 Within three days, Collaart's fleet located a herring fleet numbering 160 under the guard of a single man-of-war, armed with 39 guns and an 85-men crew.Easily disabling the escort, 74 vessels were either sunk or set afire with the surviving vessels escaping to the Vlie.On 19 August, after chasing off the six men-of-war escorts, Collaart's forces destroyed around 50 herring boats near Doggersbank.