BBC Sport - Get Inspired: BBC Breakfast take a tour round three Olympic-class boats

Know your 470s from your 49ers?

Don't know your 470s from your 49ers?

Don't worry - you won't be alone.

Sailing can sound strange to the uninitiated, but BBC Breakfast's Lorna Gordon has been to find out what the difference is between three Olympic-class boats.

If you want to find out more about getting into sailing, take a look at our special guide.

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