I know a good deal about the Bonhomme Richard. I know that it was originally a French merchant vessel called the Duc de Duras; that it was loaned to the fledgling US navy; and that it took part in the War of Independence. I know it was 152 feet long, weighed 998 tonnes and carried 42 guns. But at the time this replica was created in 1975, I knew only that it was my dad’s obsession.