Call sign WDM9326
Length overall 195 m (640 ft)
Beam 24 m (79 ft)
AIS vessel type Cargo - No additional information
Hull type Self-unloader
Operator The Interlake Steamship Company
Flag United States

Passage record

  • 341 Passages January 2024 – December 2025
  • 6 Chokepoints of 7 monitored
  • 1 Jan 2024 First in archive UTC date
  • 31 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 16 passages
Date Local time Chokepoint Direction
31 Dec 2025 15:34 EST Detroit River / Ambassador Bridge upbound
27 Dec 2025 22:35 EST Detroit River / Ambassador Bridge downbound
27 Dec 2025 15:40 EST Port Huron / Blue Water Bridge downbound
24 Dec 2025 18:45 EST Port Huron / Blue Water Bridge upbound
24 Dec 2025 13:16 EST Detroit River / Ambassador Bridge upbound
23 Dec 2025 14:53 EST Welland Canal (Thorold) upbound
20 Dec 2025 14:15 EST Welland Canal (Thorold) downbound
11 Dec 2025 17:38 EST Detroit River / Ambassador Bridge downbound
11 Dec 2025 12:17 EST Port Huron / Blue Water Bridge downbound
10 Dec 2025 13:52 EST Straits of Mackinac eastbound
7 Dec 2025 12:58 EST Straits of Mackinac westbound
6 Dec 2025 20:20 EST Port Huron / Blue Water Bridge upbound
6 Dec 2025 14:13 EST Detroit River / Ambassador Bridge upbound
2 Dec 2025 06:37 EST Detroit River / Ambassador Bridge downbound
2 Dec 2025 01:19 EST Port Huron / Blue Water Bridge downbound
1 Dec 2025 05:18 EST Straits of Mackinac eastbound
November 2025 12 passages
Date Local time Chokepoint Direction
25 Nov 2025 18:37 EST Straits of Mackinac westbound
25 Nov 2025 01:06 EST Port Huron / Blue Water Bridge upbound
24 Nov 2025 19:40 EST Detroit River / Ambassador Bridge upbound
23 Nov 2025 04:21 EST Welland Canal (Thorold) upbound
20 Nov 2025 11:38 EST Welland Canal (Thorold) downbound
18 Nov 2025 03:15 EST Detroit River / Ambassador Bridge downbound
17 Nov 2025 21:01 EST Port Huron / Blue Water Bridge downbound
15 Nov 2025 05:15 EST Port Huron / Blue Water Bridge upbound
14 Nov 2025 22:39 EST Detroit River / Ambassador Bridge upbound
3 Nov 2025 14:52 EST Detroit River / Ambassador Bridge downbound
3 Nov 2025 09:11 EST Port Huron / Blue Water Bridge downbound
2 Nov 2025 14:38 EST Straits of Mackinac eastbound
October 2025 22 passages
Date Local time Chokepoint Direction
30 Oct 2025 20:19 EDT Straits of Mackinac westbound
30 Oct 2025 02:41 EDT Port Huron / Blue Water Bridge upbound
29 Oct 2025 21:06 EDT Detroit River / Ambassador Bridge upbound
27 Oct 2025 21:52 EDT Detroit River / Ambassador Bridge downbound
27 Oct 2025 16:23 EDT Port Huron / Blue Water Bridge downbound
26 Oct 2025 14:07 EDT Straits of Mackinac eastbound
23 Oct 2025 21:41 EDT Straits of Mackinac westbound
23 Oct 2025 03:55 EDT Port Huron / Blue Water Bridge upbound
22 Oct 2025 22:12 EDT Detroit River / Ambassador Bridge upbound
19 Oct 2025 18:32 EDT Detroit River / Ambassador Bridge downbound
19 Oct 2025 13:11 EDT Port Huron / Blue Water Bridge downbound
18 Oct 2025 19:00 EDT Straits of Mackinac eastbound
15 Oct 2025 20:15 EDT Straits of Mackinac westbound
15 Oct 2025 00:53 EDT Port Huron / Blue Water Bridge upbound
14 Oct 2025 18:44 EDT Detroit River / Ambassador Bridge upbound
