Many major ports in the United States have webcams, including San Francisco Bay, Port of Miami and New York Harbor. There are also several major ports around the world that have webcams, such as in Hong Kong and Sydney.
These webcams are accessible online by searching for each individual port. Another easy way to find the webcams is to search on ShipDetective.com. The live footage available varies depending on the location of the camera. While New York Harbor's webcam offers some great close-up views of incoming ships, the webcam at San Francisco Bay shows a wide shot of the city, bridge and bay.