The IRC New Flying Headsail: What's the Buzz?
A UK Sailmakers Flying Headsail Credit: UK Sails Barry Hayes of UK Sailmakers Ireland (in conjunction with Jenny Howells of the RORC Rating Office) explains the main difference between a flying Jib and an IRC flying headsail The main difference between a flying Jib and an IRC flying headsail is the flying Jib is non-overlapping and measures in as a headsail (Headsail Area HSA). The flying headsail (flying sail area FSA) is a small, flat and overlapping code zero which is a new sail type in IRC. The flying headsail is a code zero development and has very little to do with a headsail as it'...
Source: afloat.ie