[2] It is designed to fit warships of all types ranging from patrol boats to frigates to aircraft carriers, notably as a close-quarters self-defence weapon.

The first FREMM to be fitted with Narwhal immediately after construction was Normandie in 2013,[6][7] before being renamed to Tahya Misr and transferred to Egypt in 2015, without ever being commissioned in the French Navy.

The Narwhal on FREMMs are interfaced with the Herakles radar through the combat information system, minimising reaction time when attacking targets.

[12] Air defence frigates of the Horizon class carry three Narwhal to replace the original manually operated 20 mm F2 autocannons.

[14] The project for Patrouilleur Outre-mer patrol vessels, unveiled in January 2020, also comprised a Narwhal gun as main armament at the bow of the ship.