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Schematic view of the bow of a ship, showing: A the martingale stay, B the dolphin striker and C the bobstay. A dolphin striker (an older term for a martingale boom or simply a martingale; sometimes called a striker) is a small vertical or near vertical ancillary spar spanning between the bowsprit and martingale thereby redirecting the tension in the forward end of the martingale slightly more ...
The Portsmouth Naval Shipyard (PNS), often called the Portsmouth Navy Yard, is a United States Navy shipyard on Seavey's Island in Kittery, Maine, bordering Portsmouth, New Hampshire. The naval yard lies along the southern boundary of Maine on the Piscataqua River. Founded on June 12, 1800, PNS is the U.S. Navy's oldest continuously operating ...
In contrast to a downward pointing dolphin striker, a pelican striker is a small vertical spar or pyramid arrangement attached to the top of the crossbar joining the two bows of a catamaran. Its purpose is to resist the upward pressure on the centre of the crossbar where the forestay is attached.
The Harbor Defenses of Portsmouth was a United States Army Coast Artillery Corps harbor defense command. [1] It coordinated the coast defenses of Portsmouth, New Hampshire and the nearby Portsmouth Naval Shipyard in Kittery, Maine from 1900 to 1950, both on the Piscataqua River, beginning with the Endicott program.
The boat has a draft of 1.54 ft (0.47 m) with the daggerboard extended and 3 in (7.6 cm) with it retracted, allowing beaching or ground transportation on a trailer or car roof rack. [ 3 ] For sailing the design has hiking bars , a high freeboard and a molded splashguard in front of the mast.
Following is a list of dams and reservoirs in New Hampshire. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
Located within the Gulf of Maine watershed, the Great Bay Estuary is a drowned river valley composed of high-energy tidal waters, deep channels and fringing mudflats. The entire estuary extends inland from the mouth of the Piscataqua River between Kittery, Maine, and New Castle, New Hampshire through Little Bay into Great Bay proper at Furber Strait, a distance of 12 miles (19 km).
The World War I Memorial Bridge is a vertical-lift bridge that carries U.S. Route 1 across the Piscataqua River between Portsmouth, New Hampshire, and Badger's Island in Kittery, Maine, United States. The current bridge was opened in 2013, replacing a bridge of similar design that existed from 1923 to 2012.