9 Oct 2025 00:16 EDT Detroit River / Ambassador Bridge downbound
8 Oct 2025 18:43 EDT Port Huron / Blue Water Bridge downbound
7 Oct 2025 15:46 EDT Straits of Mackinac eastbound
5 Oct 2025 15:06 EDT Straits of Mackinac westbound
4 Oct 2025 09:49 EDT Port Huron / Blue Water Bridge upbound
4 Oct 2025 03:19 EDT Detroit River / Ambassador Bridge upbound
30 Sep 2025 23:36 EDT Detroit River / Ambassador Bridge downbound
September 2025 17 passages
Date Local time Chokepoint Direction
30 Sep 2025 18:01 EDT Port Huron / Blue Water Bridge downbound
30 Sep 2025 00:54 EDT Straits of Mackinac eastbound
24 Sep 2025 19:18 EDT Straits of Mackinac westbound
24 Sep 2025 02:03 EDT Port Huron / Blue Water Bridge upbound
23 Sep 2025 20:18 EDT Detroit River / Ambassador Bridge upbound
19 Sep 2025 17:43 EDT Detroit River / Ambassador Bridge downbound
19 Sep 2025 12:18 EDT Port Huron / Blue Water Bridge downbound
18 Sep 2025 09:52 EDT Straits of Mackinac eastbound
13 Sep 2025 19:01 EDT Straits of Mackinac westbound
12 Sep 2025 07:56 EDT Port Huron / Blue Water Bridge upbound
12 Sep 2025 01:44 EDT Detroit River / Ambassador Bridge upbound
10 Sep 2025 14:30 EDT Detroit River / Ambassador Bridge downbound
10 Sep 2025 08:48 EDT Port Huron / Blue Water Bridge downbound
9 Sep 2025 14:01 EDT Straits of Mackinac eastbound
7 Sep 2025 03:08 EDT Straits of Mackinac westbound
6 Sep 2025 07:13 EDT Straits of Mackinac eastbound
1 Sep 2025 01:56 EDT Straits of Mackinac westbound
August 2025 18 passages
Date Local time Chokepoint Direction
30 Aug 2025 23:43 EDT Port Huron / Blue Water Bridge upbound
30 Aug 2025 18:55 EDT Detroit River / Ambassador Bridge upbound
27 Aug 2025 13:55 EDT Detroit River / Ambassador Bridge downbound
27 Aug 2025 08:37 EDT Port Huron / Blue Water Bridge downbound
26 Aug 2025 06:56 EDT Straits of Mackinac eastbound
24 Aug 2025 10:49 EDT Straits of Mackinac westbound
23 Aug 2025 10:51 EDT Detroit River / Ambassador Bridge upbound
19 Aug 2025 06:23 EDT Detroit River / Ambassador Bridge downbound
19 Aug 2025 00:43 EDT Port Huron / Blue Water Bridge downbound
17 Aug 2025 06:23 EDT Straits of Mackinac eastbound
15 Aug 2025 05:38 EDT Straits of Mackinac westbound
14 Aug 2025 04:11 EDT Detroit River / Ambassador Bridge upbound
11 Aug 2025 12:43 EDT Detroit River / Ambassador Bridge downbound
11 Aug 2025 07:24 EDT Port Huron / Blue Water Bridge downbound
9 Aug 2025 10:34 EDT Detroit River / Ambassador Bridge upbound
5 Aug 2025 06:37 EDT Detroit River / Ambassador Bridge downbound
5 Aug 2025 00:36 EDT Port Huron / Blue Water Bridge downbound
3 Aug 2025 17:26 EDT Straits of Mackinac eastbound
July 2025 17 passages
Date Local time Chokepoint Direction
30 Jul 2025 13:12 EDT Straits of Mackinac westbound
29 Jul 2025 20:16 EDT Port Huron / Blue Water Bridge upbound
29 Jul 2025 12:39 EDT Detroit River / Ambassador Bridge upbound
26 Jul 2025 07:25 EDT Detroit River / Ambassador Bridge downbound
26 Jul 2025 02:09 EDT Port Huron / Blue Water Bridge downbound
25 Jul 2025 05:45 EDT Straits of Mackinac eastbound
20 Jul 2025 11:49 EDT Straits of Mackinac westbound
19 Jul 2025 17:52 EDT Port Huron / Blue Water Bridge upbound
