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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 ...
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 ).
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.
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).
Figurehead of HMS Warrior, Portsmouth; City shown: Portsmouth: Horizontal resolution: 240 dpi: Vertical resolution: 240 dpi: Software used: Adobe Photoshop Lightroom Classic 12.3 (Macintosh) File change date and time: 21:19, 18 May 2023: Exposure Program: Aperture priority: Exif version: 2.31: Date and time of digitizing: 10:46, 23 April 2023 ...
Dolphin was the penultimate design in the V-boat series. With a length of 319 ft (97 m) and a displacement only a little more than half that of the previous three large cruiser submarines (1,718 long tons (1,746 t) surfaced, 2,240 long tons (2,276 t) submerged), Dolphin was clearly an attempt to strike a medium between those latter submarines and earlier S-class submarines, which were little ...