A catamaran will be used by rangers to patrol England's longest lake, to reflect a shift in leisure activities.
|Lake Windermere Launch Area|
The Lake District National Park Authority said it would provide a more stable platform for their work on Windermere than the inflatable and motorboat currently used.
The Cheetah catamaran is similar to vessels used by police and the Environment Agency.
Rangers enforce by-laws, offer safety advice and carry out conservation work.
Park management ranger Sara Spicer said: "We are encouraging a shift from fast watersports towards sailing, paddle craft and open water swimming.
"As the emphasis alters, so does our role.
"These days an important part of our work is watching out for the ever-growing number of swimmers, advising them to be visible and boat users to be on the look-out for them."