#### Pandoramark1

##### New member

So again I find myself out of my depth, and I have not even left the shore yet

I have been trying to work out my sail dimensions and for the most part I am cool, however trying to figure out the dimensions of the Roller Genoa, I have the Luff/leech, but am struggling with the foot and LP.

A) Is the foot the bottom of the forestay at bow to the base of mast?

Or

B) Is it bottom of the forestay at bow to the foremost fairlead position?

This then leaves me with the following

Luff – 7.3m

Leach – 6.7m

Foot – A)2.55m B)3.5m

LP – Even though I have read about this I just do not know what to do

Can someone explain to me how I calculate the LP please (and if possible show workings)

Thanks

PMK1