TRIOMPHANT CLASS SUBMARINES

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Togo issued a set of stamps and a miniature sheet in 2019 which shows us nuclear-powered submarines.

This stamp shows us one of the Triomphant class, all were built by Direction des Constructions Navales (DCNS). Cherbourg for the French Navy.
Displacement 12,640 surface, 14,335 submerged, dim. 138 x 12.50 x 10.60m. (draught)
Powered nuclear by K15 pressurized water reactors, 150 MW, (200.000 hp.), speed over 25 knots.
Test depth over 400 meter.
Armament 16 M45 or M51 missiles with TN 75 warheads, 4 533mm torpedo tubes for F17 torpedoes and Exocet SM39 anti-ship missiles, launchable when submerged.
Crew 15 officers and 96 sailors.

The class of four boots were completed 1997-2010 and are all in service in the French Navy.
The Triomphant class of ballistic missile submarines of the French Navy is the active lead boat class of four boats that entered service in 1997, 1999, 2004, and 2010. These four superseded the older Redoutable class, and they provide the ocean-based component (the Force océanique stratégique) of France's nuclear deterrent strike force, the Force de Frappe. Their home port is Île Longue, Roadstead of Brest, Western Brittany.

Design and construction
The first three boats are all armed with the French-produced and armed M45 intermediate-range missile, and the fourth vessel, TERRIBLE, has tested and is equipped with the more advanced M51 missile.[2] Each of the first three boats is to be retrofitted to the M51 missile standard, starting with VIGILANT in 2010, then TRIOMPHANT, and ending with TÉMÉRAIRE in 2018.

SNLE-NG
In French, these are called Sous-Marin Nucléaire Lanceur d'Engins de Nouvelle Génération (English: "Next Generation Device-Launching Nuclear Submarine"), abbreviated as SNLE-NG. They have replaced all of the Redoutable-class boats, with the last of those six boats being decommissioned in 2008. These submarines carry 16 submarine-launched ballistic missile launching tubes apiece.
This class reportedly produces approximately 1/1000 of the detectable noise of the Redoutable-class boats (submarines), and they are ten times more sensitive in detecting other submarines.[4] Initially armed with the M45 missile, they are designed to carry the new M51 missile, which entered active service in 2010. As of October 2010, an M51 has been test-fired from one of these submarines across the Atlantic Ocean from near France to the west, and is equipped on TERRIBLE.

These boats were all constructed by the DCNS, and they carry an armament of 16 M45 SLBM or M51 SLBM missiles manufactured by the Aérospatiale company (now Airbus Defence and Space), plus conventional torpedoes and Exocet anti-ship missiles.

List of submarines
The French Navy's goal is to operate a force of four ballistic missile submarines (comparable with the Royal Navy's Vanguard-class submarines), of which two are expected to be on patrol at any given time.
Name Construction began Launched Commissioned
Le TRIOMPHANT 9 June 1986 26 March 1994 21 March 1997
Le TÉMÉRAIRE 18 December 1993 21 January 1998 23 December 1999
Le VIGILANT January 1996 19 September 2003 26 November 2004
Le TERRIBLE 24 October 2000 21 March 2008 20 September 2010[5]

Service history
On 3 February or 4 February 2009, Le TRIOMPHANT collided with the Royal Navy submarine HMS VANGUARD; the Royal Navy boat suffered minor scrapes and scratches.
Le TRIOMPHANT was reported to have proceeded to Brest under her own power, submerged, but with extensive damage to her sonar dome

https://en.wikipedia.org/wiki/TRIOMPHAN ... _submarine
Togo 2019 800F sg?, scott? (Although this issue was authorized by the postal administration of Togo, the issue was not placed on sale in Togo, and was only distributed to the new issue trade by Togo's philatelic agent.)