Your naval partner
Major overhauls for
the French Navy
And you? Who will
YOUR NAVAL PARTNER MAJOR OVERHAULS FOR THE FRENCH NAVY
A successful and
For over four centuries, DCNS made its mark as a major company
for the maintenance and repair of ships, conventional and nuclear
powered submarines. Focus on this activity which requires cutting
Aircraft carrier Charles de Gaulle: system and the propulsion system.
an intermediate refit conducted on The majority of operations were carried out on the platform. The propultime and within budget.
The intermediate refit of the aircraft sion system was inspected, overhauled
carrier Charles de Gaulle started and tested. The stearing gear, the
on 24th January 2013 and was to last stabilisation and the COGIT system
si x months. The objective of th is have been inspected as well. But more
t h a n a m a i nt en a nce
operation was to modoperation, this refit has
ernise and to restore 20% of the works
permitted to prepare
the ship’s capability for
aim at preparing
the ship to integrate the
the next four years. It
latest technologies. 20%
took two years to pre- the upcoming
of the works aim at prepare and organise this overhaul!
paring the aircraft cartechnical stop involvi n g 1 m i l l i o n w o r k i n g h o u r s , rier for the upcoming major overhaul
250 dedicated DCNS employees and in 2017.
200 subcontractors. Besides the technical and human challenge, the main Key tasks
point of this programme was ensure Painting and stripping (19,000-m 2
the success of the operations in a very hull, 5,000-m 2 flight deck (20 tons of
short time. DCNS had to cope with paint).
budget restrictions. To cut costs down, Tests, inspection and preventive
a meticulous preparation has proved maintenance exchange of the nuclear
necessary involving 60 partnerships boiler room.
with highly competitive companies Overhaul, replacement and refit of
and the contribution of 500 male and avia equipment.
female crew members. The 5,000 tasks Inspection of the propulsion system
of this intermediate refit cover three Flight deck cutting to replace the oil
categories : the platform, the combat tank.
Preparation works for the next major
new technology for shaft line coupling;
new system for the ship stabilisation;
on board installation of 35 km of
cables to anticipate the networks (in
service in 2017 during the next refit).
As the case for the formula 1 racing
cars stopping at the stand, a nuclear
attack submarine should remain
stopped for a period as short as
possible. These last few years the
implementation of rigorous working
methods and the quality of the work
performed have led to a considerable
reduction in the time spent at the
dock, in spite of the increasing
complexity of the task. Today,
submarines sail on average 220 days
IA M51 programme
THE IA M51 PROGRAMME CONSISTS OF MODERNISING THE 3 FRENCH NAVY’S SSBN TO RECOVER
THEIR EFFICIENCY AND OPERATE THE NEW BALLISTIC NUCLEAR MISSILE, THE M51. THE VIGILANT
WAS THE FIRST TO BE MODERNISED, FOCUS ON THIS MAJOR INDUSTRIAL PROGRAMME.
Scope of work
After a couple of months spent in the French secret
naval base to carry out preparation works, the SSBN got
to the Brest naval base by the end of 2011 to be overhauled. More than twenty months to carry out works of
overhaul and modernisation and/or adaptation :
combatmanagementsystemanddeterringweapons management system modernisation (CESAD);
Preparation phase and infrastructure
The upstream preparation works and the infrastructures adaptation are parts of a global industrial
organisation implemented by DCNS. This is a key
aspect to finish the works as scheduled.
A successful and ambitious programme
This first adaptation on Le Vigilant will allow DCNS
to optimise the next operation. The two SSBNs,
Le Triomphant and Le Téméraire, modernisation
works are expected to be finished by 2018.
M51, a new ballistic nuclear missiles
The M51 missile is the latest technology to replace
the M45 SLBM (sea-ground-ballistic missile) of newgeneration SSBNs. It’s a three-stage missile designed
to be launched by SSBNs.
40-42, rue du Docteur Finlay
F-75732 Paris Cedex 15
+33 (0)1 40 59 50 00
– Photo credits: DCNS/J-P. Mesguen, G. Uféras Corporate Communications – September 2014 – Non contractual document – Production:
Ra^hp, French Navy, ECPAD, Raphaël Demaret. Printed on 100% recycled paper Oxygen Pure Silk, FSC certified.
DCNS believes that the sea is this planet’s future. DCNS is inventing high-tech
solutions to sustainably secure and develop its potential. DCNS is a world
leader in naval defence and an innovative player in energy. The Group’s
success as an advanced technology company with global reach is built on
meeting customer needs by deploying exceptional know-how and unique
industrial resources. DCNS designs, builds and supports submarines and
surface combatants. It also proposes services for naval shipyards and bases.
Last but not least, DCNS offers a range of solutions in civil nuclear
engineering and marine renewable energy. DCNS is committed to sustainable
development and was one of the first defence contractors to win Group-wide
certification to ISO 14001.