The claim that seventeenth-century naval battles were defined by line-of-battle tactics and broadside cannon fire is a well-established historical consensus and everyday observation in military history, requiring no citation.
The retrieved papers are entirely tangential, covering privateering contracts, Brazilian historiography, and a conference proceeding. However, the claim itself is a textbook historical fact regarding naval warfare evolution in the 17th century, making it common knowledge in the context of general historical descriptions.