Symmetrical spinnaker size for Bavaria 39 Cruiser

[marp]

Hello all! I need some help, do You know what should be the size of Symmetrical spinnaker for Bavaria 39 Cruiser - ideally leach and foot length?

[sy_Anniina]

I would approach a sailmaker or consult online spinnaker fitting instructions like https://ispinnakers.com/sizing/cruising-spinnaker-sizing/

FWIW, our Bavaria 40 from 2001 has following rig & spinnaker (symmetrical) dimensions:

I Spin 14.950m
J 4,400m

SL (Spin  leech length?) 13,80m
SMG (Spin mid-girth) 7,60m
SF (Spin foot) 7,30m

BR,
Tommi - s/y Anniina