Definition
A license or official permission granted to the master of a ship authorizing the vessel to enter port, land passengers and crew, and engage in commerce with the inhabitants of that port. Pratique is issued upon one of two conditions: (1) the vessel has complied with applicable quarantine regulations, or (2) the master has produced a clean bill of health certifying that the port of departure was free of infectious or contagious disease. Until pratique is granted, a ship arriving in port has no lawful authority to make contact with shore, discharge cargo, or conduct trade. The term operates within the intersection of maritime law and public health regulation and is closely connected to the law of quarantine.
Common Language
Modern common usage (Wiktionary): Permission to use a port given to a ship after compliance with quarantine or on conviction that she is free of contagious disease. Also, archaic: practice or habits.
Historical common usage (Webster's 1913): Primarily, liberty of converse or intercourse; hence, a certificate permitting a ship to land passengers and crew after compliance with quarantine — used particularly in southern Europe. Separately and now obsolete: practice or habits, as in "one of English education and pratique."
The legal and common meanings are unusually close here, but the archaic sense of "practice or habits" present in Webster's 1913 has no legal dimension and is wholly obsolete. Researchers encountering the word in older non-legal texts should not assume the maritime meaning applies. In legal usage, pratique is consistently and exclusively a term of port and quarantine administration.
Recognized Forms
/SUBTYPES
Clean pratique: Permission granted upon presentation of a bill of health certifying that the vessel's port of origin was free of infectious disease, without the vessel having undergone formal quarantine detention.
Foul pratique: (Less commonly used term.) Permission granted only after the vessel has completed a required period of quarantine, typically because the port of origin was subject to disease conditions or the bill of health was suspect.
Why It Matters in Research
Pratique is a term that researchers will encounter primarily in three bodies of material: historical maritime law texts, port and quarantine regulations from the eighteenth and nineteenth centuries, and international public health conventions predating the modern World Health Organization framework. Its relevance in contemporary domestic American legal materials is minimal, and it does not appear with regularity in modern federal statutes or judicial opinions. Researchers working with nineteenth-century admiralty records, colonial-era port authority documents, or early federal quarantine legislation will find the term appearing with some frequency, particularly in sources touching on Mediterranean and Caribbean trade routes.
A key navigational point: the scope of pratique evolved across the period covered by the historical dictionaries. Early definitions (Black's 1st edition, Rapalje & Lawrence, Bouvier) tied pratique narrowly to Italian ports and to a certificate of origin free from disease — reflecting the Mediterranean origins of the practice, where Italian port cities were aggressive enforcers of quarantine law. Black's 2nd edition broadened the definition considerably, describing pratique as a license to traffic in ports of "a given country" or with inhabitants of "a given port" upon either lifting of quarantine or production of a clean bill of health. This expansion reflects the globalization of quarantine law through international conventions and the adoption of comparable port health regimes far beyond Italy and the Mediterranean.
Researchers should also note the connection to the bill of health — a distinct but functionally linked document. Pratique is the permission; the bill of health is typically the predicate instrument that triggers or supports the grant of pratique. Conflating the two is a common error in reading historical sources. The bill of health is issued at the port of departure; pratique is granted at the port of arrival.
Historical Dictionary Support
The four source dictionaries are in substantial agreement on the core meaning but differ in geographic scope. Black's 1st edition, Rapalje & Lawrence, and Bouvier all define pratique with specific reference to Italian ports, citing the Encyclopaedia Londinensis as authority. This reflects the historical origins of the institution: the quarantine system was developed most systematically in Italian city-states during the plague centuries, and pratique as a legal term entered the maritime vocabulary through that Mediterranean administrative tradition. Black's 2nd edition is notably more expansive, dropping the Italian specificity and describing a generalized license applicable to any port — a modernization that tracks the spread of codified quarantine regimes through the nineteenth century.
None of the historical dictionaries address what happens when pratique is refused or revoked, the administrative process for obtaining it, or the liability consequences for a master who trades without it. These are gaps a researcher must fill through primary sources rather than relying on dictionary treatment alone. Bouvier's cross-reference to Rapalje & Lawrence is circular and adds nothing beyond the shared Encyclopaedia Londinensis citation. Webster's 1913 is the most useful supplementary source here because it captures the functional dimension — pratique as "liberty of converse" and intercourse with shore — that the purely legal dictionaries understate.
Jurisdictional Note
Pratique as a legal term operated most extensively under European maritime law and international convention frameworks. In the United States, federal quarantine law historically governed the conditions under which vessels could enter port, with authority administered through the Marine Hospital Service and later the Public Health Service. Modern U.S. federal regulations addressing vessel entry and public health clearance do not routinely use the term pratique, though the underlying legal concept — conditional permission to engage with port and population pending health certification — persists in contemporary international maritime health regulations, including those administered under the International Health Regulations framework.