19 Jul 2025 12:21 EDT Detroit River / Ambassador Bridge upbound
14 Jul 2025 14:47 EDT Detroit River / Ambassador Bridge downbound
14 Jul 2025 09:31 EDT Port Huron / Blue Water Bridge downbound
13 Jul 2025 06:35 EDT Straits of Mackinac eastbound
9 Jul 2025 05:12 EDT Straits of Mackinac westbound
8 Jul 2025 03:54 EDT Port Huron / Blue Water Bridge upbound
7 Jul 2025 22:01 EDT Detroit River / Ambassador Bridge upbound
1 Jul 2025 14:33 EDT Detroit River / Ambassador Bridge downbound
1 Jul 2025 08:45 EDT Port Huron / Blue Water Bridge downbound
June 2025 13 passages
Date Local time Chokepoint Direction
30 Jun 2025 15:28 EDT Straits of Mackinac eastbound
23 Jun 2025 22:15 EDT Straits of Mackinac westbound
22 Jun 2025 13:55 EDT Port Huron / Blue Water Bridge upbound
22 Jun 2025 08:02 EDT Detroit River / Ambassador Bridge upbound
16 Jun 2025 13:04 EDT Detroit River / Ambassador Bridge downbound
16 Jun 2025 07:02 EDT Port Huron / Blue Water Bridge downbound
15 Jun 2025 14:21 EDT Straits of Mackinac eastbound
12 Jun 2025 15:06 EDT Straits of Mackinac westbound
11 Jun 2025 22:42 EDT Port Huron / Blue Water Bridge upbound
11 Jun 2025 15:46 EDT Detroit River / Ambassador Bridge upbound
9 Jun 2025 16:02 EDT Detroit River / Ambassador Bridge upbound
9 Jun 2025 10:37 EDT Port Huron / Blue Water Bridge downbound
6 Jun 2025 00:53 EDT Straits of Mackinac eastbound
May 2025 21 passages
Date Local time Chokepoint Direction
30 May 2025 19:39 EDT Straits of Mackinac westbound
30 May 2025 02:25 EDT Port Huron / Blue Water Bridge upbound
29 May 2025 20:50 EDT Detroit River / Ambassador Bridge upbound
27 May 2025 15:04 EDT Detroit River / Ambassador Bridge downbound
27 May 2025 09:13 EDT Port Huron / Blue Water Bridge downbound
26 May 2025 08:17 EDT Straits of Mackinac eastbound
24 May 2025 10:39 EDT Straits of Mackinac westbound
23 May 2025 17:30 EDT Port Huron / Blue Water Bridge upbound
23 May 2025 12:02 EDT Detroit River / Ambassador Bridge upbound
18 May 2025 04:41 EDT Detroit River / Ambassador Bridge downbound
17 May 2025 23:19 EDT Port Huron / Blue Water Bridge downbound
17 May 2025 06:29 EDT Straits of Mackinac eastbound
14 May 2025 00:05 EDT Straits of Mackinac westbound
13 May 2025 08:11 EDT Port Huron / Blue Water Bridge upbound
13 May 2025 02:04 EDT Detroit River / Ambassador Bridge upbound
8 May 2025 17:15 EDT Detroit River / Ambassador Bridge downbound
8 May 2025 11:33 EDT Port Huron / Blue Water Bridge downbound
7 May 2025 08:57 EDT Straits of Mackinac eastbound
2 May 2025 08:48 EDT Straits of Mackinac westbound
1 May 2025 16:43 EDT Port Huron / Blue Water Bridge upbound
1 May 2025 11:02 EDT Detroit River / Ambassador Bridge upbound
April 2025 10 passages
Date Local time Chokepoint Direction
23 Apr 2025 02:16 EDT Detroit River / Ambassador Bridge downbound
22 Apr 2025 20:47 EDT Port Huron / Blue Water Bridge downbound
21 Apr 2025 14:53 EDT Straits of Mackinac eastbound
17 Apr 2025 01:33 EDT Straits of Mackinac westbound
15 Apr 2025 18:40 EDT Port Huron / Blue Water Bridge upbound
15 Apr 2025 12:34 EDT Detroit River / Ambassador Bridge upbound
