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Open data · every figure carries its source

Largest in this registry
#23,379
of 84,014 with a recorded tonnage
Largest unclassified
#13,066
of 49,696 of this type with a recorded tonnage
Largest in its fleet
#2
of 46 in this fleet with a recorded tonnage
In brief
HMS Bulwark is the second unit of the Albion-class assault ships originally built for the Royal Navy. She was one of the United Kingdom's two landing platform docks designed to put Royal Marines ashore by air and by sea. She was retired as of March 2025.
Although launched in 2001, delays caused the delivery date to be put back, and the ship entered service on 28 April 2005. Together with Albion, and other amphibious ships, she has provided a larger and more effective amphibious capability than the previous Fearless-class vessels. Between October 2011 and June 2015 she was the fleet flagship of the Royal Navy. She has been in extended upkeep since 2020. The ship is designed to send large numbers of troops and vehicles to shore as quickly as possible. Bulwark has supported a permanently embarked Royal Marines landing craft unit, 4 Assault Squadron Royal Marines. The rear of Bulwark opens and floods a compartment, allowing the boats inside to be launched. The 64-metre (210 ft) flight deck is able to take two Sea King HC4 or Merlin medium-lift helicopters and stow a third. The deck can also support two Chinook heavy-lift helicopters, one down the side of the flight deck and one at the rear of the flight deck. Although the Albion design does not have a hangar, the ship has sufficient equipment to support helicopter operations.
Vessel particulars
Every value is as recorded in the source. Blanks are values the source does not hold — none is estimated from a sister ship or a class average.
Identification
Construction
Measurements
In context
Every figure in this section is a count, a rank or a percentile over vessels actually held in this registry — not over the world fleet, which is larger. Nothing here is estimated.
At 24,471 gross tons, HMS Bulwark is the 23,379th largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT, so this hull is about 4.1 times the typical vessel on record here. The largest measures 499,167 GT.
Among the 58,086 vessels this registry holds no type classification for held here, it ranks 13,066th by tonnage — larger than 74% of that group. Their median tonnage is 5,358 GT, and the largest tenth begin at 54,309 GT. The flag most often flown by this group is Panama (5,698 ships). The yard that appears most often against it is HD Hyundai Mipo, with 615 hulls on record.
United Kingdom is the country of registry for 2,394 vessels in this directory, of which HMS Bulwark is the 276th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,835 ships), and the median vessel measures 2,515 GT. Browse every ship flagged United Kingdom.
Narrowing to both dimensions at once, this registry holds 1,835 vessels this registry holds no type classification for flying the United Kingdom flag, of which 122 are larger by tonnage.
HMS Bulwark was built in 2004, making it 22 years old. It is one of 1,485 hulls in this registry delivered that year, a cohort whose median tonnage is 17,188 GT; within it this ship is the 619th largest. Across the whole of the 2000s the registry holds 18,605 vessels, median 9,957 GT. The median build year across the entire registry is 1995.
The registry attributes 3 vessels to BAE Systems Marine, with a median tonnage of 24,471 GT, delivered between 2003 and 2004. See the rest of that yard’s output.
At 176.0 m overall, HMS Bulwark is 61.0 m longer than the 115.0 m median for vessels this registry holds no type classification for on record, with a beam of 28.9 m and a draft of 7.1 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9160607 this registry holds 61 other vessels, whose median build year is 1998 and which range from 1996 to 2004. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2004.
Its IMO number, 9160607, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 1×6 + 6×5 + 0×4 + 6×3 + 0×2 = 117 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.
Nearest by tonnage among vessels this registry holds no type classification for
| Ship | Built | Gross tonnage |
|---|---|---|
| Safmarine Cameroun | 2004 | 24,488 |
| Akij Glory | 1985 | 24,487 |
| Darya Rapti (ship, 2022) | 2022 | 24,472 |
| HMS Bulwark (this ship) | 2004 | 24,471 |
| Maersk Kaya | 2011 | 24,463 |
| Maersk Kate | 2010 | 24,463 |
Record
Events recorded against this vessel in the source, with the dates the source gives. An event with no date is listed last rather than assigned one.
Class
| Ship | IMO | Flag | Built | Gross tonnage |
|---|---|---|---|---|
| HMS Albion | 9160592 | — | 2003 | 24,471 |
Same fleet
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryQuoted from NDM Oiapoque on English Wikipedia, reused under CC BY-SA 4.0.
PhotographBy Hmfcalum, reused under CC BY-SA 3.0.
| Kirsten Maersk |
| 2010 |
| 24,463 |