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

G L Ostrander

Andrie LLC · Tug/barge unit · 178 m. Range: Lakes only. 254 recorded passages across 6 chokepoints.

Last recorded passage

upbound at Port Huron / Blue Water Bridge

31 Dec 2025, 00:06 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 G L Ostrander is today. Her last recorded passage was 1 day 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 G L Ostrander 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 G L Ostrander 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. G L Ostrander 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) G L OSTRANDER
MMSI 366937490
IMO IMO7501106
Call sign WCV7620
Length overall 178 m (584 ft)
Beam 21 m (69 ft)
AIS vessel type Tug
Hull type Tug/barge unit
Operator Andrie LLC
Flag United States

Passage record

  • 254 Passages January 2024 – December 2025
  • 6 Chokepoints of 7 monitored
  • 21 Apr 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 12 passages
Date Local time Chokepoint Direction
31 Dec 2025 00:06 EST Port Huron / Blue Water Bridge upbound
30 Dec 2025 16:56 EST Detroit River / Ambassador Bridge upbound
26 Dec 2025 05:21 EST Detroit River / Ambassador Bridge downbound
25 Dec 2025 23:19 EST Port Huron / Blue Water Bridge downbound
24 Dec 2025 13:51 EST Straits of Mackinac eastbound
20 Dec 2025 07:12 EST Straits of Mackinac westbound
17 Dec 2025 10:07 EST Straits of Mackinac eastbound
14 Dec 2025 04:24 EST Straits of Mackinac westbound
11 Dec 2025 21:59 EST Straits of Mackinac eastbound
6 Dec 2025 02:30 EST Straits of Mackinac westbound
4 Dec 2025 08:51 EST Straits of Mackinac eastbound
1 Dec 2025 09:30 EST Straits of Mackinac westbound
November 2025 12 passages
Date Local time Chokepoint Direction
29 Nov 2025 09:01 EST Straits of Mackinac eastbound
22 Nov 2025 11:42 EST Straits of Mackinac westbound
21 Nov 2025 01:48 EST Port Huron / Blue Water Bridge upbound
20 Nov 2025 20:21 EST Detroit River / Ambassador Bridge upbound
18 Nov 2025 23:54 EST Detroit River / Ambassador Bridge downbound
18 Nov 2025 18:35 EST Port Huron / Blue Water Bridge downbound
14 Nov 2025 13:47 EST Port Huron / Blue Water Bridge upbound
14 Nov 2025 07:38 EST Detroit River / Ambassador Bridge upbound
12 Nov 2025 04:33 EST Detroit River / Ambassador Bridge upbound
11 Nov 2025 20:33 EST Port Huron / Blue Water Bridge downbound
9 Nov 2025 23:11 EST Straits of Mackinac eastbound
3 Nov 2025 14:54 EST Straits of Mackinac westbound
October 2025 14 passages
Date Local time Chokepoint Direction
31 Oct 2025 19:07 EDT Port Huron / Blue Water Bridge upbound
31 Oct 2025 12:18 EDT Detroit River / Ambassador Bridge upbound
29 Oct 2025 07:45 EDT Detroit River / Ambassador Bridge upbound
29 Oct 2025 01:31 EDT Port Huron / Blue Water Bridge downbound
26 Oct 2025 11:09 EDT Straits of Mackinac eastbound
22 Oct 2025 00:56 EDT Straits of Mackinac westbound
18 Oct 2025 23:31 EDT Straits of Mackinac eastbound
14 Oct 2025 09:05 EDT Straits of Mackinac westbound
11 Oct 2025 22:25 EDT Straits of Mackinac eastbound
9 Oct 2025 09:12 EDT Straits of Mackinac westbound
8 Oct 2025 09:16 EDT Straits of Mackinac eastbound
3 Oct 2025 21:41 EDT Straits of Mackinac westbound
2 Oct 2025 02:56 EDT Port Huron / Blue Water Bridge upbound
1 Oct 2025 20:54 EDT Detroit River / Ambassador Bridge upbound
September 2025 10 passages
Date Local time Chokepoint Direction
30 Sep 2025 18:20 EDT Detroit River / Ambassador Bridge downbound
30 Sep 2025 13:08 EDT Port Huron / Blue Water Bridge downbound
27 Sep 2025 10:27 EDT Straits of Mackinac eastbound
24 Sep 2025 22:15 EDT Straits of Mackinac westbound
23 Sep 2025 20:16 EDT Straits of Mackinac eastbound
17 Sep 2025 23:47 EDT Straits of Mackinac westbound
15 Sep 2025 17:02 EDT Detroit River / Ambassador Bridge upbound
11 Sep 2025 09:48 EDT Port Huron / Blue Water Bridge downbound
3 Sep 2025 14:09 EDT Straits of Mackinac westbound
1 Sep 2025 09:57 EDT Straits of Mackinac eastbound
August 2025 10 passages
Date Local time Chokepoint Direction
29 Aug 2025 21:49 EDT Straits of Mackinac westbound
28 Aug 2025 17:11 EDT Straits of Mackinac eastbound
23 Aug 2025 04:34 EDT Straits of Mackinac westbound
19 Aug 2025 18:00 EDT Straits of Mackinac eastbound
