SELF-TACKING JIB SYSTEM
TRACK RADIUS CALCULATOR

 

Insufficent data

Input

 

Rig info (required)
FH mm Forestay height
J mm Distance forestay chainplate to forward face of mast
HSheave mm Sheet sheave height from mast step (only for sheet up the mast) 
Self-tack data
dF mm Track centre forward of mast forward face
S mm Track width end to end

 

 

Output

 

Sheet forward - single bend
  ° deg Track angle relative deck
RV mm Track curvature ends up

Sheet forward - double bend
  ° deg Track angle relative deck
RV mm Track curvature ends up
RH mm Track curvature ends forward

Sheet athwartships (along track) - double bend
  ° deg Track angle relative deck
RV mm Track curvature ends up
RH mm Track curvature ends forward

Sheet up the mast - double bend
  ° deg Track angle relative deck
RV mm Track curvature ends up
RH mm Track curvature ends forward