[1] On 18 July 1805 a British squadron spotted the French Boulogne flotilla sailing along the shore.

Captain Edward Owen of Immortalité sent Calypso, Fleche, Arab, and the brigs Watchful, Sparkler, and Pincher in pursuit of 22 large schooners flying the Dutch flag.

The British managed to force three of the schooners to ground on the Banc de Laine near Cap Gris Nez; their crews ran two others ashore.

However, the bank off Cape Grinez, and the shot and shells from the right face of its powerful battery, soon compelled the British to move back from the shore.

Her crew had to take to her rigging after water came up over her upper deck and the surf started breaking over her.