On April 4, 2024, Admiral Nicolas Vaujour, Chief of Staff of the Navy, declared the admission to active service of the nuclear attack submarine (SNA) Duguay-Trouin. It is the second in the series of six Suffren-type SNAs which will replace all Rubis-type SNAs by 2030.

Admission to active service is pronounced after sea trial phases beginning in March 2023. These phases of Verification of Military Characteristics (VCM) allow crews to test the performance, endurance of the vessel as well as the conformity of the equipment to the requested specifications.

During its tests, the Duguay-Trouin sailed in cold and warm waters, with a stopover in Fort-de-France in March 2024; a first for a Suffren type SNA. It will now be deployed in operations. The Duguay-Trouin , like the first in series, the SNA Suffren , will carry out the same missions as the Rubis-type SNA, with greater capacities. In particular, it has a land strike capacity with the Naval Cruise Missile (MdCN) and a capacity to deploy special forces through a swimming airlock and through its deck hangar.

Admission to active service is pronounced after sea trial phases beginning in March 2023. These phases of Verification of Military Characteristics (VCM) allow crews to test the performance, endurance of the vessel as well as the conformity of the equipment to the requested specifications.

During her tests, Duguay-Trouin sailed in cold and warm waters, with a stopover in Fort-de-France in March 2024; a first for a Suffren type SNA. It will now be deployed in operations. The Duguay-Trouin , like the first in series, the SNA Suffren , will carry out the same missions as the Rubis-type SNA, with greater capacities. In particular, it has a land strike capacity with the Naval Cruise Missile (MdCN) and a capacity to deploy special forces through a swimming airlock and through its deck hangar.