Figure Out Your Rig Dimensions When It Comes To Your Sails
The basic rig dimension for a yacht are generally understood. However, there are some differences in how some sailors describe these dimensions. Here is how we define them at North Sails.
I – Height of Foretriangle
Elevation of Forestay, measured down to elevation of main shrouds at sheer line.
J – Base of Foretriangle
Horizontal distance measured from front face of mast at deck to position of headstay at sheer line.
P – Mainsail Hoist
Elevation of upper mast band or maximum main halyard position, measured down to lower mast band or top of boom.
E- Mainsail Foot
Horizontal distance measured from aft face of mast at top of boom to boom band or maximum outhaul position.
Is – Height of Inner Foretriangle
Elevation of Forestay, measured down to elevation of main shrouds at sheer line.
Js – Base of Inner Foretriangle
Horizontal distance measured from front face of mast at deck to position of inner headstay at sheer line.
Py – Mizzen Mainsail Hoist
Elevation of upper mast band or maximum main halyard position, measured down to lower mast band or top of boom.
Ey – Mizzen Mainsail Foot
Horizontal distance measured from aft face of mizzen mast at top of boom to boom band or maximum outhaul position.
ISP – Elevation of Spinnaker Halyard
Measured down to elevation of main shrouds at sheer line.
SPL – Spinnaker Pole Length
STL – Spinnaker Tack Length
Horizontal distance measured from front face of mast at deck, forward and horizontally to position of spinnaker tack attachment point.
The off-season is the ideal time to give your sails the TLC they deserve. Keeping your sails on an annual maintenance schedule will aid in extending the lifespan of your sails and maintaining peak performance.
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