This is a vintage black and white woodcut illustration depicting a peculiar swimming apparatus. A man with a mustache and sideburns is positioned within a long, narrow, boat-like device. The device is propelled by two large, paddle-wheel-like propellers, one on either side. The propellers are connected to a central mechanism, suggesting a hand-cranked or foot-powered system. The man appears to be reclining or lying down within the apparatus, with his head and shoulders visible. The background is filled with short, horizontal lines representing water, creating a sense of movement and immersion. The illustration is labeled 'Fig. 466 - Swimming apparatus.'