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Blockade

Definitions from Case Law · United States Supreme Court

Definitions from Case Law

From 16 U.S. 183 - Olivera v. The Union Insurance Company · 1818Most cited · 26 citing opinions

modern usage as to neutral vessels in port

That a belligerent may lawfully blockade the port, of his enemy is admitted. But it is also admitted that this blockade does not, according to modern usage extend to a neutral vessel, found in port, nor prevent her coming out with the cargo which was on board when the blockade was instituted. If, then, such a vessel be restrained from proceeding on her voyage by the blockading squadron, the restraint is unlawful.

How the Supreme Court has restated “Blockade”

18081810182018301840185018601864 most cited: 16 U.S. 183 - Olivera v. The Union Insurance Company (1818)
first stateddeparted

Each Supreme Court definition of “Blockade,” sized by how often later courts cited it. “Change” is measured by wording overlap with earlier definitions — a rough signal, not a semantic judgment.

How often courts cite the cases defining “Blockade”

1800185019001950200020307

Court decisions citing the 5 opinions that defined “Blockade” — 63 in all, by decade. Counts are citations to the defining cases as a whole, not verified uses of the term. The dip in the most recent years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the latest years.

All 5 definitions, chronological · 1808–1864

  1. Vattel, b. 3. s. 177. says, 'All commerce is entirely prohibited with a besieged town. If I lay siege to a place, or only form the blockade, I have a right to hinder any one from entering, and to treat as an enemy whoever attempts to enter the place, or carry any thing to the besieged, without my leave.

    Vattel's rule

  2. While this order was in force, a neutral vessel might lawfully sail for a blockaded port, knowing it to be blockaded, and being found sailing towards such port, would not constitute an attempt to break the blockade, until she should be warned off.

    West Indies — qualified rule requiring warning off

  3. A blockade is just as much violated by a vessel passing outwards as inwards. A blockade is a sort of circumvallation round a place, by which all foreign connection and correspondence is, as far as human force can effect it, to be entirely cut off. It is intended to suspend the entire commerce of the place, and a neutral is no more at liberty to assist the traffic of exportation than of importation.

  4. 1864·69 U.S. 135 - The Circassian[p65]· cited 10×

    The object of blockade is to destroy the commerce of the enemy, and cripple his resources by arresting the import of supplies and the export of products. It may be made effectual by batteries ashore as well as by ships afloat.