Thames Navigation refers to the management and regulation of boat traffic on the River Thames in England. This river is one of the most important waterways in the country, facilitating both commercial and recreational activities. Various authorities oversee navigation, ensuring safety and accessibility for all types of vessels. The Environment Agency is responsible for maintaining the river's navigable channels and providing information to boaters. They also manage locks and weirs, which help control water levels and flow. Additionally, the Port of London Authority plays a key role in overseeing navigation in the tidal sections of the river, supporting trade and tourism.