Todd Humphreys, professors at the University of Texas, demonstrated that just using a cheap apparatus composed by a small antenna, an electronic GPS “spoofer” built in $3,000 and with a laptop, it is possible to exploit GPS vulnerability to obtain control of sophisticated navigation system aboard a 210-foot super-yacht in the Mediterranean Sea. Humphreys demonstrated the exploit of a GPS vulnerability aboard the yacht “White Rose of Drachs” The attack could be used to disorient any vessel with serious consequences without victims notification.
Source: https://thehackernews.com/2013/07/GPS-vulnerability-hack-navigation-drone-hacking.html