Identify the correct parts of the sailboat in the above illustration. Apply the correct values to the formula to get the final location.
47 qr.stu 122 vw.xyz
q=A+B, r=C+D, s=C+D+E+F, t=F-A, u=A+D-B
v=G, w=H-G, x=H+I, y=I+J, z=K-L-G
For added fun - if you've been sailing, describe in your online log what kind of boat it was.

FTF kudos go to the aptly named Captain Trevos&Crew.
Below - The cache owner not sailing properly. 