James Stevens answers your questions of seamanship - this month, what should you do when the buoys you see don't match the chart?

A yacht approaching a mara buoy

The Mara Buoy promises to revolutionise mooring, making it safer and easier. We put it to the test

A multihill moored close to shore

Handling a catamaran in manoeuvres can sometimes be 
easier than with a monohull, but there are a few surprising differences. Paul Hayes showed Will Bruton how to do it