submerged structure
51USS Nautilus (SSN-571) — was the world s first operational nuclear powered submarine and the first vessel to complete a submerged transit across the North Pole.In July 1951 the US Congress authorized the construction of a nuclear powered submarine for the U.S. Navy,… …
52Military Affairs — ▪ 2009 Introduction Russia and Georgia fought a short, intense war in 2008, fueling global fears of a new Cold War. On August 7 Georgia launched an aerial bombardment and ground attacks against its breakaway province of South Ossetia.… …
53arctic — arctically, adv. /ahrk tik/ or, esp. for 7, /ahr tik/, adj. 1. (often cap.) of, pertaining to, or located at or near the North Pole: the arctic region. 2. coming from the North Pole or the arctic region: an arctic wind. 3. characteristic of the… …
54ship — shipless, adj. shiplessly, adv. /ship/, n., v., shipped, shipping. n. 1. a vessel, esp. a large oceangoing one propelled by sails or engines. 2. Naut. a. a sailing vessel square rigged on all of three or more masts, having jibs, staysails, and a… …
55Hippopotamus — Hippo redirects here. For other uses, see Hippo (disambiguation). This page is about the species Hippopotamus amphibius. For the genus Hippopotamus, see Hippopotamus (genus). Hippopotamus …
56Seamount — A seamount is a mountain rising from the ocean seafloor that does not reach to the water s surface (sea level), and thus is not an island. These are typically formed from extinct volcanoes, that rise abruptly and are usually found rising from a… …
57Shipwreck — A shipwreck can refer to a wrecked ship or to the event that caused the wreck, such as the striking of something that causes the ship to sink, the stranding of the ship on rocks, land or shoal, or the destruction of the ship at sea by violent… …
58Pontoon bridge — The U.S. 9th Army crosses the Rhine on a temporary steel treadway pontoon bridge, 1945. Carries Pedestrian, automobile, truck Span range Short to long …
59Paradigm City — is the main setting of the televised anime series The Big O . Located next to a sea and a vast desert wasteland, the city is maintained and controlled by the monopolistic Paradigm Corporation. The city is divided into the higher income population …
60Greater Underwater Propulsion Power Program — The Greater Underwater Propulsion Power Program (GUPPY) was initiated by the United States Navy after World War II to improve the submerged speed, maneuverability, and endurance of its submarines. (The Y in the acronym was added to increase… …
