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OCEAN EAGLE 43 Trimaran Maritime Surveillance Vessel

The first Ocean Eagle 43 trimaran ocean patrol vessel ordered by the Mozambican government was launched in January 2015.

January 2015

Maximum Draught

Range at 18k.

The first Ocean Eagle 43 trimaran ocean patrol vessel ordered by the Mozambican government was launched in January 2015. The vessel is built by French shipyard Construction Mecanique de Normandie (CMN) to meet the naval operational needs of marines and to support special operations forces.

The vessel is intended for sea policing, surveillance of exclusive economic and fishing zones, search and rescue (SAR), safety and State action at sea, protection of vulnerable vessels and offshore installations, monitoring of marine environment, escort operations, counter speedboats, asymmetric threats and the boarding of terrorists. It is also used for combating illicit trafficking, smuggling, illegal immigration, terrorism and piracy at sea.

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Its modular design allows it to be configured for special operations support, side scan sonar operation, coastline surveying and coastal oceanography.

Its mine hunting variant, Ocean Eagle 43 MH was unveiled during the 24th EURONAVAL International Naval Defence and Maritime Exhibition and Conference held in October 2014 in Paris, France.

Ocean Eagle 43 construction

CMN finalised a contract with the Mozambican Government for the construction of three Ocean Eagle 43 trimaran ocean patrol vessels in September 2013.

The vessel is designed by NIGEL IRENS DESIGN, while structural building for all the three vessels was carried out by H2X under a contract signed with CMN in December 2013. Participants involved in the Ocean Eagle 43 programme also include Prezioso Linjebygg, ProLarge, and SeaTeam Aviation.

H2X rolled out the first Ocean Eagle 43’s central hull in July 2014 and delivered it to CMN shipyard in Cherbourg in September 2014. The second and third hulls were delivered in December 2014 and February 2015 respectively.

Design and features of the ocean patrol vessel

The Ocean Eagle 43 features versatile design and multi-hull structure comprised of a very slender main hull with two small floats. It is classified by Bureau Veritas classification society. Its hull and superstructures are made from lightweight composite materials such as epoxy, glass and carbon.

The vessel has an overall length of 43.6m, overall beam of 15.7m and maximum draught of 1.6m. It weighs 75t and can accommodate a crew of 13 personnel. It is equipped with a launch pad to operate fixed- or rotary-wing unmanned aerial vehicles (UAVs).

It is also fitted with a stern launching ramp to deploy a 7m outboard rigid-hulled inflatable boat (RHIB) for the shipment of goods, policing intervention, and other special naval operations.

Mission systems

Typical mission systems aboard the maritime surveillance vessel include electro-optical observation system, radar sensors, radio direction finder, command and control system, air-sea radio transmission of satellite data and an integrated navigation system.

Armament of Ocean Eagle 43 patrol vessel

The Ocean Eagle 43 is armed with one 20mm remotely-controlled gun turret and two 12.7mm side guns for self-defence.

The vessel runs on four 500hp diesel engines driving two controllable pitch propellers. It also incorporates three generating sets. Its carries up to 21m³ of fuel and 2m³ of fresh water.

Performance of the ocean patrol trimaran

The Ocean Eagle 43 maritime surveillance vessel can reach maximum speeds up to 30k. It has a range of 3,000nmi at a speed of 18k and 5,000nmi at 12k.

Its trimaran structure provides improved fuel economy, high reliability and extended endurance. It also offers increased comfort under difficult sea conditions.

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Angolan Navy receives Ocean Eagle trimaran patrol boat from French CMN

The ocean eagle 43 patrol vessel features an innovative trimaran design ideal for shallow waters..

The Angolan Navy has taken delivery of the first of three Ocean Eagle trimaran patrol boats from French shipbuilder CMN (Construction Mecanique de Normandie).

CMN handed over the vessel on Saturday, November 19, in a ceremony that took place in Toulon.

The 43.6 meters long and 15.2 meters wide trimaran-type patrol boat is designed by Nigel Irens Design, and made of composite materials at iXblue shipyard in La Ciotat instead of CMN facility in Cherbourg, because the latter no longer works on these types of materials.

