According to a post on PCWorld, Ships that call on port of Singapore can now use WiMax instead of satellite to connect to the Internet. Singapore's maritime WiMax network will extend 15 kilometers offshore, covering its southern coastline and port, once completed. This harbor is one of the world's busiest with 140,000 ship calling in every year. The government-led project, called WisePort, is run by local operator QMax Communications and uses the same version of WiMax found in South Korea, called WiBro, that uses the 2.3GHz spectrum band.
You can read more about it at PCWorld.