The entity/boat-sheet.png and derived icon/boat.png and technology/boating.png graphics where made by Meowx Design and Animation website http://www.modenstudios.com/ and are licenced CC-BY-SA 3.0. These graphics are a subset of the graphics pack avalible for download at http://opengameart.org/content/meowx-shipyard-large-number-of-spaceship-sprites.