The first three units of the Ocean Eagle type vessel was assembled in La Ciotat, and refitted with armaments at the Cotentin facility before being supplied in 2016 to Mozambique.

The Ocean Eagle trimaran ocean patrol vessel is intended to meet maritime surveillance needs of government organisations and research agencies.

The Angolan Navy which is tasked with protecting Angola’s 1,600 km long coastline will use the Ocean Eagle 43 vessel for search and rescue, sea policing, surveillance of exclusive economic and fishing zones, patrol, state action and safety at sea, protection of vulnerable vessels and offshore installations, as well as escort, anti-piracy, and marine environment monitoring.

The vessel can also be deployed to fight against trafficking, smuggling and illegal immigration, and to counter speedboats, asymmetric threats, and the boarding of terrorists.

The patrol boat has a top speed of 30 knots and a range of 3,000 miles at 20 knots. It is crewed by seven personnel and can accommodate another eight people.

The Ocean Eagle 43 patrol boat can be armed with either a 20 or 30 mm cannon above the bridge and two 12.7 mm machine guns at the stern.

Angola already operates patrol boats from CMN, including HSI 32 high-speed patrol craft.

Angolan Navy bought the high-speed patrol boat under a September 2016 €495 million deal with UAE-based shipbuilder Privinvest which saw the company establishing a shipyard in Angola as well as supply several naval vessels including three HSI 32 patrol craft, a Vigilante-400 long range offshore patrol vessel and a Vigilante-400 short range patrol vessel from France. The HSI 32 boats were delivered in 2019.

Mozambique is also another user of CMN vessel which operates three Ocean Eagle 43 trimaran patrol boats , three HSI 32 interceptors, and 18 fishing vessels from Constructions Mecaniques de Normandie (CMN) acquired in a 200 million euro deal over two years.

Insurgents  sunk  a French-made HSI32 High-Speed Interceptor boat during the fight for Mocímboa da Praia in August.

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Ocean Eagle 43: a strikingly innovative sea going patrol vessel

The Ocean Eagle story began in 2012 when ProLarge , a company specialised in the design and operation of sea-based projects (www.prolarge.fr), and SeaTeam Aviation, an air-marine services company, proposed a joint venture to CMN. Its goal was to produce a fast, light but reliable patrol trimaran using innovations developed for ocean racing, a field in which many French sailors had excelled. Strongly linked by their common trust and professionalism, the three companies were soon joined by the naval architect Nigel Irens, father of the multi-hulls Brigitte Bardot 1 and Ilan Voyager .

This Dream Team then started to develop an operational tool inspired by ocean-going racing vessels, able to fulfill the present ever increasing need for sovereign sea-space surveillance.

Indeed, the world’s oceans are at the heart of modern economy. More than 90% of world trade – the growth trend of which is doubling every 10 years – is transported by sea. Furthermore, the marine environment offers the fishing, energy, mineral and biological resources that a country can no longer afford or wish to ignore.

At the same time, seas are becoming more dangerous and threats on freedom of trade and State sovereignty are constantly increasing. Due to the lack of financial resources, many governments are unable to find satisfactory answers to this environment, which weakens them while the need for action at sea is becoming more acute.

New solutions were needed, in particular, new types of vessels, corresponding to countries requirements in a financially tight context. Bearing this in mind, CMN, ProLarge, SeaTeam Aviati on and Nigel Irens Design pushed the concept of the OPV (Offshore Patrol Vessel) to its limits.

Their purpose was clear: to design and build a suitable tool for missions of sea patrol and control enforcement over large areas and for long periods of time, accessible to States deprived of the capacity to invest hundreds of millions in one vessel, indispensable as it may be.

Nowadays, a Navy must indeed be able to carry out multiple missions, many of them low intensity ones : fishery surveillance, security of critical trade lines, search and rescue, prevention of asymmetrical risk, policing of illegal immigration, naval training back-up, medical assistance to island and coastal inhabitants, public service and inter-island, marine environment and protected areas monitoring , security and support for scientific surveys, air surveillance of maritime areas and many more.

