An alien submarine discovered on Mars

On December 2016, the rover Curiosity has caught a photo of a possible alien submarine on Mars. What is it?

Scott C. Waring explains:

This alien artefact was found by Mars Moon Space TV of Youtube. The object looks like a submarine. You can see that parts of its outer hull have broken open and exposed the inner levels of the vessel. Again this week (and we have heard this every month for two years now) NASA has said there were lakes and oceans on the surface of Mars. This vessel was probably a craft that sailed that ocean long ago.