Definition
A term of art in maritime insurance law describing the condition of a vessel that is stationary, docked, or harbored rather than actively underway on a voyage. Insurance policies covering marine risks frequently distinguish between coverage applicable "on the voyage" and coverage applicable while the vessel is "lying up" — that is, at rest in port or at anchor. A policy that extends coverage to both conditions protects the vessel across its full operational cycle, including periods of loading, unloading, layover, and anchorage.
The practical significance of the phrase is jurisdictional in the interpretive sense: whether a vessel in a particular condition — being towed, shifting berths, or awaiting cargo — qualifies as "lying up" or remains "on the voyage" determines which coverage clause applies, and therefore whether a loss is covered at all.
Common Language
Modern common usage (Wiktionary): "Lying up" in general English means resting, being concealed, or remaining inactive. A person or animal "lies up" when it retreats to a resting place out of activity or view.
Historical common usage (Webster's 1913): To "lie up" means to refrain from work or activity; to remain at rest; often used of persons confined to bed through illness.
The legal meaning is narrower and technical. In marine insurance, "lying up" describes not mere inactivity but a defined operational state of a vessel — one with genuine coverage consequences. The common sense of stillness or rest is directionally correct but entirely misses the contractual and interpretive weight the phrase carries in insurance policy construction.
Why It Matters in Research
This term is almost exclusively a creature of marine insurance policy language and the case law construing it. Researchers working in historical maritime law sources should expect to encounter it in two contexts: first, in printed insurance policy forms where it appears as a standard clause modifier, and second, in reported decisions turning on whether a particular vessel state fell within or outside the "lying up" description at the moment of loss.
The critical trap for historical researchers is boundary ambiguity. Bouvier cites a case in which a vessel being towed into harbor was held to fall within the "lying up" clause — a result that might seem counterintuitive, since a vessel under tow is in motion. This signals that "lying up" was interpreted functionally (is the vessel in active navigation for voyage purposes?) rather than literally (is the vessel physically stationary?). Researchers reviewing historical loss disputes must therefore attend closely to the factual posture of the vessel and the specific policy language at issue, not simply to whether the ship was moving.
The term does not appear to have migrated significantly into modern statutory maritime law or into contemporary insurance regulatory frameworks under that exact phrasing. Modern marine insurance policies tend to use more granular terminology (e.g., "port risk," "lay-up" warranties, "navigation limits"). Researchers working with 19th or early 20th century marine insurance materials will encounter "lying up" as operative language; those working with modern materials should cross-reference "lay-up" and "port risk" as functional equivalents.
There is no meaningful connection between this marine insurance term and the partnership/LLC "winding up" concept despite superficial verbal overlap. Researchers should not import dissolution-of-entity concepts into marine insurance analysis.
Historical Dictionary Support
Bouvier's Law Dictionary provides the sole historical dictionary treatment identified for this term, and it is characteristically spare: a single sentence with a case citation establishing that a vessel under tow into harbor falls within the "lying up" clause of a marine insurance policy.
The brevity is informative. Bouvier treats "lying up" as definitionally self-evident — requiring legal gloss only at the boundary. The doctrinal action was never in defining what the center case looked like (a ship at anchor in port is obviously "lying up") but in policing the edges: towing, shifting berths, emergency anchorage, vessels in drydock. The historical dictionaries offer limited help with those edge cases; the case law itself must do the work.
What the historical dictionary record does not address: the interaction between "lying up" clauses and seaworthiness warranties; the effect of unauthorized deviation on lying-up coverage; or the treatment of vessels in drydock versus vessels merely at anchor. Researchers should not assume Bouvier's silence on these points means the issues were uncontested.
Jurisdictional Note
Marine insurance in the 19th century was shaped heavily by English admiralty practice, and American courts frequently looked to English precedent in construing policy language. The cited authority (5 Robt. 478) is a New York maritime court report, suggesting American courts were independently developing this body of doctrine. Researchers should not assume English and American interpretations were uniform on boundary cases.