All occupants of vessels listed above are to wear a specified lifejacket at times of heightened risk when in an open area of a vessel that is underway. This also applies to occupants of the following vessels:

• yachts (including monohull, trailerable and multihull yachts but excluding off- the-beach sailing yachts)
  
• power driven vessels greater than 4.8 m and less than 12 m.