The naval Battle of Saint-Mathieu unfolded during the War of the League of Cambrai, reflecting the intense power dynamics in Europe at the time. Located off the coast of Brittany, this confrontation involved a French fleet engaging with English naval forces in a battle that emphasized the importance of naval supremacy in securing territorial control and trade routes. On that fateful day, two notable ships were involved: La Cordelière, a Breton flagship renowned for its size and strength, and The Regent, a prominent English vessel. The battle was characterized by fierce naval tactics and marked by fierce cannon fire from both sides. Ultimately, both ships met their doom in a fiery destruction that underscored the volatile nature of maritime warfare.As the battle progressed, various maneuvering strategies were employed, and the chaos of warfare at sea became palpable. The structural deficiencies of naval battle tactics were exposed, leading to critical reflections on ship design and naval combat protocols. The sinking of La Cordelière and The Regent not only served as a pivotal moment for the fleets involved but also as a harbinger of changes in naval warfare strategies throughout Europe. The loss of these ships resulted in significant casualties and highlighted the perils of naval engagements amid rising competition for dominance in the Atlantic waters.