Canterbury's coast, lakes and rivers are highly valued for recreational activities and the ports of Lyttelton and Timaru are vital to the regional economy. Recreational boating activity in the sea, lake and rivers is increasing. Navigation safety issues include ensuring free passage for large ships that cannot manoeuvre easily; separating areas for particular purposes such as water skiing, swimming and sailing; handling dangerous bulk materials; and the wearing of lifejackets by children in small craft. There is a high degree of reliance on responsible behaviour by the recreational boating sector. In high use areas, contracted and honorary enforcement officers assist with education and where necessary, bylaw enforcement. The main ports and harbours in Canterbury have a good safety record but there are risks. Understanding and managing this risk is necessary for the well-being of port users and protection of the environment. Environment Canterbury is responsible for preparing navigation safety bylaws, enforcing maritime protection and safety rules, implementing the Port and Harbour Safety Code and preparing a regional oil spill plan.