These missions all have one common point : the need to coordinate air and sea vectors in order to fully assert a country’s sovereignty over its maritime domain. To do so, the gridding of the monitored area must be effective. Taking appropriate action at the proper level, implies combining air surveillance means with those of surface response while being able, if pertinent, to prepare heavier means implementation for more elaborate actions. Budgetary constraints require these missions to be carried out at the best price/performance ratio.

Thus, for CMN and its partners the principal aim of this multihull ocean patrol vessel was to obtain a much lower cost of ownership than the leading single-hull ship qualified for the same low intensity missions, and without concession on the operational performance requirements.

Dividing this cost ten times, meanwhile breaking with the “standard” conventions of traditionally oversized ships would have been a pipe dream without a whole series of technological breakthroughs. Substantial technical and cultural challenges needed to be overcome to achieve a low displacement vessel at relatively low cost, offering the long lines of an ocean racer, high action potential and a sustainable speed of 30 knots.

The solution took the streamlined shape of a Polynesian canoe stabilised by two lateral floats, but in order to achieve this, the issues of weight, structural strength and platform motion had to be resolved. Weight is the enemy of performance on a multihull vessel required to go fast and far, and the first necessity of a ship, sturdiness, does not always coincide with low weight. The balance between these two factors was the first problem which had to be solved in order to avoid over-sizing.

At the same time it was necessary to define a coherent concept of use for this type of vessel, to put this concept into line with operational requirements and then implement technological advances from the bold world of ocean racing to far more conservative naval applications. Thus, Ocean Eagle 43 was the result of elaborate hydrodynamic studies but also of the experience of Nigel Irens and the shipbuilding know-how of CMN. A highly pragmatic operational approach nurtured the capacity to adapt the configuration to the mission profile while keeping within a range of optimised performance with regard to the work to be carried out.

Another key objective was reliability and ease of maintenance. Surveillance missions do not require weapons and sensors calibrated for the “next world war”, but straightforward efficient systems which are easily serviced. A patrol vessel should most certainly not remain moored because of technical complications which cannot be managed by the operator. This demand for reliability led to a challenge which became an essential feature of the vessel; the possibility for a main propulsion engine to be changed in less than 24 hours.

The OE43 has in fact been the source of many cultural innovations and developments. The first was something quite unusual for a shipyard : CMN gave substance to the idea that added value could be better achieved through effective customer service rather than by piling on state of the art technology which was often quite space consuming.

Ocean Eagle 43 has replaced the age-old rule of “too much has never failed” with “what’s needed when it’s needed”. Hence the very modular ship design which enables it to fulfil such varied missions such as the fight against piracy, smuggling and terrorism, search and rescue, policing of fisheries, study and monitoring of the marine environment, special operations support, mine-sweeping and so on. The ability to carry out all these missions simultaneously could easily increase the overall vessel expenditure from 10 to 30; but actually, would this be cost effective?

Nowadays, the means of information processing and dissemination allow us to know precisely what we will or will not encounter at sea. Therefore, is it really necessary to continuously increase capability ? That of the OE43 is based on aeronautical technology, with dedicated equipment which can be adapted to each type of mission in the appropriate configuration.

Another aspect adopted from aeronautics is in the piloting technique; the OE43 crew must manage remaining fuel levels in relation to mass in the same way as an aircraft pilot. A balance point has to be maintained between speed, range and onboard capability.

The purpose of this patrol vessel requires certain state of the art equipment to be incorporated without it constituting a technological bind: fixed or rotary wing UAVs on a small launch pad, high performance RHIB, optical and radar sensors, air-sea radio transmission of satellite data (overcoming the sensitive issue of electromagnetic compatibility on a small craft) and a medium calibre remote controlled gun turret.

Finally, careful consideration had to be given to human factors, particularly psychological, and efforts were made to remain within the blueprint of what is statistically tolerable in terms of a ship’s motion.

With these formidable assets there are great ambitions for the OE43. It can bring concrete policy support for European cooperation by providing certain coastal countries with a turnkey ability for intervention at sea. The vessel was designed to support European programmes such as the MASE (Regional Maritime Security Programme) and the RMCB (Regional Maritime Capacity Building) which aim to develop regional means, to strengthen the role of governments and international organisations at sea and to promote a viable alternative to the privatisation of sea security. The extremely low consumption of the OE43 (about 2 tonnes of fuel per day at economy speed), means that user States can demonstrate their respect for the environment.

