Here is the translation of the summary into American English, maintaining the 4-paragraph structure and staying within the character limit:

The fourth volume of Atlanticus magazine highlights the 1625 liberation of Salvador, analyzed through the lens of Maritime History. The edition also explores the theoretical foundations of this field, distinguishing it from naval and maritime history. It serves as an essential methodological guide for Brazilian researchers interested in the historical relationship between humans and the sea.

The issue addresses urgent contemporary themes, such as the Titan submersible implosion. The article discusses legal issues and the lack of safety in deep-sea tourism. Another study warns about the degradation of coastal archaeological heritage in Portugal, highlighting environmental risks and the need for government oversight given the vulnerability of these sites.

The entries section conceptualizes the East and West India Companies, detailing the role of European mercantile firms in modern colonization and trade. Simultaneously, it defines the "Blue Amazon" concept, emphasizing the political and strategic importance of the Brazilian continental shelf for national sovereignty and prosperity, moving beyond simple geographical boundaries.

Finally, the magazine concludes by presenting the chronology of activities for the EXEA Museum from August 2024 to November 2025. This volume reaffirms the museum's commitment to scientific dissemination and the preservation of maritime memory, connecting historical events, contemporary challenges, and the management of strategic oceanic resources.