In the case of Jennings et al. Plaintiffs in Error v The Brig Perseverance, et al., the Supreme Court was asked to decide whether a ship's captain had authority to sell goods from his vessel without permission from its owners. The plaintiffs argued that they were entitled to damages for their losses due to the sale of goods by Captain Thomas Smith without their consent or knowledge. However, Chief Justice John Marshall ruled against them and found that captains have implied authority under maritime law to sell cargo when necessary for repairs or supplies needed on long voyages at sea. He reasoned that this power is essential for ships' safety and should not be restricted by private contracts between owners and captains as it would limit a captain's ability to make decisions while at sea which could endanger lives aboard vessels.

In the case of Jennings et al. Plaintiffs in Error versus The Brig Perseverance, et al., Justice Samuel Chase delivered a dissenting opinion that argued against the majority's decision to grant judgment for the defendants. He asserted that under maritime law, if goods were damaged while on board a vessel due to negligence or improper care by its master or crew, then it was their responsibility to compensate those who had suffered losses as a result. Furthermore, he maintained that this principle applied even when there was no express contract between them and those whose property had been damaged; thus making it unnecessary for plaintiffs to prove any agreement with respect to such matters before they could be entitled to damages from the ship’s owners or operators. In conclusion, Justice Chase believed that since negligence and improper care had been demonstrated in this case - which resulted in damage being done - then compensation should have been awarded accordingly regardless of whether an explicit contract existed between parties involved.