On April 10, 1912, the “unsinkable” RMS Titanic set sail from Southampton to New York. To book their passage, many of its wealthy seagoing passengers ascended the stone steps of Oceanic House, headquarters of the White Star Line in London.
The Titanic calamity spelled a long, slow death for the White Star Line, and Oceanic House, lavishly built in 1907, fell into decline. But now, after a circa $35 million restoration, the 33,000-square-foot building has been converted into seven luxury residences priced up to about $27.5...