The line announced today that it had signed a “letter of intent” for the new ships, which it said was the “first step in a project to expand the company’s fleet”.
It comes after the business was acquired by Artemis in 2015.
The line added that the ships would be equipped with the “latest environmental preservation technology”.
They will join the line’s yacht Le Ponant and sister ships, Le Boreal, L’Austral, Le Soleal and Le Lyrial, which were built by Fincantieri between 2010 and 2015.
Like its other vessels, the new ships will also be “small-capacity, intimate ships” - 128m in length with 92 staterooms, and a crew of 110.
They will also be ice-class ranked and equipped with the latest technologies, and able to reach sites that larger vessels cannot access, Ponant said.