Pars altera speculi marini

Lucas Jansz. Waghenaer was a Dutch pilot, chartmaker, and author from Enkhuizen whose sea atlases transformed European pilotage. Drawing on practical experience at sea, he developed printed pilot books that combined charts, sailing directions, coastal profiles, and navigational instruction in a form that became the model for later European sea atlases. His Spieghel der zeevaert, or Mariner’s Mirror, first published in 1584–85, was so influential that English mariners adopted the term “waggoner” for sea atlases of this kind.

The Spieghel was quickly translated and adapted for an international audience, including the 1591 Latin edition represented by this title page, which is designed around an architectural structure framing the central title panel. Beneath the title, a fully rigged ship sails on a calm sea, flying the flags of Holland and Enkhuizen. Around the ship are pairs of dividers, box compasses, and two sea monsters. At the top, five figures and a young boy gather around a large circular mirror, symbolising the “mirror” of navigation, flanked by celestial and terrestrial globes and two hourglasses. The surrounding space is filled symmetrically with navigational instruments, including a quadrant, an astrolabe, and a cross-staff. Below, two seamen stand beside the columns, casting a lead line and weight to measure depth. Waghenaer described the astrolabe and cross-staff as the “best instruments one uses for the improvement and knowledge of navigation, ” underscoring their importance to the art of maritime exploration.

Within the collection, this title page is closely connected with the later French edition title page (233) and the Sunda Strait chart from Thresoor der zeevaert (100).