Summary

William Strong The Pennsylvania — Opinion of the Court

She was constantly changing her position. It was her duty, therefore, to blow a foghorn, and not to ring a bell. By ringing a bell, as she did, she gave a false signal, and, so far as she could, assured all approaching vessels that she was not under way. There is some evidence that a bell can be heard as far as can a foghorn, and some that it can be heard farther. On the other hand there is evidence that a foghorn can be heard farthest. However this may be the bark had no right to substitute any equivalent for the signal required by the navigation rules.
Source: Wikisource

William Strong The Pennsylvania — Opinion of the Court

It is a well-known fact that in some states of the atmosphere a foghorn can be heard at much greater distances than in others. How far it could have been heard when this collision occurred can never be known. Nor can it be known what precautions the steamer would have adopted if the true and proper signal had been given her. Hence, it appears to us the bark has not proved that her failure to obey the shipping regulations was not a concurrent cause of the injury she received; and, consequently, as both vessels were in fault, the damages, according to the admiralty rule, should be divided.
Source: Wikisource

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