8 Apr 2025 01:46 EDT Detroit River / Ambassador Bridge downbound
7 Apr 2025 07:44 EDT Detroit River / Ambassador Bridge upbound
4 Apr 2025 20:09 EDT Welland Canal (Thorold) upbound
2 Apr 2025 02:11 EDT Welland Canal (Thorold) downbound
January 2025 5 passages
Date Local time Chokepoint Direction
18 Jan 2025 10:41 EST Port Huron / Blue Water Bridge downbound
16 Jan 2025 11:24 EST Straits of Mackinac eastbound
8 Jan 2025 22:08 EST Straits of Mackinac westbound
7 Jan 2025 23:54 EST Port Huron / Blue Water Bridge upbound
7 Jan 2025 18:40 EST Detroit River / Ambassador Bridge upbound

2024 season

December 2024 16 passages
Date Local time Chokepoint Direction
24 Dec 2024 01:43 EST Detroit River / Ambassador Bridge upbound
23 Dec 2024 19:38 EST Port Huron / Blue Water Bridge downbound
22 Dec 2024 13:05 EST Soo Locks (St. Marys River) downbound
20 Dec 2024 04:34 CST Duluth Ship Canal outbound
20 Dec 2024 00:53 CST Duluth Ship Canal inbound
18 Dec 2024 14:01 EST Soo Locks (St. Marys River) upbound
18 Dec 2024 05:06 EST Straits of Mackinac eastbound
16 Dec 2024 01:21 EST Straits of Mackinac westbound
10 Dec 2024 21:37 EST Port Huron / Blue Water Bridge upbound
10 Dec 2024 16:13 EST Detroit River / Ambassador Bridge upbound
9 Dec 2024 07:10 EST Detroit River / Ambassador Bridge downbound
9 Dec 2024 01:48 EST Port Huron / Blue Water Bridge downbound
7 Dec 2024 11:36 EST Port Huron / Blue Water Bridge upbound
7 Dec 2024 05:21 EST Detroit River / Ambassador Bridge upbound
1 Dec 2024 21:12 EST Detroit River / Ambassador Bridge upbound
1 Dec 2024 15:09 EST Port Huron / Blue Water Bridge downbound
November 2024 20 passages
Date Local time Chokepoint Direction
30 Nov 2024 09:14 EST Straits of Mackinac eastbound
28 Nov 2024 09:06 EST Straits of Mackinac westbound
27 Nov 2024 16:40 EST Port Huron / Blue Water Bridge upbound
27 Nov 2024 10:49 EST Detroit River / Ambassador Bridge upbound
24 Nov 2024 19:14 EST Detroit River / Ambassador Bridge upbound
24 Nov 2024 13:23 EST Port Huron / Blue Water Bridge downbound
23 Nov 2024 09:13 EST Straits of Mackinac eastbound
19 Nov 2024 16:58 EST Straits of Mackinac westbound
18 Nov 2024 18:23 EST Port Huron / Blue Water Bridge upbound
18 Nov 2024 12:30 EST Detroit River / Ambassador Bridge upbound
16 Nov 2024 00:22 EST Detroit River / Ambassador Bridge downbound
15 Nov 2024 18:18 EST Port Huron / Blue Water Bridge downbound
14 Nov 2024 14:18 EST Straits of Mackinac eastbound
11 Nov 2024 08:43 EST Straits of Mackinac westbound
10 Nov 2024 15:29 EST Port Huron / Blue Water Bridge upbound
10 Nov 2024 09:35 EST Detroit River / Ambassador Bridge upbound
6 Nov 2024 03:33 EST Detroit River / Ambassador Bridge downbound
5 Nov 2024 20:57 EST Port Huron / Blue Water Bridge downbound
4 Nov 2024 03:30 EST Straits of Mackinac eastbound
31 Oct 2024 21:45 EDT Straits of Mackinac westbound
October 2024 15 passages
Date Local time Chokepoint Direction
29 Oct 2024 17:29 EDT Port Huron / Blue Water Bridge upbound
29 Oct 2024 09:57 EDT Detroit River / Ambassador Bridge upbound
25 Oct 2024 17:02 EDT Detroit River / Ambassador Bridge downbound
25 Oct 2024 10:58 EDT Port Huron / Blue Water Bridge downbound
