KNOT

10 definitions found across Law Mind sources

KNOTAuthored
The Law Mind • 803 words
Definition
In maritime and admiralty law, a knot is a unit of speed equal to one nautical mile per hour. The term derives from the practice of measuring a vessel's speed with a log-line — a rope divided into measured segments, each segment called a knot, that was paid out over the stern while a sandglass ran. The number of knots that ran off the reel in a fixed interval (typically thirty seconds or one minute) indicated how many nautical miles per hour the ship was traveling. A vessel traveling at eight knots covers eight nautical miles in one hour. The legal significance of the term is narrow but precise: in admiralty proceedings, charter parties, collision cases, and marine insurance disputes, references to a vessel's speed, warranted speed, or maximum speed are expressed in knots. Misreading the unit — treating it as equivalent to statute miles per hour — produces material error in any calculation of distance traveled, estimated position, or time of arrival. ---
Common Language
Modern common usage (Wiktionary): A looping of string or flexible material that cannot be untangled without passing one or both ends through its loops; also, informally, a difficult situation or tangle. Historical common usage (Webster's 1913): "A fastening together of the parts or ends of one or more threads, cords, ropes, etc., by any one of various ways of tying or entangling"; also figuratively, "a bond of union; a connection; a tie." The common meaning — a physical fastening or tangle — is entirely distinct from the legal and nautical meaning. In legal documents touching admiralty or maritime matters, knot always denotes a unit of speed, never a physical fastening. A researcher encountering the word in a charter party or collision report should not apply the ordinary physical sense. ---
Why It Matters in Research
The term appears almost exclusively in admiralty, maritime, and shipping law contexts. Researchers working in this area should be alert to several practical points. First, speed warranties in charter parties and vessel specifications routinely express guaranteed or maximum speed in knots. A vessel warranted to maintain "twelve knots" is promising a specific rate of travel; breach of that warranty in a time charter can directly affect freight calculations and damages. Second, in collision and allision cases, a vessel's speed in knots at the time of impact is often a central factual issue — both for negligence analysis and for apportioning fault under admiralty rules. Historical records, log books, and testimony in such cases will use knots as the operative unit. Third, older admiralty materials (pre-twentieth century) may describe the measurement method in detail — the log-line, the reel, the sandglass — in ways that can be confusing to researchers unfamiliar with the underlying seamanship. Understanding that the term is derived from the physical marks on the log-line clarifies why the word migrated from physical object to unit of measurement. Fourth, the term does not appear in general common law, criminal law, or equity materials. Its presence in a document is itself a signal that the document concerns maritime or naval affairs. ---
Historical Dictionary Support
Black's Law Dictionary (both the 1st and 2nd editions) defines knot in consistent and nearly identical terms, crediting Webster for the explanatory detail. Both editions explain the log-line mechanism and make clear that knots measure speed in miles per hour — an unusual move for a legal dictionary, reflecting how technical nautical vocabulary required grounding for non-specialist legal readers. Rapalje & Lawrence's entry is fragmentary in the available text, appearing in the middle of a nautical definition that breaks off, preceded by the unrelated entry for KNAVESHIP. The truncation suggests a printing or indexing artifact in the source material; the entry likely paralleled Black's in substance. Anderson's Dictionary of Law does not define knot directly, redirecting readers to the entry for MILE — a cross-reference that implicitly confirms the unit-of-measurement sense is the legally operative one. None of the historical dictionaries address knot in any sense other than the nautical speed measurement. This uniformity is instructive: the legal dictionaries of the nineteenth and early twentieth centuries treated the term as unambiguously a term of maritime art, requiring explanation for land-trained lawyers but not subject to interpretive dispute. ---
Jurisdictional Note
Knot as a legal term of art functions identically across common law admiralty jurisdictions. U.S. admiralty law, English maritime law, and international shipping practice all use the knot as the standard unit of vessel speed. No meaningful jurisdictional variation affects the definition. ---
Related Terms
ADMIRALTY LAW — MARITIME LAW — NAUTICAL MILE — LOG-LINE — CHARTER PARTY — SPEED WARRANTY — COLLISION (admiralty) — MARINE INSURANCE — MILE
KNOTmain
Black's Law Dictionary • 1891
In seamen's language, a “knot” is a division of the log-line serving to meas- ure the rate of the vessel's motion. The number of knots which run off from the reel in half a minute shows the number of miles the vessel sails in an hour. Hence when a ship der instituted by Henry IV., and revived by goes eight miles an hour she is said to go George I. They are so called from the cere- mony formerly observed of bathing the night before their creation. “eight knots.” Webster.
KNOTmain
Black's Law Dictionary (2nd Ed.) • 1910
In seamen’s language, a “knot” is a division of the log-line serving to measure the rate of the vessel’s motion. The number of knots which run off from the reel in half a minute shows the number of miles the vessel sails in an hour. Hence when a ship goes eight miles an hour she is said to go “eight knots.” Webster.