The OE43 will finally allow countries with navies to devote their high seas forces to military missions and avoid consuming their potential on surveillance tasks which, in many cases moreover, they do not have the means to ensure.

In addition to its principal task of maritime surveillance, the OE43 would also be able to perform certain scientific assignments of coastal and oceanic nature. Indeed, the stability of a multihull platform offers many advantages and numerous geographical and oceanic sensors are now available in a size and weight compatible with smaller ships.

Making available a workspace connected to a data acquisition system to a team of scientists and offering them a compact installation for carrying out their technical assignments will qualify the vessel for certain survey missions. These could include the operation of towed HF sonar for seabed reconnaissance, establishing seabed features through use of multi-beam echo sounding, towing and implementation of lightweight geophysical systems, operating ROV and/or AUV, drawing up CTD profiles (Conductivity Temperature Depth), deployment of oceanic drift sensors and profilers, observation of marine life, and so on.

It also seems obvious that the OE43 will be particularly appropriate for the support of certain low intensity scientific campaigns in so-called “zones of risk” such as the Indian Ocean and the Gulf of Guinea. Specialised oceanographic vessels capable of answering these needs exist but their high operating cost often makes their use prohibitive for “light” oceanic missions. Thus, numerous genuine requirements remain unanswered due to the lack of affordable solutions and this is where the Ocean Eagle 43 comes into its own; its very purpose is to answer, at the lowest possible cost, to all existing needs in terms of maritime surveillance and exploration.  The sale of the first three units to Mozambique highlights the launching of a wonderful industrial, maritime and human adventure.

Contacts CMN: 51, rue de la Bretonnière BP 539 50105 Cherbourg France Phone : +33 (0) 1 42 56 33 14

ProLarge / Seateam Aviation :  [email protected]  

Ocean Eagle 43 : A light, fast and durable sea patrol trimaran.

Ocean Eagle 43 – 43 metres long for only 75 tonnes – is a highly modular vessel of astonishing performance: a range of 3 000 nautical miles (5 556km) at 18 knots, 1 700 nautical miles (around 3 200km ) at 30 knots and the possibility to cover 5 000 nautical miles (nearly 9 300km) at economy speed. The OE43 is designed to carry a 300kg class UAV (e.g. the Schiebel Camcopter S-100), a 7 metre response RHIB, a team of commandos, radar and optical sensors and a telecommunications system. It is also has class IV ballistic protection on the wheelhouse, a 20 to 30 mm remote controlled cannon (configuration successfully tested by CMN on a 15 metre DV15 RWS interceptor), a satellite data link enabling transmission of image, video and tactical information to a land base or other vessels, a combat system interface (CMS) and an integrated navigation system (INS).

Four Key Competitive Advantages

An unprecedented ratio of “area patrolled + performance / cost per square nautical mile covered”: in the range of 25 000 square nautical miles in 5 days at 18 knots,

Straightforward maintenance,

A Low carbon footprint: 238 nautical miles at 15 knots with one tonne of fuel as opposed to 50 nautical miles at the same speed for a small ocean patroller of 50 metres length (450 tonne class),

High modularity.

Unprecedented performance / cost ratio

1   Brigitte Bardot , formerly Cable & Wireless Adventurer , held the world record for circumnavigation in 1998.

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CMN delivers Ocean Eagle patrol boat to Angola

French shipyard Constructions Mécaniques de Normandie (CMN) has delivered an Ocean Eagle 43 trimaran patrol boat to the Angolan Navy, some years after supplying three HSI 32 patrol craft as part of a 495 million euro deal.

CMN announced the delivery last week, noting that the Ocean Eagle 43 is an advanced patrol trimaran designed for long-range surveillance missions, including search and rescue, monitoring of the marine environment, surveillance of exclusive economic and fishing zones, and more.

Mer et Marine reports the vessel was handed over on 19 November in Toulon, where the vessel had concluded its sea trials. It was built at the iXblue shipyard in La Ciotat, to which CMN subcontracts the hull manufacture. The vessel was outfitted by iXblue, with the assistance of CMN.

