If the Market Basket mess is a perfect example of what can go wrong with a family-owned company, then Boston Harbor Cruises' rising tide is a perfect example of what can go right. The company's roots date back to 1926, and its latest upward trajectory began in 2006 when members of the Nolan family bought out Modern Continental's majority stake. The construction contractor, best known for the Big Dig, had run aground amid significant financial problems. It was a good opportunity for the Nolans…
