Swansea Bay welcomes sailors from all over the world for a festival of sailing this week.
The exciting Dart 18 class of racing boats are in Mumbles for a series of races this week.
The competition is part of the European Chamionships.
There will be about 100 boats taking parts with competitors coming from as far afield as New Zealand.
The boats are 18 foot long catamarans which have a crew of two.
Sounds like a great spectacle to go and watch this week.
