The Loire 210 was designed to meet a 1933 French Navy requirement for a single-seat catapult-launched fighter seaplane.

[1] The fuselage came from the earlier Loire 46 fitted with a new low-wing which was foldable for shipboard stowage.

[2] The prototype was evaluated by the French Navy against the Bernard H 110, Potez 453 and Romano R.90 with the 210 achieving a production order for 20 aircraft in March 1937.

The production aircraft were fitted with four wing-mounted Darne machine guns (the prototype had only two).

[4] Data from The Complete Book of Fighters [6]General characteristics Performance Armament