Wikimedia Public Domain SS-Savannah Steam Engine Hybrid December 29, 2022 400 × 296 An In-depth Look at How Steam Engines Work and Their Impact on History SS Savannah. Half steam boat, half sailboat. Wikimedia Public Domain 122922 This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author’s life plus 100 years or fewer. https://commons.wikimedia.org/wiki/File:SS-Savannah.jpg