Yes France's boomers cannot destroy the earth a hundred times over as America's can. They can only destroy the earth a few times over. Which to me is a difference without a distinction. Don
http://www.cdi.org/issues/nukef&f/database/frnukes.html
Sea-Based Strategic Weapons
L'Inflexible (SNLE M4) SSBN
Like U.S. and British SSBNs, the French have two rotating crews for each of their missile boats, which they call Rouge (red) and Bleu (blue). The submarines usually spend two months on patrol, then return to Brest to exchange crews and perform maintenance before heading back out to sea. French policy has been to maintain three SSBNs ready at all times, with two at-sea on patrol. This was difficult with the early M-1 SLBMs and M-2 SLBMs, which had to patrol off Norway's north coast to reach inland targets in Russia. The M-4 has cut down dramatically on transit time to patrol areas, which because of the greater range can include the western Atlantic. With M-4 missiles, the SSBNs can even reach some targets in Russia from dockside in France. Each SSBN carries several predetermined "target dossiers" on magnetic disks. The entire complement of 16 M-4 missiles can be fired in three to four minutes.
Unlike the British, who developed a sea-based deterrent with significant U.S. aid, the French did it largely on their own. While there was much U.S. sharing of nuclear design and test data with the United Kingdom, including the outright sale of SLBMs, there was little such cooperation with the French. In the spirit of Charles de Gaulle's independent force de frappe, and its later incarnation, the force de dissuasion, the French embarked on constructing their own nuclear triad. Little American aid was forthcoming during initial development, though there was some U.S. nuclear aid after 1972, after the French had developed their first generation of weapons. French SSBNs and SLBMs consequently have lagged at least a generation behind those in the U.S. arsenal. Today the United States is sharing testing and simulation data with the French to help them maintain their arsenal under the Comprehensive Test Ban Treaty.
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Le Triomphant SSBN (SNLE-NG)
The M-45 is an upgraded SLBM that will be deployed on the new Le Triomphant SSBNs. Compared to its predecessor, the M-4, the M-45 has upgraded electronics, re-entry vehicle, and warhead. The reentry vehicle is coated with a new material and has a precisely designed shape, a high reentry speed, and is accompanied by advanced penetration aids to defeat ABM defenses. The new TN-75 warhead is miniaturized and hardened against EMP effects. The TN-75 warhead has been described as "almost invisible" due to its stealth characteristics. Talk of ABM defenses and the U.S. Strategic Defense Initiative in the 1980s spurred development of a design that would be resistant to such measures. As Chirac stated, the French nuclear tests at Muroroa Atoll in 1995-6 in part stemmed from the need to test this new warhead design. Deployment of the M-45 is expected to extend until 2010-15, when a follow-on M-5 SLBM will be deployed in its place.
The Le Triomphants will initially use the M-45 SLBM with TN-75 warhead, but are planned to use a new missile, the M-51, which is under development. The proposed M-51 SLBM is a very long-term project; backfitting of the Le Triomphant class to carry the proposed M-51 is scheduled to begin in 2010. Four boatloads of M-51s were originally to be ordered but this number will likely be reduced to three to rotate among the four planned submarines. In addition to torpedoes for self-defense, the Le Triomphants also carry an unknown number of SM-39 Exocet anti-ship missiles.
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M-4 SLBM
A primary goal of the M-4 was defeating the upgraded Soviet ABM system. To this end, the TN-70/-71 warheads were "extremely hardened" to resist EMP effects from nearby nuclear blasts, and were miniaturized. With U.S. aid, the French were able to space (using explosive charges to propel the warheads away from the central missile bus) the incoming warheads so that a Soviet ABM nuclear blast would only destroy one of the missile's six warheads. Ninety-six of the earlier TN-70 warheads were manufactured (missiles carrying the TN-70 are sometimes referred to as the M-4A). An improved variant, the TN-71, has a lower radar cross section and is reported as more survivable against ABM defenses -- 288 warheads were manufactured (missiles with the TN-71 are sometimes called the M-4B).
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