Definition
A Latin phrase meaning "arising from a maritime matter" or "of maritime origin." The term appears in early admiralty jurisprudence as a classificatory label for causes of action rooted in maritime commerce, navigation, or seafaring activity — as distinguished from matters arising on land or through purely civil relations unconnected to the sea. Its function was descriptive rather than operative: to signal that a dispute belonged to the jurisdiction of admiralty courts rather than common law tribunals.
Why It Matters in Research
The phrase is rare in modern legal literature and will appear almost exclusively in historical admiralty materials, particularly early American and English prize and admiralty reports. Researchers encountering it in primary sources should treat it as a jurisdictional marker — its presence signals that the court or writer is framing a claim as falling within admiralty cognizance. This framing was contested terrain in early Anglo-American law, where the boundary between admiralty and common law jurisdiction was actively disputed. The phrase thus appears not as a neutral descriptor but often as an argument: that the matter at hand is of maritime origin and therefore properly before an admiralty tribunal.
The Black's Law Dictionary entry attributes the phrase to Selden, identifying it as his translation. This points to John Selden's seventeenth-century writings on admiralty jurisdiction, most notably his work on the dominion of the sea. Researchers tracing the intellectual history of American admiralty jurisdiction will find that Selden's framework was frequently invoked in early federal admiralty cases, making this phrase a thread connecting early republic jurisprudence to English jurisdictional theory. The citation to 1 Pet. Adm. 92 — Richard Peters's admiralty reports — places the phrase in the district court admiralty practice of the early United States, a corpus that is foundational for understanding how Article III admiralty jurisdiction was first applied.
Because the term is bound to a specific historical moment and scholarly lineage, researchers should not expect to find it in modern admiralty pleadings or statutes. Its utility is almost entirely historical and interpretive.
Historical Dictionary Support
Black's Law Dictionary preserves the phrase with a brief gloss — "for some arising out of a maritime matter" — and flags it as Selden's translation, though the entry as it survives is incomplete, breaking off mid-attribution. This truncation is itself informative: it suggests the phrase was treated as a scholarly reference rather than a term of art requiring extended definition, and that its audience was assumed to have access to the Selden corpus directly.
The incompleteness of the Black's entry is a caution to researchers. The phrase should not be treated as having a fully settled legal definition drawn from this source alone. It is a scholarly borrowing from learned admiralty literature rather than a term forged in statutory or case law. Historical dictionaries beyond Black's do not appear to have given it independent treatment, reinforcing its character as a term of art confined to a narrow strand of admiralty scholarship.
Jurisdictional Note
The phrase belongs to the admiralty tradition common to both English and early American courts. In the United States, federal admiralty jurisdiction is constitutional in origin, vesting in Article III courts. The phrase has no recognized role in civil law admiralty systems.