OPA liability attaches without proof of negligence to the responsible party for a vessel or onshore or offshore facility from which oil is discharged, or which poses a substantial threat of discharge, into navigable waters or adjoining shorelines. Recoverable damages include removal costs, natural resource damages, real and personal property damage, lost profits and earning capacity, lost tax revenue, and net costs of increased public services, giving OPA a broader damages menu than CERCLA's response-cost focus.

Statutory liability caps apply based on vessel type, tonnage, or facility category, but those caps are forfeited where the discharge resulted from gross negligence, willful misconduct, or violation of an applicable federal safety, construction, or operating regulation — exceptions that turn many high-value spill cases into disputes over the responsible party's degree of fault despite the underlying strict-liability framework. The Oil Spill Liability Trust Fund provides a backstop source of compensation and a streamlined claims process for damages exceeding a responsible party's capped liability or where the responsible party is unknown or contests a claim.

Because the liability-cap exceptions can convert a capped strict-liability case into an uncapped negligence-driven exposure, the gross-negligence and regulatory-violation showing is often the single most consequential issue in a major spill case. A Juricratic simulation can model that binary outcome — capped versus uncapped liability — as a dial alongside the underlying damages estimate, letting a responsible party rehearse the full range of financial exposure scenarios.

OPA liability disputes typically arise after a vessel or facility oil discharge, with litigation focused on responsible-party identification, the applicability of a liability cap, whether any cap-forfeiting exception applies, and the scope of recoverable removal costs, natural resource damages, and third-party economic losses.