17 Aug 2025 06:19 EDT Straits of Mackinac westbound
13 Aug 2025 13:14 EDT Straits of Mackinac eastbound
11 Aug 2025 00:09 EDT Straits of Mackinac westbound
10 Aug 2025 00:19 EDT Straits of Mackinac eastbound
5 Aug 2025 09:00 EDT Straits of Mackinac westbound
4 Aug 2025 10:47 EDT Straits of Mackinac eastbound
July 2025 16 passages
Date Local time Chokepoint Direction
28 Jul 2025 22:36 EDT Straits of Mackinac westbound
27 Jul 2025 21:31 EDT Straits of Mackinac eastbound
25 Jul 2025 02:44 EDT Straits of Mackinac westbound
23 Jul 2025 16:50 EDT Straits of Mackinac eastbound
21 Jul 2025 04:41 EDT Straits of Mackinac westbound
18 Jul 2025 04:42 EDT Port Huron / Blue Water Bridge upbound
17 Jul 2025 22:04 EDT Detroit River / Ambassador Bridge upbound
15 Jul 2025 12:13 EDT Detroit River / Ambassador Bridge upbound
15 Jul 2025 05:21 EDT Port Huron / Blue Water Bridge downbound
13 Jul 2025 20:16 EDT Straits of Mackinac eastbound
11 Jul 2025 04:44 EDT Straits of Mackinac westbound
10 Jul 2025 04:31 EDT Straits of Mackinac eastbound
7 Jul 2025 15:09 EDT Straits of Mackinac westbound
6 Jul 2025 15:32 EDT Straits of Mackinac eastbound
1 Jul 2025 22:41 EDT Straits of Mackinac westbound
30 Jun 2025 22:31 EDT Straits of Mackinac eastbound
June 2025 17 passages
Date Local time Chokepoint Direction
27 Jun 2025 13:21 EDT Straits of Mackinac westbound
26 Jun 2025 13:20 EDT Straits of Mackinac eastbound
24 Jun 2025 01:58 EDT Straits of Mackinac westbound
22 Jun 2025 22:21 EDT Port Huron / Blue Water Bridge upbound
22 Jun 2025 16:55 EDT Detroit River / Ambassador Bridge upbound
21 Jun 2025 12:58 EDT Detroit River / Ambassador Bridge downbound
21 Jun 2025 05:39 EDT Port Huron / Blue Water Bridge downbound
18 Jun 2025 20:15 EDT Straits of Mackinac eastbound
16 Jun 2025 10:02 EDT Straits of Mackinac westbound
15 Jun 2025 09:44 EDT Straits of Mackinac eastbound
10 Jun 2025 07:17 EDT Straits of Mackinac westbound
9 Jun 2025 09:10 EDT Straits of Mackinac eastbound
6 Jun 2025 20:09 EDT Straits of Mackinac westbound
5 Jun 2025 17:11 EDT Soo Locks (St. Marys River) downbound
4 Jun 2025 04:09 CDT Superior Entry outbound
2 Jun 2025 23:31 CDT Duluth Ship Canal inbound
1 Jun 2025 16:21 EDT Soo Locks (St. Marys River) upbound
May 2025 20 passages
Date Local time Chokepoint Direction
31 May 2025 13:33 EDT Straits of Mackinac eastbound
29 May 2025 03:02 EDT Straits of Mackinac westbound
28 May 2025 02:33 EDT Straits of Mackinac eastbound
25 May 2025 07:37 EDT Straits of Mackinac westbound
24 May 2025 10:29 EDT Straits of Mackinac eastbound
19 May 2025 12:25 EDT Straits of Mackinac westbound
18 May 2025 11:30 EDT Straits of Mackinac eastbound
15 May 2025 21:19 EDT Straits of Mackinac westbound
14 May 2025 15:40 EDT Port Huron / Blue Water Bridge upbound
14 May 2025 08:42 EDT Detroit River / Ambassador Bridge upbound
13 May 2025 14:24 EDT Detroit River / Ambassador Bridge downbound
13 May 2025 07:27 EDT Port Huron / Blue Water Bridge downbound
12 May 2025 01:12 EDT Straits of Mackinac eastbound
9 May 2025 10:44 EDT Straits of Mackinac westbound
8 May 2025 04:01 EDT Port Huron / Blue Water Bridge upbound
7 May 2025 22:24 EDT Detroit River / Ambassador Bridge upbound
6 May 2025 13:31 EDT Detroit River / Ambassador Bridge downbound
6 May 2025 06:06 EDT Port Huron / Blue Water Bridge downbound
4 May 2025 22:21 EDT Straits of Mackinac eastbound
1 May 2025 02:38 EDT Straits of Mackinac westbound
April 2025 11 passages
Date Local time Chokepoint Direction
30 Apr 2025 00:44 EDT Straits of Mackinac eastbound
27 Apr 2025 06:28 EDT Straits of Mackinac westbound
26 Apr 2025 07:42 EDT Straits of Mackinac eastbound
21 Apr 2025 23:07 EDT Straits of Mackinac westbound
20 Apr 2025 02:41 EDT Straits of Mackinac eastbound
17 Apr 2025 08:07 EDT Straits of Mackinac westbound
15 Apr 2025 13:41 EDT Straits of Mackinac eastbound
10 Apr 2025 03:54 EDT Straits of Mackinac westbound
9 Apr 2025 00:50 EDT Straits of Mackinac eastbound
5 Apr 2025 16:16 EDT Straits of Mackinac westbound
4 Apr 2025 09:29 EDT Straits of Mackinac eastbound
January 2025 2 passages
Date Local time Chokepoint Direction
9 Jan 2025 00:10 EST Straits of Mackinac westbound
3 Jan 2025 17:12 EST Straits of Mackinac eastbound

