New Hampshire has only a 30 kilometre stretch of coastline, and New Castle lies just east of the beautiful city of Portsmouth, overlooking the Piscataqua River. Fort Constitution, situated on the island, was a British stronghold successfully raided by rebels in 1774. The nearby Isles of Shoals were named for the many fish that could be caught there rather than for possessing shallow water, and make for a fascinating cruising area. The marina is set in a sheltered inlet of Little Harbor. Attractions include trolley trips to historic Portsmouth and numerous charity fishing tournaments.