By 2006 the lack of any government-controlled naval authority along the Somali coast was taking its toll. Pirate gangs controlled by local warlords started to capture passing merchant ships in an attempt to gain funding by ransoming the ships and their crews. As the raids became successful, the pirates became bolder. They began seizing UN aid ships, and even attacked a cruise liner attempting to capture it for ransom. The U.S. and Coalition vessels from Combined Task Force 150 began actively pursuing pirate vessels in an attempt to deter the attacks.