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Patrol & mine warfare vessels1982–PresentProfile in progress
Offshore patrol vessel
Castle-class patrol vessel is a offshore patrol vessel. It was built by Hall, Russell & Company. Reported operators include Royal Navy (retired) Bangladesh Navy.
United KingdomHall, Russell & Company
Royal Navy (retired) Bangladesh Navy
Island class
River class
1979–1981
1982–Present
6
2
Offshore patrol vessel
1,570 tons full load
246 ft (75 m) (overall)
37 ft 9 in (11.51 m)
11 ft 3 in (3.43 m)
2 shafts, 2 Paxman diesels, 2,820 hp (2,100 kW)
20 knots (37 km/h)
10,000 nautical miles (19,000 km) at 10 knots (19 km/h)
40
Type 1006 radar Simrad RU sidescan sonar (Bangladesh Navy installed Type 360 Radar as the main radar)
Royal Navy: 1 × Bofors 40 mm gun Mark III, replaced by 1 × 30 mm gun Bangladesh Navy: 1 x 76 mm (3.0 in) main gun 4 × C-704 AShM Small caliber guns or autocannons
Flight deck capable of supporting a Sea King helicopter
The Castle class was a class of British offshore patrol vessels of the Royal Navy . Two ships were constructed and after nearly 30 years service were sold to the Bangladesh Navy in 2010. The Bangladesh Navy upgraded these with more armaments including C-704 anti-ship missiles and sensors. These ships are now reclassified as corvettes by the Bangladesh Navy.
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 29 Sept 2026 | 75 m | Wikipedia contributors | superseded |
| 29 Sept 2026 | 75 m | Wikipedia contributors | approved |
Castle-class patrol vessel equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
Bangladesh