This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
FreeSurfaceEfect. ES Esquema de efecto de superficie libre en la estabilidad del buque EN free surface efect on ship's stability Own Claudio Elias Ship stability
Page 2023 Free-images.com. All images are Public Domain