On 2 August 1918, Floréal collided with the Royal Navy armed boarding steamer HMS Hazel in the Aegean Sea and sank.

[1] In January 2024, the boat was found in good condition at a depth of 98 metres in the Thermaic Gulf by a team of wreck hunters led by Kostas Toktaridis.

[2] The Pluviôse class were built as part of the French Navy's 1905 building program to a double-hull design by Maxime Laubeuf.

The other launchers were a rotating pair of Drzewiecki drop collars in a single mount positioned on top of the hull at the stern.

[7] Floréal, named after the second month of Spring in the French Republican Calendar, was ordered on 26 August 1905 from the Arsenal de Cherbourg.