Chittagong Dry Dock Ltd to Build Six Offshore Patrol Vessels for Bangladesh Navy
Chittagong Dry Dock Limited (CDDL) is in the process of building six Offshore Patrol Vessels (OPVs) for the Bangladesh Navy (BN), the company announced.
The construction of the vessels will be conducted in joint collaboration with a reputed foreign shipbuilding company and CDDL has issued Expression of Interest (EOI) for the collaboration.
According to the EOI, the design of the offered vessel should be either of proven design, based on a proven design or based on CFD analysis. The EOI also stipulates that the vessels shall be constructed at a local shipyard in Bangladesh.
The vessels should have a minimum length of 85 meters, a maximum breadth of around 14 meters, and a full load displacement of around 2000 tonnes.
The OPVs should have a maximum speed of at least 20 knots, an economical speed of at least 12 knots, a range of not less than 4000 NM at the economical speed, and an endurance of 30 days. They should be able to carry out operations at sea states up to 6 and withstand up to sea state 8.
The ships are to be propelled by two or more marine diesel engines connected to two shafts and controllable-pitch propeller (CPP) systems through reduction gearboxes in order to produce the desired speed. The propulsion system shall have automation and be controlled locally from the engine room and remotely from Machinery Control Room and Bridge.
The vessels are to be armed with one 30 mm automatic gun integrated with a fire control system (FCS) and two 12.7 mm manual gun on either side of the deck.
The OPVs should be equipped with a landing deck that can embark an 11-tonne helicopter. The vessels should carry two RHIB/Rescue boat with 8-16 men passenger capacity and one inflatable boat with 6 men passenger capacity both designed as per Navy standardized specifications. The vessel shall be also able to carry two mission-oriented containers each around 20TEU and weigh around 9 tons.
The ships should be able to carry a crew complement of 50, which includes officers (male and female), UT officers and sailors (both male and female). However, bunk/accommodations are to be catered for 90 men.
The primary role of the new Offshore Patrol Vessels (OPVs) are as follows:
• To provide a constant presence in the maritime area for surveillance.
• To perform constabulary duties like policing, patrolling, anti-smuggling, etc. in the country’s Exclusive Economic Zone (EEZ).
• To carry out fishery protection operations in the coastal areas.
• To protect offshore resources in EEZ.
The secondary roles include humanitarian assistance and disaster relief (HADR) and search and rescue (SAR) operations in EEZ.