Definition
A toll or duty levied on vessels for the privilege of anchoring or resting in a port or harbor. The term carries a dual meaning: it refers both to the right to demand the payment (a sovereign or manorial prerogative) and to the money itself when actually paid. In English law, keelage was one of several port-related dues historically claimed by the Crown or by lords holding admiralty jurisdiction over particular harbors.
Common Language
Modern common usage (Wiktionary): The right of demanding a duty or toll for a ship entering port; also, the duty or toll charged.
Historical common usage (Webster's 1913): The right of demanding a duty or toll for a ship entering a port; also, the duty or toll.
The common and legal definitions are essentially identical here, as the term has no meaningful life outside the legal and maritime context. The Webster's 1913 entry itself cites Bouvier and Wharton, confirming that the word passed into general dictionaries directly from legal usage rather than the reverse.
Why It Matters in Research
Keelage appears almost exclusively in historical legal materials — English admiralty law, port customs records, and treatises on the Crown's maritime prerogatives. Researchers will encounter it primarily when tracing the development of port authority, harbor dues, or the legal basis for toll-collection at early modern English ports. It is functionally extinct as an operative legal term in modern Anglo-American law, having been absorbed into statutory port and harbor fee regimes.
The term is a useful index term when searching historical English admiralty materials. Burrill's citation to Hale's De Jure Maris (pars 2, c. 6) is the most substantive historical legal treatment and the appropriate starting point for any serious research into the doctrinal basis of the right. Sir Matthew Hale's De Jure Maris et Brachiorum ejusdem (c. 1670s, circulated in manuscript before later publication) remains the foundational authority on Crown rights over navigable waters and ports, and keelage sits within that framework of prerogative dues.
Researchers working in colonial American records should note that keelage-type port duties were sometimes imposed by colonial legislatures or proprietors and described under this or similar terminology. The underlying concept — a fee for use of a harbor bottom — persisted even when the word did not.
Historical Dictionary Support
The five source dictionaries agree on the core definition with minimal variation. The point of minor divergence is instructive: Black's (both editions) and Burrill emphasize the right to demand the toll, framing keelage as a legal entitlement; Rapalje & Lawrence and Bouvier also define it as the money paid, making the dual nature explicit. This is not a real disagreement — all sources acknowledge both dimensions — but the framing reflects the distinction between the prerogative right and its monetary exercise, which matters in historical litigation over port authority.
Rapalje & Lawrence attribute the term to Termes de la Ley, the early English legal glossary, placing its pedigree firmly in the older common-law vocabulary of ports and maritime custom. Burrill provides the most technically precise entry, identifying the Latin form killagium and citing Hale directly — the only source among the five to do so. This makes Burrill the most useful starting point for primary source navigation on this term.
None of the historical dictionaries elaborate on how keelage was assessed, disputed, or enforced. Researchers needing that operational history must go directly to Hale and to the records of English admiralty courts.
Jurisdictional Note
Keelage is a term of English law and does not appear as a recognized category in the statutory law of any American jurisdiction. American port dues are governed by federal and state statutory schemes and are not organized around the historical English prerogative categories. Researchers encountering the term in American historical sources — particularly colonial-era port records or early 19th-century admiralty pleadings — should treat it as carrying its English meaning by adoption rather than as a term of domestic American legal art.