2024 season

December 2024 11 passages
Date Local time Chokepoint Direction
29 Dec 2024 08:39 EST Straits of Mackinac westbound
28 Dec 2024 05:15 EST Port Huron / Blue Water Bridge upbound
27 Dec 2024 23:12 EST Detroit River / Ambassador Bridge upbound
25 Dec 2024 05:47 EST Detroit River / Ambassador Bridge downbound
25 Dec 2024 00:02 EST Port Huron / Blue Water Bridge downbound
22 Dec 2024 10:09 EST Straits of Mackinac eastbound
17 Dec 2024 08:50 EST Straits of Mackinac westbound
13 Dec 2024 17:59 EST Port Huron / Blue Water Bridge upbound
10 Dec 2024 04:10 EST Port Huron / Blue Water Bridge downbound
8 Dec 2024 07:59 EST Straits of Mackinac eastbound
2 Dec 2024 00:50 EST Straits of Mackinac westbound
November 2024 14 passages
Date Local time Chokepoint Direction
30 Nov 2024 18:50 EST Port Huron / Blue Water Bridge upbound
30 Nov 2024 13:02 EST Detroit River / Ambassador Bridge upbound
27 Nov 2024 01:14 EST Port Huron / Blue Water Bridge downbound
25 Nov 2024 19:06 EST Straits of Mackinac eastbound
19 Nov 2024 22:08 EST Straits of Mackinac westbound
16 Nov 2024 18:20 EST Port Huron / Blue Water Bridge upbound
16 Nov 2024 12:28 EST Detroit River / Ambassador Bridge upbound
14 Nov 2024 08:02 EST Detroit River / Ambassador Bridge upbound
13 Nov 2024 23:25 EST Port Huron / Blue Water Bridge downbound
12 Nov 2024 10:03 EST Port Huron / Blue Water Bridge upbound
12 Nov 2024 02:20 EST Detroit River / Ambassador Bridge upbound
8 Nov 2024 11:38 EST Detroit River / Ambassador Bridge downbound
8 Nov 2024 04:16 EST Port Huron / Blue Water Bridge downbound
6 Nov 2024 21:30 EST Straits of Mackinac eastbound
October 2024 15 passages
Date Local time Chokepoint Direction
30 Oct 2024 21:07 EDT Straits of Mackinac westbound
27 Oct 2024 19:23 EDT Port Huron / Blue Water Bridge upbound
27 Oct 2024 13:00 EDT Detroit River / Ambassador Bridge upbound
25 Oct 2024 09:56 EDT Detroit River / Ambassador Bridge upbound
25 Oct 2024 01:53 EDT Port Huron / Blue Water Bridge downbound
23 Oct 2024 12:53 EDT Straits of Mackinac eastbound
16 Oct 2024 13:55 EDT Straits of Mackinac westbound
12 Oct 2024 13:12 EDT Port Huron / Blue Water Bridge upbound
12 Oct 2024 06:02 EDT Detroit River / Ambassador Bridge upbound
11 Oct 2024 02:11 EDT Detroit River / Ambassador Bridge downbound
10 Oct 2024 19:04 EDT Port Huron / Blue Water Bridge downbound
9 Oct 2024 15:30 EDT Straits of Mackinac eastbound
4 Oct 2024 12:16 EDT Straits of Mackinac westbound
2 Oct 2024 23:25 EDT Port Huron / Blue Water Bridge upbound
2 Oct 2024 18:09 EDT Detroit River / Ambassador Bridge upbound
September 2024 15 passages
Date Local time Chokepoint Direction
30 Sep 2024 05:32 EDT Detroit River / Ambassador Bridge upbound
29 Sep 2024 20:29 EDT Port Huron / Blue Water Bridge downbound
