105 M-Class Offshore Patrol Vessels (OPVs), India
The first of a series of six 105m new-generation offshore patrol vessels (OPVs) will be delivered to the Indian Coast Guard in October 2015. The vessels are designed and being built by Goa Shipyard.
The offshore patrol vessels are intended for coastguard missions such as search-and-rescue, pollution control, policing and patrolling in the Indian exclusive economic zone (EEZ), and external firefighting. The OPVs can also be used for ocean surveillance and monitoring sea lanes of communication.
Construction of 105 M offshore patrol vessels
Goa Shipyard was awarded a contract, worth approximately $400m, to build a series of six offshore patrol vessels for the Indian Coast Guard in May 2012.
The keel for the first OPV named as ICGS Samarth was laid in September 2012. The vessel was launched in November 2014 and is scheduled to be delivered in October 2015. The keel for the second offshore patrol vessel was laid in January 2013.
The keel laying ceremony for the third OPV in the series was held in October 2013 and the vessel was launched in April 2015. Construction on the fourth and fifth vessels began in January 2014 and July 2014 respectively.
The keel for the sixth and final OPV in the series was laid in June 2015. All the six vessels are scheduled to be delivered to the Indian Coast Guard by 2017.
Design, features and capacities of the Indian OPV
The 105 M-Class offshore patrol vessel features a steel hull and offers improved seakeeping performance as well as fuel efficiency. It facilitates comfortable seating for 18 officers and 108 sailors.
The vessel has an overall length of 105m, breadth of 12.9m, depth (MLD) of 6m, mean draught of 3.6m, and a propeller draught of 4.5m. It has a displacement of 2,400t and can carry 280t of fuel oil, 120t of fresh water, 10t of lubricating oil and 15t of AVCAT fuel.
The vessel can carry four boats for boarding operations and is equipped with two electro-hydraulic cranes to handle the boats. Its aviation facilities, including helicopter deck, hangar, helo traversing gear and helo landing grid, support the embarkation and operation of an advanced light helicopter.
The Damen Stan type 4207 patrol vessels, designed by Damen Shipyard Group, are operated by a number of navies and coastguards worldwide.
The deck equipment include two anchor capstans, one mooring capstan and two 1,440kg high holding power (HHP) anchors with chain. The vessel is also installed with electrical equipment and a firefighting system.
Bridge and navigation systems of the 105m-class
The OPV is operated from a contemporary navigational integrated bridge system, which consists of a bridge watch navigational call up system, CCTV system, state-of-the-art navigation and communication systems, differential global positioning system (DGPS), autopilot, echo-sounder, speed log, and an electronic chart display and information system.
It is also equipped with a radar, a magnetic compass and a gyro compass to provide navigational information. A four-lane simulator is fitted for small arms training.
The 105 M-class offshore patrol vessels are armed with one 30mm gun and two 12.7mm guns. A fire-control system is fitted to assist the crew in engaging targets.
Propulsion and performance
The OPV is powered by two 20 PA6B STC diesel engines rated at 7,792kW each. The engine has two controllable pitch propellers to provide high-efficiency under varying load conditions and uses a reduction gearbox to increase the output torque.
The power-plant provides a speed of roughly 24k and allows the vessel to endure seaborne for 20 days. The vessel offers ranges up to 6,500nm at a speed of 12k.