The Battle of Oliwa, fought in the Baltic Sea, stands as a key turning point in the naval history of the Polish–Lithuanian Commonwealth during the Polish–Swedish War. The conflict originated from competing territorial claims and the struggle for dominance in the region, exemplifying the broader geopolitical tensions of the time. The navy of the Commonwealth, which had been growing in strength, was commanded by Admiral Jerzy Kreczmar, who led his forces against a Swedish fleet aiming to establish maritime supremacy. The engagement was characterized by fierce naval combat, with ships exchanging cannon fire amidst the harsh conditions of the Baltic. The Commonwealth fleet, though outnumbered, employed strategic maneuvering and effectively coordinated assaults to repel the Swedish forces.As the battle progressed, the naval forces of the Commonwealth displayed resilience and adept tactical responses, leading to the eventual collapse of the Swedish fleet's coordinated attack. The victory not only demonstrated the naval capabilities of the Commonwealth but also had a profound impact on the morale of its sailors and the populace back home. While it illustrated the peak of the Commonwealth's naval prowess, this victory would also signify a transitional moment, as the navy faced decline in subsequent years due to various political and military challenges faced by the Commonwealth. This battle is one of the few major naval victories recorded in the history of the Commonwealth, leaving behind a legacy of maritime ambition and struggle in the region.