Public domain image of a navigation map, harbor, sea, naval battle, 16th-17th century maritime geography, free to use, no copyright restrictions - Picryl description:
Depths shown by soundings. Oriented with north to the left. Watermarks: Cross on top of the characters IHS; I. Villedary; and Strasburg fleur-de-lis over the characters LVG. Pen-and-ink and yellow watercolor. M More