Home' Defence Technology Review : DTR NOV 2015 Contents 27
DEFENCE TECHNOLOGY REVIEW | ISSUE 15 | NOV 2015
Design: OPV-2 1800 Sea Axe
Released in April 2015, the newly designed 2nd
Generation Offshore Patrol Vessel (OPV-2) features
Damen’s distinctive Sea Axe bow design that produc-
es very low resistance and reduces vertical accelera-
tion, thereby contributing to superior seakeeping. This
results in improved crew comfort, fuel efficiency and
higher sustained speeds in heavy seas.
Damen also has the option of offering the larger OPV-
2 2400 Sea Axe design, which has a 6,000nm range,
40-day endurance and an additional 30m2 of multi-use
- 1,800 tonnes
- 13.7m beam
- 25 knots
- 3 0 days endurance
Very high modularity and operational flexibility with a multi-mission bay
(MMB) under the flight deck that can be equipped with dedicated
mission modules/containers for missions such as counter-piracy, coun-
ter-narcotics operations, anti-mining warfare, counter-terrorism, SAR etc.
The MMB also houses a 9m RHIB that can be launched and recovered
over a dedicated slipway through the stern whilst the vessel is under-
way. This system has proven safe and effective on the Damen-built
Holland-class ocean patrol vessels of the Royal Netherlands Navy in
conditions up to Sea State 5.
The hangar of the OPV-2 1800 is capable of storing an MRH90 helicop-
ter and an unmanned aerial vehicle (UAV) such as the Boeing ScanEagle.
The hangar is designed so that the crew can deploy either the helicopter
or UAV without having to move either. Further hangar space is provided
for a workshop and spare parts storage for both aircraft types.
Status: More than 150 vessels of various sizes and types have been built to Damen’s Sea Axe bow design since 2006, including two
67m Arialah-class multi-purpose OPVs for the United Arab Emirates (UAE). These will be built at Damen’s Galati shipyard in Romania and
delivered to the UAE in 2017 for systems integration and final fit-out.
Design: OPV 90
Made available to the French Navy in 2011 where it
sails as L’Adroit, the Kership OPV 90 has successfully
participated in operations against piracy, terrorism
and trafficking in the Indian Ocean and Red Sea and
fisheries patrols and control of illegal immigration in
the Mediterranean Sea.
Shares some design origins with the successful
Gowind corvette family from DCNS.
- 14.3m beam
- 1,200 tonnes
- 24 knots
- 8,000nm at 12 knots
- 32 crew
An especially large flight deck for helicopters up to 10 tonnes and a
hangar nestled in under the high panoramic bridge that is apparently
intended for aircraft slightly smaller than the RAN’s MRH90. More than
enough deck space to launch and recover UAVs of various sizes, but only
enough hangar volume to house a small (5 tonne) helicopter and UAV
Twin stern slipways for launch/recovery of 9m RHIBs or unmanned sur-
face vessels. Space to accommodate 27 additional personnel if required.
Various gun-based weapon systems available, with foredeck structurally
able to integrate a 76mm naval gun mount.
Status: Based on the success of the French Navy’s operation of L’Adriot, the OPV 90 is understood to be the basis of designs and
specifications being drawn up by a number of countries for similar OPVs.
Design: OPV 75
DCNS promoted its OPV 75 at Pacific 2015, a
design developed by Kership, a joint-venture between
DCNS and French shipyard Piriou. The OPV 75 has
been designed to perform law enforcement operations
at sea with rapid intervention, high flexibility, long
endurance and good sea-keeping.
- 13.6m beam
- 1,500 tonnes
- 25 knots
- 4,000nm at 12 knots
- 32 crew
- 40mm Bofors main gun and
two 12.7mm heavy machine
With a large flight deck considering its modest length, the OPV 75 can
support helicopter (up to 10 tonnes) and UAV operations. There is no
helicopter hangar but enclosed storage is provided for two UAVs.
A mission bay under the flight deck can fit three 20ft ISO containers,
whilst a 9m RHIB is deployable via stern ramp. A 7m RHIB on a davit is
stowed on deck. Has space to accommodate an additional 26 personnel
The hull and superstructure are constructed of steel and aluminium
Status: A smaller version of the operational OPV 90, the OPV 75 is at the design concept stage and not yet under construction as far as
Design: OPV 1800
The OPV 1800 is representative of the size and ca-
pacities which Sea 1180 is expected to call for.
The 90m OPV 2400 could also be an option, with its
greater endurance (40 days) and range (6,000nm).
Damen is expected to team with a local shipyard to
enable local construction, which very much fits with its
proven business model of offshore builds for export
- 1,890 tonnes
- 13.7m beam
- 22 knots
- 5,000nm at 12 knots
- 3 0 days endurance
- 46 crew
Steel monohull from Damen’s modular OPV family with aft flight deck,
hangar and refuelling facilities to support helicopters of up to 11 tonnes
(MRH90). Two 9m rigid hull inflatable boats (RHIB) on davits to port/
starboard for boarding parties.
Fully operational in up to Sea State 6; survivable in Sea State 9 with
category 12 winds (Beaufort scale)
Has 190m2 of below-deck space – multi-role or dedicated – for
accommodation of passengers or embarked forces, storage of mission
equipment and packaged goods.
76mm gun main armament supported by two 20mm stabilised weapon
mounts are among available (upper end) weapon system fits.
Status: An evolution of proven, low-risk OPV designs which Damen has built for numerous customers, the strength of the OPV 1800 lies
in its versatility and modularity and excellent seakeeping credentials.
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