Nautical Porthole Illustration - Maritime Design Element #136052 (License: Personal Use)

This digital illustration depicts a classic round porthole commonly found on ships and submarines, featuring a smooth blue-tinted glass center, a thick golden-yellow outer rim, and six evenly spaced metallic bolts. Two blue locking clamps secure the frame, with one slightly open to suggest functionality and realism. The clean vector style makes it suitable for both decorative and functional web applications.

Used in maritime-themed websites, educational materials about naval architecture, UI elements for travel apps, or as an icon representing exploration and seafaring. Matches user intent for visual metaphors of windows, observation, or nautical design.