National park officials say a speed limit is needed on the lake

In 2002, almost 500 warnings about speeding were issued by the Lake Patrol Team, and in 2001 there were 638.

The Lake District National Park Authority ranger accepts that the speed measurement on some craft is not always totally accurate, so is asking people to take advantage of the offer.

A laser gun will be used to carry out the checks, and if there's a discrepancy in the readings, a sticky label will be issued for the dashboard.

This will show the adjustment that needs to be made.

The four busiest areas of Windermere have a 6mph limit, and from 29 March 2005 there will be a 10mph limit on the rest of the lake.

Public inquiry

Water sports enthusiasts have formed the Windermere Action Force (WAF) to put forward their case.

But the Lake District National Park Authority says a 10 year debate, including a three month public inquiry, means the speed limit will still come into force in 2005.

Local councillors and national park officials say the by-law is designed to stop fast power boats and jetskis taking over the famous inland water.