International Longshoremen's Association v. Ariadne Shipping Co., Ltd.

397 U.S. 195 · Decided March 9, 1970 · Supreme Court of the United States

At a glance

International Longshoremen's Association v. Ariadne Shipping Co., Ltd. was decided on March 9, 1970 unanimously (8–0). The Court reversed the lower court's decision. Justice William J. Brennan Jr. wrote the opinion of the Court. SCDB classifies its main issue as “Federal preemption of state court jurisdiction” in the Federalism area.

Read the opinion

• CourtListener (Free Law Project) — opinion text
• Library of Congress — official U.S. Reports scan

Case details

How the Justices voted

Full case caption

International Longshoremen's Association, Local 1416, AFL-CIO v. Ariadne Shipping Co., Ltd., et al.

SCDB identifiers: case 1969-056, docket 1969-056-01.

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Cases on the same legal provision: National Labor Relations Act

• H. K. Porter Co., Inc. v. National Labor Relations Board
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  398 U.S. 25Decided May 18, 19708–0Thurgood Marshall
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• National Labor Relations Board v. Gissel Packing Co., Inc.
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• Scofield v. National Labor Relations Board
  394 U.S. 423Decided April 1, 19697–1Byron R. White

Same Term, same area (Federalism)

• First National Bank in Plant City v. Dickinson
  396 U.S. 122Decided December 9, 19696–2Warren E. Burger
• Taggart v. Weinacker's, Inc.
  397 U.S. 223Decided March 9, 19706–2Per curiam

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Source: Supreme Court Database, 2026 Release 01 (data file dated September 8, 2026). Imported into CaseTrail November 5, 2026. Coverage: decisions from the 1946 through 2025 Terms. Methodology · Report an error