21 Oct 2024 12:53 EDT Straits of Mackinac eastbound
18 Oct 2024 23:01 EDT Straits of Mackinac westbound
18 Oct 2024 06:30 EDT Port Huron / Blue Water Bridge upbound
17 Oct 2024 14:52 EDT Detroit River / Ambassador Bridge upbound
10 Oct 2024 02:26 EDT Detroit River / Ambassador Bridge downbound
9 Oct 2024 19:51 EDT Port Huron / Blue Water Bridge downbound
8 Oct 2024 15:10 EDT Straits of Mackinac eastbound
6 Oct 2024 05:10 EDT Straits of Mackinac westbound
5 Oct 2024 11:55 EDT Straits of Mackinac eastbound
3 Oct 2024 11:30 EDT Straits of Mackinac westbound
2 Oct 2024 18:34 EDT Straits of Mackinac eastbound
September 2024 16 passages
Date Local time Chokepoint Direction
28 Sep 2024 22:39 EDT Port Huron / Blue Water Bridge upbound
28 Sep 2024 14:57 EDT Detroit River / Ambassador Bridge upbound
25 Sep 2024 09:05 EDT Detroit River / Ambassador Bridge downbound
25 Sep 2024 03:40 EDT Port Huron / Blue Water Bridge downbound
23 Sep 2024 22:16 EDT Straits of Mackinac eastbound
21 Sep 2024 01:56 EDT Straits of Mackinac westbound
20 Sep 2024 09:39 EDT Port Huron / Blue Water Bridge upbound
20 Sep 2024 03:46 EDT Detroit River / Ambassador Bridge upbound
15 Sep 2024 22:38 EDT Welland Canal (Thorold) upbound
13 Sep 2024 07:23 EDT Welland Canal (Thorold) downbound
8 Sep 2024 03:38 EDT Detroit River / Ambassador Bridge downbound
7 Sep 2024 21:27 EDT Port Huron / Blue Water Bridge downbound
3 Sep 2024 22:25 EDT Port Huron / Blue Water Bridge upbound
3 Sep 2024 15:37 EDT Detroit River / Ambassador Bridge upbound
1 Sep 2024 23:04 EDT Detroit River / Ambassador Bridge downbound
1 Sep 2024 17:02 EDT Port Huron / Blue Water Bridge downbound
August 2024 19 passages
Date Local time Chokepoint Direction
30 Aug 2024 21:27 EDT Port Huron / Blue Water Bridge upbound
30 Aug 2024 14:35 EDT Detroit River / Ambassador Bridge upbound
28 Aug 2024 00:24 EDT Detroit River / Ambassador Bridge downbound
27 Aug 2024 17:58 EDT Port Huron / Blue Water Bridge downbound
26 Aug 2024 13:11 EDT Straits of Mackinac eastbound
23 Aug 2024 04:47 EDT Port Huron / Blue Water Bridge upbound
22 Aug 2024 11:51 EDT Detroit River / Ambassador Bridge upbound
20 Aug 2024 12:37 EDT Welland Canal (Thorold) upbound
17 Aug 2024 20:17 EDT Welland Canal (Thorold) downbound
15 Aug 2024 05:29 EDT Detroit River / Ambassador Bridge downbound
14 Aug 2024 23:18 EDT Port Huron / Blue Water Bridge downbound
13 Aug 2024 18:13 EDT Straits of Mackinac eastbound
11 Aug 2024 14:17 EDT Straits of Mackinac westbound
10 Aug 2024 20:30 EDT Port Huron / Blue Water Bridge upbound
10 Aug 2024 13:59 EDT Detroit River / Ambassador Bridge upbound
7 Aug 2024 01:40 EDT Detroit River / Ambassador Bridge upbound
6 Aug 2024 19:57 EDT Port Huron / Blue Water Bridge downbound
4 Aug 2024 15:34 EDT Port Huron / Blue Water Bridge upbound
3 Aug 2024 23:32 EDT Detroit River / Ambassador Bridge upbound
July 2024 20 passages
Date Local time Chokepoint Direction
30 Jul 2024 03:36 EDT Detroit River / Ambassador Bridge downbound
29 Jul 2024 21:28 EDT Port Huron / Blue Water Bridge downbound
29 Jul 2024 02:11 EDT Straits of Mackinac eastbound
26 Jul 2024 09:44 EDT Straits of Mackinac westbound
