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A teardrop hull is a submarine hull design which emphasizes submerged performance over surfaced performance. It was somewhat commonly used in the early stages of submarine development, but was gradually abandoned in the early 20th century in favour of designs optimized for high performance on the surface as a result of changes in operational doctrine.
USS Albacore (AGSS-569) is a unique research submarine that pioneered the American version of the teardrop hull form (sometimes referred to as an "Albacore hull") of modern submarines. The revolutionary design was derived from extensive hydrodynamic and wind tunnel testing, with an emphasis on underwater speed and maneuverability. [ 4 ]
Modern submarines are usually cigar-shaped. This design, already visible on very early submarines, is called a "teardrop hull". It is structurally efficient for withstanding external pressure, and significantly reduces the hydrodynamic drag on the sub when submerged, but decreases the sea-keeping capabilities and increases drag while surfaced.
They were the first production warships built with the teardrop-shape hull first tested on the experimental USS Albacore, and the first to combine the control room, attack center, and conning tower in the same space in the hull. They were of double hull design with 1.5-inch thick HY80 steel.
Known as "pig boats", or "boats", due to foul living quarters and unusual hull shape. F [15] 4: 1909: 1913: ... First nuclear submarine class with teardrop hull form.
The Skipjacks were the first class built with sail planes; they were later backfitted on the Barbels. This design feature would be repeated on all U.S. nuclear submarines until the improved Los Angeles-class submarine, the first of which was launched in 1988. The small "turtleback" behind the sail was the exhaust piping of the auxiliary diesel ...
The Soviet cargo ship Bratstvo collided with the Soviet submarine K-53 of the Victor I-class in position Latitude 35 deg 55 min North and Longitude 005 deg 00 min West, at the exit from the Gibraltar Strait in Alboran Sea, on 18 (as per ship's time) or 19 (as per submarine time) September 1984. [citation needed]
Overall, Nautilus resembled a modern research submarine, such as the NR-1, having a long teardrop hull. The design included an observation dome, somewhat similar in appearance, if not function, to the conning tower of later submarines. When surfaced, a fan-shaped collapsible sail, reminiscent of