Slow-speed zones and new life jacket rules have been brought in to improve safety at Loch Lomond.
The byelaw changes, which also aim to reduce irresponsible behaviour, came into effect on Friday following a 12-week public consultation.
It means under-16s must wear life jackets or buoyancy aids when they are on any moving vessel on the loch – including boats, canoes, kayaks and paddleboards.
People also need to register in advance with the National Park Authority if they intend to be in charge of any vessel with an engine, including jet skis.
Other changes include the introduction of new 6kph slow-speed zones at Balloch Castle Country Park, Duck Bay, Manse Bay, Milarrochy Bay, Luss, Sallochy and Rowardennan.
It is also now an offence to damage, remove or tamper with public rescue equipment such as emergency rescue life rings or throw lines.
Kenny Auld, head of visitor services at Loch Lomond & The Trossachs National Park Authority said: “The new Loch Lomond Byelaws are an important tool for promoting public safety and responsible enjoyment of Loch Lomond, which is used by a range of different groups, from wild swimmers and water sports enthusiasts to anglers and local businesses.
“Our Ranger Team patrols Loch Lomond on a daily basis and while the vast majority of engagement with loch users is positive, it is also important to have an effective deterrent to irresponsible behaviour.
“There have been increased concerns about disturbance, antisocial behaviour and safety risks on Loch Lomond in recent years and the changes coming into force today are aimed at addressing those concerns so that Loch Lomond can be enjoyed safely by the thousands of people who spend time here every year.”
The Loch Lomond Byelaws were introduced in 1996 and are required by law to be reviewed at least every ten years.
The changes coming into force today were developed following a thorough and inclusive review process, involving consultation with local stakeholders, the wider public and legal counsel.
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