25 Jul 2024 16:25 EDT Port Huron / Blue Water Bridge upbound
25 Jul 2024 10:24 EDT Detroit River / Ambassador Bridge upbound
21 Jul 2024 16:28 EDT Detroit River / Ambassador Bridge downbound
21 Jul 2024 10:13 EDT Port Huron / Blue Water Bridge downbound
20 Jul 2024 00:44 EDT Straits of Mackinac eastbound
17 Jul 2024 17:07 EDT Straits of Mackinac westbound
16 Jul 2024 23:11 EDT Port Huron / Blue Water Bridge upbound
16 Jul 2024 17:27 EDT Detroit River / Ambassador Bridge upbound
12 Jul 2024 19:28 EDT Detroit River / Ambassador Bridge downbound
12 Jul 2024 13:00 EDT Port Huron / Blue Water Bridge downbound
11 Jul 2024 02:15 EDT Port Huron / Blue Water Bridge upbound
10 Jul 2024 20:46 EDT Detroit River / Ambassador Bridge upbound
8 Jul 2024 17:12 EDT Detroit River / Ambassador Bridge upbound
8 Jul 2024 11:06 EDT Port Huron / Blue Water Bridge downbound
3 Jul 2024 12:33 EDT Straits of Mackinac eastbound
1 Jul 2024 05:05 EDT Straits of Mackinac westbound
June 2024 24 passages
Date Local time Chokepoint Direction
30 Jun 2024 11:34 EDT Port Huron / Blue Water Bridge upbound
30 Jun 2024 05:21 EDT Detroit River / Ambassador Bridge upbound
28 Jun 2024 04:24 EDT Detroit River / Ambassador Bridge downbound
27 Jun 2024 22:08 EDT Port Huron / Blue Water Bridge downbound
26 Jun 2024 12:05 EDT Straits of Mackinac eastbound
24 Jun 2024 13:26 EDT Straits of Mackinac westbound
23 Jun 2024 21:12 EDT Port Huron / Blue Water Bridge upbound
23 Jun 2024 14:24 EDT Detroit River / Ambassador Bridge upbound
19 Jun 2024 14:08 EDT Detroit River / Ambassador Bridge downbound
19 Jun 2024 08:37 EDT Port Huron / Blue Water Bridge downbound
18 Jun 2024 13:11 EDT Soo Locks (St. Marys River) downbound
17 Jun 2024 00:58 CDT Duluth Ship Canal outbound
16 Jun 2024 10:39 CDT Duluth Ship Canal inbound
15 Jun 2024 05:13 EDT Soo Locks (St. Marys River) upbound
14 Jun 2024 08:53 EDT Port Huron / Blue Water Bridge upbound
14 Jun 2024 02:51 EDT Detroit River / Ambassador Bridge upbound
7 Jun 2024 18:51 EDT Detroit River / Ambassador Bridge downbound
7 Jun 2024 13:23 EDT Port Huron / Blue Water Bridge downbound
6 Jun 2024 18:23 EDT Soo Locks (St. Marys River) downbound
5 Jun 2024 07:35 CDT Duluth Ship Canal outbound
3 Jun 2024 14:06 CDT Duluth Ship Canal inbound
2 Jun 2024 10:23 EDT Soo Locks (St. Marys River) upbound
1 Jun 2024 14:01 EDT Port Huron / Blue Water Bridge upbound
1 Jun 2024 08:01 EDT Detroit River / Ambassador Bridge upbound
May 2024 18 passages
Date Local time Chokepoint Direction
30 May 2024 01:58 EDT Detroit River / Ambassador Bridge downbound
29 May 2024 18:25 EDT Port Huron / Blue Water Bridge downbound
28 May 2024 04:49 EDT Straits of Mackinac eastbound
26 May 2024 03:07 EDT Straits of Mackinac westbound
25 May 2024 10:14 EDT Port Huron / Blue Water Bridge upbound
25 May 2024 04:47 EDT Detroit River / Ambassador Bridge upbound
22 May 2024 15:14 EDT Detroit River / Ambassador Bridge downbound
22 May 2024 09:42 EDT Port Huron / Blue Water Bridge downbound
21 May 2024 16:23 EDT Straits of Mackinac eastbound
18 May 2024 16:28 EDT Straits of Mackinac westbound
18 May 2024 00:53 EDT Port Huron / Blue Water Bridge upbound