The vessel is the first of three Ocean Eagles ordered by Angola, Mer et Marine reports. These are being acquired under a 495 million euro deal signed in 2016 with United Arab Emirates-based Privinvest, which at the time announced it would establish a shipyard in Angola and supply several naval vessels. Privinvest has facilities and shipyards in a number of countries including France (CMN), Germany (German Naval Yards Kiel) and the Middle East.

According to the Stockholm International Peace Research Institute (SIPRI), the 2016 deal included three HSI 32 patrol craft, which were delivered in 2019, and a long range offshore patrol vessel and a short range patrol vessel from France.

Angola has been expanding its small navy in recent times and in December 2015 ordered new equipment from Italy, including two patrol boats, radars and six helicopters (four AW139s and two A109Ks). The 7.3 million euro patrol boat order was placed with Whitehead Sistemi Subacquei, part of Finmeccanica (Leonardo).

Recent Angolan Navy deliveries include four Super Dvora Mk III patrol craft, which were ordered from Israel Aerospace Industries (IAI) in 2015 and delivered in 2016. A Cessna Citation jet was delivered in 2017 after being modified to maritime patrol configuration in Israel (this included fitment of a Seaspray radar). In 2018 Angola ordered three C295 aircraft from Spain – two will be specifically equipped for maritime surveillance and one for transport missions.

The Ocean Eagle is also in service with Mozambique, which in September 2013 signed a controversial 200 million euro deal with CMN to build three Ocean Eagle 43s, three HSI 32 interceptors and 24 fishing vessels over a two year period.

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• Video: CMN's Ocean Eagle 43 Trimaran Patrol Vessel Demonstrating Seakeeping in Sea State 5
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French shipyard  CMN has released a video showing its Ocean Eagle trimaran patrol vessel during sea trials in extreme weather conditions (Sea State 5). Thanks to its design, the  Ocean Eagle 43 demonstrates exceptional stability. CMN confirmed in September 2013 the signing of a major export contract with Mozambique . The contract includes the delivery of three Ocean Eagle 43 trimaran patrol vessels , three HSI 32 interceptors and eighteen fishing vessels for a total of twenty-four ships .

Image: CMN According to the French shipyard, The Ocean Eagle 43 is a revolutionary concept with exceptional performance designed to meet the needs of maritime surveillance and security . It is the result of a fruitful collaboration between CMN, naval architect Nigel Irens , ProLarge and SeaTeam Aviation companies, two small businesses specialized in logistics and operational projects at sea.

The Ocean Eagle 43 is a compact high-performance multifunction vessel that is suited to protect coastal areas, strategic offshore infrastructures. It can also conduct electronic warfare and intelligence missions through the use of 300 Kg class VTOL UAV (such as the SCHIEBEL S100 Camcopter).

The first Ocean Eagle 43 is set to be delivered to the Navy of Mozambique in early 2016 following training of the crew. While the vessels for Mozambique will be delivered without weapons, the Ocean Eagle 43 may be fitted with self-defense capabilities consisting in a 20 mm or 30 mm remote weapons station plus two 12.7 mm machine guns with 360° coverage. A ramp at the stern allows the rapid deployment and recovery of a 7 meters RHIB.

» 3,000 nautical miles autonomy at 20 knots;

» Top speed of 30 knots sustainable over a distance of 1,000 nautical miles;

» Limited crew of 7 sailors;

» Accommodations for 8 additional Special Forces;

Source: navyrecognition.com

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CMN unveils maritime surveillance trimaran concept

French shipbuilder Constructions Mécaniques de Normandie (CMN) has announced the construction of the 'Ocean Eagle 43' offshore patrol vessel (OPV) concept, a 43-metre maritime surveillance trimaran.

The modular vessel design is the outcome of collaboration between CMN and naval architect Nigel Irens, as well as the logistics and operational support companies ProLarge and SeaTeam Aviation.

According to industry sources, three OPVs will be built by CMN and are part of a larger multi-vessel order for the East African nation of Mozambique.

A multi-purpose vessel with a range of capabilities, the 'Ocean Eagle 43' concept is suitable for operations including the protection of coastal zones or strategic offshore infrastructure, patrol and response, or conducting electronic warfare or intelligence gathering via the launch and recovery of 300-kilogram aerial drones (UAVs).

