WOO was the radio call sign of the now-defunct AT&T high seas radiotelephone station in Navesink, New Jersey, USA. Before satellite communication systems were widely available, the only way ships at sea had to communicate with the rest of the world was via HF SSB connections to land stations. The AT&T high seas service consisted of WOO and her sister stations WOM (Miami, Florida) and KMI (Point Reyes, California).