Story 3
Big picture thinking
EPISODE 1
The secret of eternal youth

Warships are built to last. The average lifespan of a nuclear submarine, for example, is 30 years. But over its lifetime, a submarine it will undergo several overhauls to ensure that it remains at the cutting edge of naval technology. We take you inside the recent overhaul campaign of France’s Le Triomphant-class submarines to show you how our Eco Design thinking makes vessels ready for maintenance and overhauls from day one.

1980s Designed for midlife refit
Le Triomphant’s ballistic missile launch tubes were designed from the start to accommodate the future M51 missiles and then “downsized” for use with M45.

Hull design incorporates “soft patches” that enable access and removal of internal systems without compromising hull integrity.
©DCNS

1980s Designed for midlife refit
Le Triomphant’s ballistic missile launch tubes were designed from the start to accommodate the future M51 missiles and then “downsized” for use with M45.

Hull design incorporates “soft patches” that enable access and removal of internal systems without compromising hull integrity.
©DCNS

1997 Commissioning
Le Triomphant commissioned. One of four ballistic missile submarine (SSBN) in France’s Strategic Oceanic Force (FOST)
©Marine nationale

2003-1st Period of Restricted Availability
First period of restricted availability (PRA) for maintenance . PRAs occur on average once every 10 years. Between PRAs, French SSBNs undergo on average two short maintenance periods or technical shutdowns annually.
©DCNS

2013 refit begins
The 30-month midlife refit of Le Triomphant, which also includes the second PRA, begins. It starts with three months at Ile Longue followed by 20 months in dry-dock #8 of DCNS’s shipyard in Brest and then back to Ile Longue. Scheduled absence has no impact on the sea presence of the FOST.
©Marine nationale - A.Monot

April 2015
Le Triomphant returns to home base at l’île Longue.
©DCNS

2016
Refit begins of the last Le Triomphant-class SSBN (Le Téméraire).
©DCNS

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