The Merrimac was a Supreme Court case that dealt with the issue of maritime law. The case involved a dispute between the owners of the Merrimac, a steamship, and the owners of the schooner, the William H. Webb. The Merrimac had collided with the Webb, causing damage to the Webb. The Webb's owners sued the Merrimac's owners for damages, claiming that the Merrimac had been negligent in its navigation. The Supreme Court ruled in favor of the Webb's owners, finding that the Merrimac had been negligent in its navigation and that the Webb's owners were entitled to damages. The Court held that the Merrimac had failed to exercise reasonable care in navigating the waters, and that the Webb's owners were entitled to damages for the damage caused by the collision. The Court also held that the Merrimac's owners were liable for the damages caused by the collision, regardless of whether the collision was caused by the negligence of the Merrimac's captain or crew. This ruling established the principle of strict liability in maritime law, which holds that a vessel's owners are liable for any damage caused by the vessel, regardless of the cause of the damage. The Merrimac case is an important precedent in maritime law, as it established the principle of strict liability and clarified the rights and responsibilities of vessel owners in the event of a collision. The case also established the principle that a vessel's owners are liable for any damage caused by the vessel, regardless of the cause of the damage.

In The Merrimac, the Supreme Court was asked to decide whether a vessel that had been sold in good faith by its owner could be seized and forfeited for violation of revenue laws. In an 8-1 decision, the court held that it could not. Justice Field delivered the dissenting opinion arguing that when a vessel is used to violate revenue laws, it should be subject to forfeiture regardless of who owns or operates it at any given time. He argued that allowing vessels which have been sold in good faith to escape forfeiture would encourage fraud and undermine public policy as well as discourage respect for law enforcement officers tasked with enforcing such laws. Furthermore, he asserted that if owners were allowed to avoid responsibility simply by selling their vessels before they are caught violating revenue laws then this would create an incentive for them to do so rather than comply with existing regulations.