I found this grouping quite challenging to draw.
Also known as The Two Wrestlers, The Uffizi Wrestlers or The Pancrastinae. The sculpture is a Roman marble sculpture copy of a lost Greek original from the third century BCE. The piece is in the Uffizi collection in Florence, Italy.
A concept for a 19th-century survey vessel that will be the setting for a comic. Has both steam power and auxiliary sails, of course! The bubble in the middle is a weather balloon that can be deployed from midships.