28 Sep 2024 13:59 EDT Straits of Mackinac eastbound
24 Sep 2024 04:18 EDT Straits of Mackinac westbound
22 Sep 2024 08:12 EDT Port Huron / Blue Water Bridge upbound
22 Sep 2024 01:53 EDT Detroit River / Ambassador Bridge upbound
19 Sep 2024 18:37 EDT Detroit River / Ambassador Bridge downbound
19 Sep 2024 13:03 EDT Port Huron / Blue Water Bridge downbound
18 Sep 2024 07:13 EDT Straits of Mackinac eastbound
12 Sep 2024 22:04 EDT Straits of Mackinac westbound
11 Sep 2024 07:21 EDT Port Huron / Blue Water Bridge upbound
11 Sep 2024 00:55 EDT Detroit River / Ambassador Bridge upbound
8 Sep 2024 14:23 EDT Detroit River / Ambassador Bridge upbound
8 Sep 2024 06:50 EDT Port Huron / Blue Water Bridge downbound
5 Sep 2024 07:13 EDT Straits of Mackinac eastbound
August 2024 20 passages
Date Local time Chokepoint Direction
29 Aug 2024 21:10 EDT Straits of Mackinac westbound
28 Aug 2024 15:39 EDT Port Huron / Blue Water Bridge upbound
28 Aug 2024 08:51 EDT Detroit River / Ambassador Bridge upbound
26 Aug 2024 18:18 EDT Detroit River / Ambassador Bridge downbound
26 Aug 2024 12:16 EDT Port Huron / Blue Water Bridge downbound
25 Aug 2024 08:37 EDT Straits of Mackinac eastbound
19 Aug 2024 17:35 EDT Straits of Mackinac westbound
18 Aug 2024 04:08 EDT Port Huron / Blue Water Bridge upbound
17 Aug 2024 22:08 EDT Detroit River / Ambassador Bridge upbound
15 Aug 2024 20:01 EDT Detroit River / Ambassador Bridge downbound
15 Aug 2024 13:48 EDT Port Huron / Blue Water Bridge downbound
13 Aug 2024 04:30 EDT Port Huron / Blue Water Bridge upbound
12 Aug 2024 22:09 EDT Detroit River / Ambassador Bridge upbound
11 Aug 2024 18:10 EDT Detroit River / Ambassador Bridge upbound
11 Aug 2024 11:40 EDT Port Huron / Blue Water Bridge downbound
10 Aug 2024 01:39 EDT Straits of Mackinac eastbound
5 Aug 2024 04:59 EDT Straits of Mackinac westbound
3 Aug 2024 09:19 EDT Port Huron / Blue Water Bridge upbound
1 Aug 2024 16:48 EDT Detroit River / Ambassador Bridge upbound
1 Aug 2024 10:25 EDT Port Huron / Blue Water Bridge downbound
July 2024 15 passages
Date Local time Chokepoint Direction
31 Jul 2024 04:25 EDT Straits of Mackinac eastbound
25 Jul 2024 14:02 EDT Straits of Mackinac westbound
24 Jul 2024 14:08 EDT Straits of Mackinac eastbound
21 Jul 2024 19:49 EDT Straits of Mackinac westbound
20 Jul 2024 17:06 EDT Straits of Mackinac eastbound
14 Jul 2024 11:03 EDT Straits of Mackinac westbound
13 Jul 2024 06:46 EDT Port Huron / Blue Water Bridge upbound
13 Jul 2024 00:58 EDT Detroit River / Ambassador Bridge upbound
10 Jul 2024 12:56 EDT Detroit River / Ambassador Bridge downbound
10 Jul 2024 07:30 EDT Port Huron / Blue Water Bridge downbound
9 Jul 2024 04:49 EDT Straits of Mackinac eastbound
