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Open data · every figure carries its source

Largest in this registry
#71,442
of 84,014 with a recorded tonnage
Largest unclassified
#40,054
of 49,696 of this type with a recorded tonnage
Largest in its fleet
#34
of 46 in this fleet with a recorded tonnage
In brief
HMS Brocklesby is a Hunt-class mine countermeasures vessel of the British Royal Navy, her primary purpose is to find and neutralise sea mines using a combination of; Sonar, Mine Clearance Divers and the Seafox remotely operated vehicle (ROV). The class are the largest warships of glass-reinforced plastic (GRP) construction, which gives the vessels a low magnetic signature. In addition to her mine countermeasures activities, Brocklesby acts as an offshore patrol vessel, undertaking coastal patrol and fisheries protection duties.
From 2018 to 2021 Brocklesby was deployed in Bahrain at HMS Jufair as part of four minehunters of 9th Mine Countermeasures Squadron supported by a Royal Fleet Auxiliary Bay-class landing ship on Operation Kipion.
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 625 gross tons, HMS Brocklesby is the 71,442nd 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 9.6 times smaller than 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 40,054th by tonnage — larger than 19% 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 Brocklesby is the 1,447th 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 1,089 are larger by tonnage.
HMS Brocklesby was built in 1983, making it 43 years old. It is one of 1,578 hulls in this registry delivered that year, a cohort whose median tonnage is 3,112 GT; within it this ship is the 1,243rd largest. Across the whole of the 1980s the registry holds 13,213 vessels, median 3,004 GT. The median build year across the entire registry is 1995.
The registry attributes 23 vessels to VT Group, with a median tonnage of 625 GT, delivered between 1981 and 2007. See the rest of that yard’s output.
At 60.0 m overall, HMS Brocklesby is 55.0 m shorter than the 115.0 m median for vessels this registry holds no type classification for on record, with a beam of 9.8 m and a draft of 2.2 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 4906616 this registry holds 26 other vessels, whose median build year is 1983 and which range from 1945 to 2008. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1983.
Its IMO number, 4906616, carries its own check digit. The first six digits are weighted seven down to two and summed — 4×7 + 9×6 + 0×5 + 6×4 + 6×3 + 1×2 = 126 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.
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 Ledbury | 4906587 | United Kingdom | 1981 | — |
| HMS Cattistock | 4906599 | United Kingdom | 1982 | 625 |
| HMS Hurworth | 8401509 | United Kingdom | 1986 | 384 |
| HMS Atherstone | 4906666 | — | 1987 | 625 |
| HMS Quorn | 4906692 | United Kingdom | 1989 | — |
| HMS Middleton | 4906654 | United Kingdom | 2008 | — |
Same fleet
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryQuoted from HMS Brocklesby (M33) on English Wikipedia, reused under CC BY-SA 4.0.
PhotographBy Brian Burnell, reused under CC BY-SA 3.0.
| 1973 |
| 624 |