Opinion of the Court
priate for this maritime tort context.
To begin, we agree with the manufacturers that a rule of mere foreseeability would sweep too broadly. See generally 1 Restatement (Third) of Torts: Liability for Physical and Emotional Harm §7, Comment j, at 82; 2 Restatement (Second) of Torts §395, Comment j, at 330. Many products can foreseeably be used in numerous ways with numerous other products and parts. Requiring a product manufacturer to imagine and warn about all of those possible uses—with massive liability looming for failure to correctly predict how its product might be used with other products or parts—would impose a difficult and costly burden on manufacturers, while simultaneously overwarning users. In light of that uncertainty and unfairness, we reject the foreseeability approach for this maritime context.
That said, we agree with the plaintiffs that the bare-metal defense ultimately goes too far in the other direction. In urging the bare-metal defense, the manufacturers contend that a business generally has “no duty” to “control the conduct of a third person as to prevent him from causing physical harm to another.” Id., §315, at 122. That is true, but it is also beside the point here. After all, when a manufacturer’s product is dangerous in and of itself, the manufacturer “knows or has reason to know” that the product “is or is likely to be dangerous for the use for which it is supplied.” Id., §388, at 301. The same holds true, we conclude, when the manufacturer’s product requires incorporation of a part that the manufacturer knows or has reason to know is likely to make the integrated product dangerous for its intended uses. As a matter of maritime tort law, we find no persuasive reason to distinguish those two similar situations for purposes of a manufacturer’s duty to warn. See Restatement (Third) of Torts: Products Liability §2, Comment i, p. 30 (1997) (“[W]arnings also may be needed to inform users and
