What kind of ship is CDN WARSHIP 431?

CDN WARSHIP 431 is a naval vessel sailing under the flag of Canada. The vessel has a gross tonnage of 7,449.

What sanctions and inspection records does Voydar hold for CDN WARSHIP 431?

Voydar has no matched sanctions record displayed for CDN WARSHIP 431 from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for CDN WARSHIP 431. Missing records do not establish whether the ship has been detained.

CDN WARSHIP 431

Naval vessel · Canada · AIS Class A

IMO4702515MMSI316014540Call signCGMBLast AIS position Oct 4, 2026, 19:43 UTC

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In short

CDN WARSHIP 431 (Naval vessel, Canada flag) was last seen on AIS on Oct 4, 2026, 19:43 UTC, under way at 9.9 kn, in the North Atlantic Ocean. Voydar has no more recent AIS position for this ship. Its current location cannot be established from this report. Its crew-entered AIS destination is HALIFAX NS; its reported draught is 6.2 m (voyage report via AISstream.io global terrestrial AIS, received Oct 4, 2026, 19:07 UTC).

Current voyage: from Halifax (departed Oct 4, 2026, 17:32 UTC) to HALIFAX NS

Vessel type: Naval vessel
Flag: Canada
Year built: —
Gross tonnage: 7,449
Size (length × beam): —
Registered owner: —

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Last reported position

received Oct 4, 2026, 19:43 UTC

Position: 44.4047° N, 63.1181° W
Area: North Atlantic Ocean
StatusWhat do AIS statuses mean?: Under way using engine
Speed: 9.9 kn
Course: 82°
Heading: 82°

44.4047° N, 63.1181° W

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Last 30 days: 3 port calls (Halifax).

Port calls are detected by Voydar from AIS (at least 30 minutes slow inside a harbour area); see Port calls below.

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Identity & particulars

Name: CDN WARSHIP 431
IMO numberWhat is an IMO number?: 4702515
MMSIWhat is an MMSI?: 316014540
Call signWhat is a call sign?: CGMB
Flag: Canada
Vessel type: Naval vessel
AIS ship type: Military ops
Gross tonnageGross tonnage vs deadweight: 7,449
Length overall: —
Beam: —
Year built: —

A tag next to a value names the register that supplied it (hover or tap it for the record and date). Values without a tag come from the ship's own AIS broadcasts or from Wikidata. Position and identity are derived live from AIS.

Ownership & management

Each line shows where the fact comes from. Links backed by an identifier point to the company page.

Operator: Royal Canadian Navy
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026
Builder: Irving Shipbuilding
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026

Timeline

Dated events for this ship from every source Voydar holds, newest first. Each line names its source; derived items say how they were derived.

Date	Event	Source
Oct 4, 2026, 17:32 UTC	Left HalifaxAIS-detected	Voydar port-call detector (AIS geofence)
Oct 4, 2026, 11:06 UTC	Arrived at HalifaxAIS-detected	Voydar port-call detector (AIS geofence)
Oct 3, 2026, 20:55 UTC	Left HalifaxAIS-detected	Voydar port-call detector (AIS geofence)
Oct 3, 2026, 19:40 UTC	Arrived at HalifaxAIS-detected	Voydar port-call detector (AIS geofence)
Oct 3, 2026, 12:17 UTC	Left HalifaxAIS-detected	Voydar port-call detector (AIS geofence)
Oct 3, 2026, 01:18 UTC	Arrived at HalifaxAIS-detected	Voydar port-call detector (AIS geofence)

Owner, operator and manager changes found by comparing yearly EU MRV reports are dated to the reporting year ("during 2025"), not to a day. Port calls here are the most recent only; the full lists are further down.

Port calls

Two kinds of evidence, kept apart: calls Voydar detected from the ship's AIS positions, and arrivals and departures published by port authorities and customs records.

Detected from AIS AIS-detected

Port	Arrived	Departed	Time in port
Halifax CAHAL	Oct 4, 2026, 11:06 UTC	Oct 4, 2026, 17:32 UTC	6 h 26 min
Halifax CAHAL	Oct 3, 2026, 19:40 UTC	Oct 3, 2026, 20:55 UTC	1 h 16 min
Halifax CAHAL	Oct 3, 2026, 01:18 UTC	Oct 3, 2026, 12:17 UTC	10 h 59 min

Detected by Voydar when the ship's AIS positions stayed slow inside a harbour area. Calls shorter than 30 minutes are not shown. Depends on AIS reception; detection started on June 8, 2026.

About CDN WARSHIP 431

HMCS Margaret Brooke (AOPV 431) is the second Harry DeWolf-class offshore patrol vessel for the Royal Canadian Navy (RCN). The class was derived from the Arctic Offshore Patrol Ship project as part of the National Shipbuilding Procurement Strategy and is primarily designed for the patrol and support of Canada's Arctic regions. Named after Sub-Lieutenant Margaret Brooke, an RCN nursing sister who tried to save another person during the sinking of the ferry SS Caribou during World War II. Margaret Brooke was ordered in 2011, laid down in 2016 and launched in 2019. The vessel began contractor sea trials in May 2021, and she was delivered to the Royal Canadian Navy for post-acceptance sea trials on 15 July 2021. The official naming ceremony for the ship was conducted on 29 May 2022 in conjunction with that for sister ship Max Bernays. The vessel was commissioned on 28 October 2022.

Summary from Wikipedia, licensed CC BY-SA.

Frequently asked questions

Where is CDN WARSHIP 431 now?: CDN WARSHIP 431 (Naval vessel, Canada flag) was last seen on AIS on Oct 4, 2026, 19:43 UTC, under way at 9.9 kn, in the North Atlantic Ocean. Voydar has no more recent AIS position for this ship. Its current location cannot be established from this report. The crew-entered destination was HALIFAX NS (voyage report via AISstream.io global terrestrial AIS, received Oct 4, 2026, 19:07 UTC). This report does not confirm the ship’s current route.
What kind of ship is CDN WARSHIP 431?: CDN WARSHIP 431 is a naval vessel sailing under the flag of Canada. The vessel has a gross tonnage of 7,449.
What sanctions and inspection records does Voydar hold for CDN WARSHIP 431?: Voydar has no matched sanctions record displayed for CDN WARSHIP 431 from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for CDN WARSHIP 431. Missing records do not establish whether the ship has been detained.

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