Step right up and you’ll hear a tale, a tale of a grounded yacht, whose fire-extinguishing equipment might have led to a fateful trip (to its insurance carrier). It’s not often that you see a coverage dispute, in the amount of $300,000, make its way to the Supreme Court. But ahoy, matey. Last week, the court took up such a matter, as the case involves admiralty law, which is federal. If one looks back at the court, it has long had a large amount of admiralty cases to consider, with fights in the early dawn of the republic …