6 Jul 2024 03:01 EDT Straits of Mackinac westbound
3 Jul 2024 17:44 EDT Soo Locks (St. Marys River) downbound
2 Jul 2024 02:03 CDT Superior Entry outbound
30 Jun 2024 21:51 CDT Duluth Ship Canal inbound
June 2024 17 passages
Date Local time Chokepoint Direction
29 Jun 2024 08:35 EDT Soo Locks (St. Marys River) upbound
26 Jun 2024 22:43 EDT Port Huron / Blue Water Bridge upbound
26 Jun 2024 15:43 EDT Detroit River / Ambassador Bridge upbound
23 Jun 2024 17:43 EDT Detroit River / Ambassador Bridge upbound
23 Jun 2024 11:25 EDT Port Huron / Blue Water Bridge downbound
21 Jun 2024 06:24 EDT Port Huron / Blue Water Bridge upbound
21 Jun 2024 00:34 EDT Detroit River / Ambassador Bridge upbound
18 Jun 2024 04:20 EDT Detroit River / Ambassador Bridge downbound
17 Jun 2024 19:42 EDT Port Huron / Blue Water Bridge downbound
16 Jun 2024 15:09 EDT Straits of Mackinac eastbound
11 Jun 2024 13:50 EDT Straits of Mackinac westbound
10 Jun 2024 13:31 EDT Straits of Mackinac eastbound
7 Jun 2024 21:47 EDT Straits of Mackinac westbound
6 Jun 2024 07:26 EDT Straits of Mackinac eastbound
2 Jun 2024 09:25 EDT Straits of Mackinac westbound
1 Jun 2024 05:33 EDT Port Huron / Blue Water Bridge upbound
31 May 2024 23:25 EDT Detroit River / Ambassador Bridge upbound
May 2024 18 passages
Date Local time Chokepoint Direction
30 May 2024 08:22 EDT Detroit River / Ambassador Bridge downbound
30 May 2024 01:33 EDT Port Huron / Blue Water Bridge downbound
27 May 2024 02:06 EDT Straits of Mackinac eastbound
19 May 2024 22:44 EDT Straits of Mackinac westbound
17 May 2024 18:12 EDT Soo Locks (St. Marys River) downbound
16 May 2024 01:25 CDT Superior Entry outbound
14 May 2024 12:58 CDT Duluth Ship Canal inbound
13 May 2024 01:38 EDT Soo Locks (St. Marys River) upbound
10 May 2024 19:25 EDT Port Huron / Blue Water Bridge upbound
10 May 2024 11:03 EDT Detroit River / Ambassador Bridge upbound
9 May 2024 12:31 EDT Detroit River / Ambassador Bridge downbound
9 May 2024 04:31 EDT Port Huron / Blue Water Bridge downbound
5 May 2024 11:23 EDT Port Huron / Blue Water Bridge upbound
5 May 2024 04:31 EDT Detroit River / Ambassador Bridge upbound
3 May 2024 19:33 EDT Detroit River / Ambassador Bridge downbound
3 May 2024 13:34 EDT Port Huron / Blue Water Bridge downbound
2 May 2024 02:06 EDT Port Huron / Blue Water Bridge upbound
1 May 2024 20:38 EDT Detroit River / Ambassador Bridge upbound
April 2024 5 passages
Date Local time Chokepoint Direction
30 Apr 2024 13:25 EDT Detroit River / Ambassador Bridge downbound
30 Apr 2024 06:23 EDT Port Huron / Blue Water Bridge downbound
28 Apr 2024 13:27 EDT Straits of Mackinac eastbound
22 Apr 2024 09:18 EDT Straits of Mackinac westbound
21 Apr 2024 09:41 EDT Straits of Mackinac eastbound