Water cannons were first devised for use on fireboats. She will be one of the most powerful fireboats in the world. It currently operates 4 boats, Fireboats 1, 3, 4 and 5. Jacksonville Fire and Rescue operates a fleet of three fireboats. The service presently has two fireboats in service. It is one of only five fireboats designated as a National Historic Landmark. It is one of four New York fireboats currently in active service. All seven are able to man the fireboats in an emergency. Also headquartered at the site is one of three fireboats, FDNY Marine company 9. The SFFD has three fireboats that are docked at Pier . As of 2013 there are four small fireboats operated in St. Louis. In the Thames opposite is London's only river fire station, home to two fireboats. It also constructed ferries, fireboats for local and state governments. By 1960, the department operated 48 engines, 29 ladders, 1 rescue, and 2 fireboats. She was met out of the harbor by her sister fireboats and escorted in.