Under sec 98, it says the commerce clause includes navigation as well.

The computer failures included at least navigation (completely lost) and communication.

The new system includes navigation, communication, and wide-screen entertainment.

Projects include navigation, flood damage reduction, shore protection, and environmental restoration.

Training will also include basic communication, navigation, employment techniques, weapons training and small unit tactics.

More particular features includes video chat, promotions and easy navigation.

As the power plants became larger, their associated dams developed additional purposes to include flood control, irrigation and navigation.

Other purposes of the dam include flood control, navigation and irrigation.

These include navigation, finding fish, collision avoidance, routine voice and email communications, etc.

Their responsibilities included water conservation, land drainage, fisheries, control of river pollution and, in some cases, navigation.