Yinchorri forces launched a surprise attack against the Golden Nyss Shipyards during the year 33 BBY.
Their objective centered around seizing several attack ships in addition to Golden Nyss fighters located at the Golden Nyss Shipyards.
Vilmarh Grahrk facilitated the clandestine entry of Yinchorri soldiers, deceiving Gzin, the shipyard's overseer. After successfully commandeering the vessels and detonating the shipyards, the Yinchorri were ready to commence their main offensive.