Boats on eastern England's biggest inland waterways are subject to safety spot checks from Sunday.
Boats on the Broads will be subject to spot safety checks
New byelaws covering boat appliances have come into effect on the Broads of Norfolk and Suffolk to enhance safety on the rivers and lakes.
The safety scheme was launched at the Boat Jumble, an annual event attracting thousands of visitors each year, and will be enforced by inspectors.
Charlie Middleton, waterways officer, said the aim was to make boats safer.
"The Boat Safety Scheme operated by the Broads Authority is a four-yearly MOT-type test for boats covering engines, cooking, heating, lighting, refrigeration and other domestic appliances.
"Owners will have to comply with its conditions to be able to navigate the Broads."
Inspectors will be able to check that boats carry a valid certificate to show their engines and equipment have passed the required tests.