17 May 2024 18:53 EDT Detroit River / Ambassador Bridge upbound
15 May 2024 10:00 EDT Detroit River / Ambassador Bridge downbound
14 May 2024 11:14 EDT Port Huron / Blue Water Bridge downbound
11 May 2024 17:03 EDT Port Huron / Blue Water Bridge upbound
11 May 2024 09:07 EDT Detroit River / Ambassador Bridge upbound
3 May 2024 10:42 EDT Detroit River / Ambassador Bridge downbound
3 May 2024 03:16 EDT Port Huron / Blue Water Bridge downbound
April 2024 17 passages
Date Local time Chokepoint Direction
29 Apr 2024 03:12 EDT Straits of Mackinac eastbound
26 Apr 2024 09:25 EDT Straits of Mackinac westbound
25 Apr 2024 16:47 EDT Port Huron / Blue Water Bridge upbound
25 Apr 2024 10:08 EDT Detroit River / Ambassador Bridge upbound
21 Apr 2024 23:11 EDT Detroit River / Ambassador Bridge downbound
21 Apr 2024 16:24 EDT Port Huron / Blue Water Bridge downbound
20 Apr 2024 12:47 EDT Straits of Mackinac eastbound
18 Apr 2024 18:05 EDT Straits of Mackinac westbound
16 Apr 2024 15:50 EDT Port Huron / Blue Water Bridge upbound
16 Apr 2024 09:26 EDT Detroit River / Ambassador Bridge upbound
11 Apr 2024 13:50 EDT Detroit River / Ambassador Bridge upbound
11 Apr 2024 08:12 EDT Port Huron / Blue Water Bridge downbound
9 Apr 2024 20:08 EDT Port Huron / Blue Water Bridge upbound
9 Apr 2024 13:53 EDT Detroit River / Ambassador Bridge upbound
5 Apr 2024 15:22 EDT Detroit River / Ambassador Bridge downbound
5 Apr 2024 10:00 EDT Port Huron / Blue Water Bridge downbound
4 Apr 2024 15:57 EDT Straits of Mackinac eastbound
March 2024 3 passages
Date Local time Chokepoint Direction
21 Mar 2024 17:56 EDT Straits of Mackinac westbound
20 Mar 2024 15:22 EDT Port Huron / Blue Water Bridge upbound
20 Mar 2024 08:49 EDT Detroit River / Ambassador Bridge upbound
January 2024 22 passages
Date Local time Chokepoint Direction
28 Jan 2024 21:59 EST Detroit River / Ambassador Bridge downbound
28 Jan 2024 16:40 EST Port Huron / Blue Water Bridge downbound
28 Jan 2024 00:44 EST Straits of Mackinac eastbound
25 Jan 2024 16:14 EST Straits of Mackinac westbound
25 Jan 2024 00:16 EST Port Huron / Blue Water Bridge upbound
24 Jan 2024 18:35 EST Detroit River / Ambassador Bridge upbound
20 Jan 2024 12:57 EST Detroit River / Ambassador Bridge downbound
20 Jan 2024 07:28 EST Port Huron / Blue Water Bridge downbound
19 Jan 2024 15:34 EST Straits of Mackinac eastbound
16 Jan 2024 08:45 EST Straits of Mackinac westbound
15 Jan 2024 11:24 EST Port Huron / Blue Water Bridge upbound
15 Jan 2024 05:13 EST Detroit River / Ambassador Bridge upbound
9 Jan 2024 16:44 EST Detroit River / Ambassador Bridge downbound
9 Jan 2024 11:12 EST Port Huron / Blue Water Bridge downbound
8 Jan 2024 13:43 EST Soo Locks (St. Marys River) downbound
7 Jan 2024 04:19 CST Duluth Ship Canal outbound
6 Jan 2024 10:20 CST Duluth Ship Canal inbound
4 Jan 2024 12:29 EST Soo Locks (St. Marys River) upbound
3 Jan 2024 13:38 EST Port Huron / Blue Water Bridge upbound
3 Jan 2024 07:40 EST Detroit River / Ambassador Bridge upbound
1 Jan 2024 14:42 EST Detroit River / Ambassador Bridge downbound
1 Jan 2024 08:52 EST Port Huron / Blue Water Bridge downbound