KNOTmain
Rapalje & Lawrence • 1888
(715) KNAVE, (imports dishonesty). 5 Pick. (Mass.) of knighthood. See Sir N. H. Nicholas' History 244. KNAVESHIP.-A portion of grain, given to a mill-servant from tenants who were bound to grind their grain at such mill. See THIRLAGE. In nautical parlance, a divi-
KNOTn.
Websters Unabridged Dictionary (1913) • 1913
A fastening together of the pars or ends of one or more threads, cords, ropes, etc., by any one of various ways of tying or entangling. A lump or loop formed in a thread, cord, rope. etc., as at the end, by tying or interweaving it upon itself. An ornamental tie, as of a ribbon. A bond of union; a connection; a tie. "With nuptial knot." Shak. Ere we knit the knot that can never be loosed. Bp. Hall. Something not easily solved; an intricacy; a difficulty; a perplexity; a problem. Knots worthy of solution. Cowper. A man shall be perplexed with knots, and problems of business, and contrary affairs. South. A figure the lines of which are interlaced or intricately interwoven, as in embroidery, gardening, etc. "Garden knots." Bacon. Flowers worthy of paradise, which, not nice art In beds and curious knots, but nature boon Poured forth profuse on hill, and dale, and plain. Milton. A cluster of persons or things; a collection; a group; a hand; a clique; as, a knot of politicians. "Knots of talk." Tennyson. His ancient knot of dangerous adversaries. Shak. Palms in cluster, knots of Paradise. Tennyson. As they sat together in small, separate knots, they discussed doctrinal and metaphysical points of belief. Sir W. Scott. A portion of a branch of a tree that forms a mass of woody fiber running at an angle with the grain of the main stock and making a hard place in the timber. A loose knot is generally the remains of a dead branch of a tree covered by later woody growth. A knob, lump, swelling, or protuberance. With lips serenely placid, felt the knot Climb in her throat. Tennyson. A protuberant joint in a plant. The point on which the action of a story depends; the gist of a matter. [Obs.] I shoulde to the knotte condescend, And maken of her walking soon an end. Chaucer. See Node. A division of the log line, serving to measure the rate of the vessel's motion. Each knot on the line bears the same proportion to a mile that thirty seconds do to an hour. The number of knots which run off from the reel in half a minute, therefore, shows the number of miles the vessel sails in an hour. Hence: A nautical mile, or 6080.27 feet; as, when a ship goes eight miles an hour, her speed is said to be eight knots. A kind of epaulet. See Shoulder knot. A sandpiper (Tringa canutus), found in the northern parts of all the continents, in summer. It is grayish or ashy above, with the rump and upper tail coverts white, barred with dusky. The lower parts are pale brown, with the flanks and under tail coverts white. When fat it is prized by epicures. Called also dunne.
KNOTv.
Websters Unabridged Dictionary (1913) • 1913
To tie in or with, or form into, a knot or knots; to form a knot on, as a rope; to entangle. "Knotted curls." Drayton. As tight as I could knot the noose. Tennyson. To unite closely; to knit together. Bacon. To entangle or perplex; to puzzle. [Obs. or R.]
KNOTv.
Websters Unabridged Dictionary (1913) • 1913
To form knots or joints, as in a cord, a plant, etc.; to become entangled. Cut hay when it begins to knot. Mortimer. To knit knots for fringe or trimming. To copulate; -- said of toads. [R.] Shak.
knotnoun
Wiktionary (English) • 2026
Wiktionary contributorsCC BY-SA 4.0 • via Kaikki
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A looping of a piece of string or of any other long, flexible material that cannot be untangled without passing one or both ends of the material through its loops. | A tangled clump of hair or similar. | A maze-like pattern. | A non-self-intersecting closed curve in (e.g., three-dimensional) space that is an abstraction of a knot (in sense 1 above). | A difficult situation. | The whorl left in lumber by the base of a branch growing out of the tree's trunk. | Local swelling in a tissue area, especially skin, often due to injury. | A tightened and contracted part of a muscle that feels like a hard lump under the skin. | A protuberant joint in a plant. | Any knob, lump, swelling, or protuberance. | The swelling of the bulbus glandis in members of the dog family, Canidae. | The point on which the action of a story depends; the gist of a matter. | A node (point at which the lines of a funicular machine meet from different angular directions) | A kind of epaulet; a shoulder knot. | A group of people or things. | A bond of union; a connection; a tie. | A unit of speed, equal to one nautical mile per hour. | A unit of indicated airspeed, calibrated airspeed, or equivalent airspeed, which varies in its relation to the unit of speed so as to compensate for the effects of different ambient atmospheric conditions on aircraft performance. | A nautical mile. | The bulbus glandis.
knotverb
Wiktionary (English) • 2026
Wiktionary contributorsCC BY-SA 4.0 • via Kaikki
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To form into a knot; to tie with a knot or knots. | To form wrinkles in the forehead, as a sign of concentration, concern, surprise, etc. | To unite closely; to knit together. | To entangle or perplex; to puzzle. | To form knots. | To knit knots for a fringe.
knotnoun
Wiktionary (English) • 2026
Wiktionary contributorsCC BY-SA 4.0 • via Kaikki
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One of a variety of shore birds; red-breasted sandpiper (variously Calidris canutus or Tringa canutus).

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