Overview Related


A trim simulation for sail boats that are rigged similarly to a 420 dinghy. You select a parameter, for example the Headstay-Length, and then change the value of that param with the mouse wheel. On the real boat the equivalent would be that you tighten the jib halliard watch how the mast will come forward and start to bend. Watch the graph while you scroll the mouse wheel. Text output is included and can show absolute or differential values. I have published the computation (model) and most of the user interface (graph) as Open Source - see project RiggVar-RG38 at GitHub.


Additional information

Published by

Gustav Schubert

Release date


Approximate size

11.37 MB

Age rating

For ages 3 and up



This app can

Access all your files, peripheral devices, apps, programs and registry


Get this app while signed in to your Microsoft account and install on up to ten Windows 10 devices.

This product needs to be installed on your internal hard drive.

Language supported

Deutsch (Deutschland)

Publisher Info

Trimm420 website

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