The vessel has a maximum speed of 30 knots and a range of up to 3,000 nautical miles at a cruising speed of 18 knots. Able to operate with a reduced crew of seven, the vessel can accommodate up to eight military or special naval personnel.

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WATCH: New Ocean Eagle 43 Trimaran in Sea State 5

Share this article.

New video released by French shipyard CMN shows the Ocean Eagle 43 trimaran in heavy seas sea trials. The trials were carried off the coast of Cherbourg and in the Raz Blanchard with sea state 5 and the ship “demonstrates excellent seakeeping qualities,” the shipyard said.

Ocean Eagle 43 is an ocean patrol trimaran being built for the Mozambican government and launched in January 2015. The vessel is the first of three for Mozambique.

The class is known for its low fuel consumption at high speeds – 238 nautical miles at 15 knots with only 1 ton of fuel, according to CMN. Top speed is 30 knots.

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Ocean Eagle 43 Ocean Patrol

• 31 Jul, 2024 - 11:16
• Fast Attack Craft

The Sea proven OCEAN EAGLE 43 is an ocean patrol trimaran combining a very slender hull with two small floats designed to maintain the required stability. This combination reduces the fuel expenditure, increases speed and autonomy, while ensuring a good level of comfort even in moderate to rough sea conditions.

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Angolan Navy receives Ocean Eagle trimaran patrol boat from French CMN

FILE - The Ocean Eagle 43 patrol vessel features an innovative trimaran design ideal for shallow waters. [File photo: Military Africa]

• The Ocean Eagle 43 patrol vessel features an innovative trimaran design ideal for shallow waters.

The Angolan Navy has taken delivery of the first of three Ocean Eagle trimaran patrol boats from French shipbuilder CMN (Constructions Mécaniques de Normandie ).

CMN handed over the vessel on Saturday, November 19, in a ceremony that took place in Toulon.

The 43.6 meters long and 15.2 meters wide trimaran-type patrol boat is designed by Nigel Irens Design, and made of composite materials at iXblue shipyard in La Ciotat instead of CMN facility in Cherbourg, because the latter no longer works on these types of materials.

The first three units of the Ocean Eagle type vessel was assembled in La Ciotat, and refitted with armaments at the Cotentin facility before being supplied in 2016 to Mozambique.

The Ocean Eagle trimaran ocean patrol vessel is intended to meet maritime surveillance needs of government organisations and research agencies.

The Angolan Navy which is tasked with protecting Angola’s 1,600 km long coastline will use the Ocean Eagle 43 vessel for search and rescue, sea policing, surveillance of exclusive economic and fishing zones, patrol, state action and safety at sea, protection of vulnerable vessels and offshore installations, as well as escort, anti-piracy, and marine environment monitoring.

The vessel can also be deployed to fight against trafficking, smuggling and illegal immigration, and to counter speedboats, asymmetric threats, and the boarding of terrorists.

The patrol boat has a top speed of 30 knots and a range of 3,000 miles at 20 knots. It is crewed by seven personnel and can accommodate another eight people.

The Ocean Eagle 43 patrol boat can be armed with either a 20 or 30 mm cannon above the bridge and two 12.7 mm machine guns at the stern.

Angola already operates patrol boats from CMN, including HSI 32 high-speed patrol craft.

Angolan Navy bought the high-speed patrol boat under a September 2016 €495 million deal with UAE-based shipbuilder Privinvest which saw the company establishing a shipyard in Angola as well as supply several naval vessels including three HSI 32 patrol craft, a Vigilante-400 long range offshore patrol vessel and a Vigilante-400 short range patrol vessel from France. The HSI 32 boats were delivered in 2019.

Mozambique is also another user of CMN vessel which operates three Ocean Eagle 43 trimaran patrol boats, three HSI 32 interceptors, and 18 fishing vessels from Constructions Mecaniques de Normandie (CMN) acquired in a 200 million euro deal over two years.

Insurgents sunk a French-made HSI32 High-Speed Interceptor boat during the fight for Mocímboa da Praia in August.

By Patrick Kenyette

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