 A leading admiral over the next decade, he would have later encounters with other Dutch corsairs of the period including Captain Claes Compaan who escaped from him after sighting the corsair off the Spanish coast.From 1633 until 1637, Collaart served as Vice Admiral with the Royal Squadron operating out of Dunkirk and, in 1635, his attacks against Dutch herring redders would cost the city of Flushing ("Vlissingen") over two million guilders in income.Although the city of Dunkirk was under a Dutch blockade during early 1635, the blockade was temporarily weakened as several warships under Lieutenant-Admiral Philips van Dorp were supporting French naval forces in the Gulf of Biscay and, on 14 August, Collaert sailing out of Dunkirk successfully broke through the Dutch blockade with a fleet of twenty-one vessels.