How thick is a submarine pressure hull?

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Reggie Kiehn asked a question: How thick is a submarine pressure hull?
Asked By: Reggie Kiehn
Date created: Thu, Jun 10, 2021 8:01 AM
Date updated: Wed, Jan 19, 2022 8:40 AM

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Those who are looking for an answer to the question «How thick is a submarine pressure hull?» often ask the following questions:

⚓ What happen if the hull of submarine ruptured?

All modern submarines are "dual hull" constructed. What you see on the surface is the outer hull, or "superstructure". The inner hull, where the main systems and crew are, is protected by the outer hull. Damage severity of either the outer or inner hulls depends on the boat's depth at the time. If deep enough, it doesn't take much damage to the hull, as sea pressure will be virtually unstoppable, even with the quick-reaction damage control skills of a submarine crew. However, if sea pressure isn't a factor and the flooding can be controlled, then it's possible to survive such a casualty. Again, it depends on the severity of the hull breach, and the depth at the time. Several modern submarines (my old boat included) have survived underwater collisions which produced severe damage.

⚓ How thick is the metal on a submarine?

With more advanced steels and a smaller pressure hull, its pressure hull’s skin was only 2.5 inches (64mm) thick. A mock-up of the pilot’s sphere: Military submarines, which rarely dive below 3,000 feet (1000 meters), do not have hulls that thick.

⚓ How thick is the hull of a ship?

  • While the hull plate, or skin, of a ship does vary in thickness from typically 6mm, a common scantling for yachts and even destroyers, and is the thinnest plate that can be practicably worked and welded, and still have some thickness reserve to cope with corrosion, to, say, 20mm, the approximate bottom thickness of tankers similar to the Exxon ...

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How thick is a submarine pressure hull? Making the hull. 4 Steel plates, approximately 2-3 in (5.1-7.6 cm) thick, are obtained from steel manufacturers. These plates are cut to the proper size with acetylene torches. 5 The cut steel plates are moved between large metal rollers under tons of pressure. Why do submarines not get crushed?

Figure 1: Photograph of USS Balao. The calculations are shown in Figure 2. The calculations agree with the pressure hull thickness actually used on this submarine. I have found a number of discussions on the Balao's operating depth ( example ). Richard O'Kane operated USS Tang down to 600 feet during sea trials.

Pressure hull. Inside the outer hull there is a strong hull, or pressure hull, which actually withstands the outside pressure and has normal atmospheric pressure inside. The pressure hull is generally constructed of thick high-strength steel with a complex structure and high strength reserve, and is separated with watertight bulkheads into several compartments.

With more advanced steels and a smaller pressure hull, its pressure hull’s skin was only 2.5 inches (64mm) thick. A mock-up of the pilot’s sphere: Military submarines, which rarely dive below 3,000 feet (1000 meters), do not have hulls that thick.

(Modern Trident missile submarines have a forty three foot diameter pressure hull) This necessitates a thicker hull where the alloys used and the shaping process are constant. Once again, the hull design process is one of compromise where interplaying factors are balanced against one another until a final design with an estimate of test depth is reached.

(Submarine Museum records) Plating Pressure Thickness Hull Diameter Class (ins) (ft-ins) L 0.5 15-7 O, P, R 0.875 16-1% "River" 0.625 18-5 Porpoise 0.625 17-2 Sunfish 0.375 14-11 1940S 0.55 14-11 T 0.625 16-3 U 0.5 16-3 V 0.625 16-3 A 0.85 16-0 There is still some uncertainty in the understanding of design methods used in calculating the strength of pressure hulls before World War II.

In conclusion, the most reliable measurement for the loss of hull plate thickness is 5.8mm in 100 years, or a rate of 0.058 mm/year or 58 μm/year. This is a loss of 61% of the original conning tower thickness and 52% of the original hull plate thickness. Note that the measurements only include the exposed portion of the hull of A7.

How thick is a submarine hull? Making the hull. 4 Steel plates, approximately 2-3 in (5.1-7.6 cm) thick, are obtained from steel manufacturers. These plates are cut to the proper size with acetylene torches. 5 The cut steel plates are moved between large metal rollers under tons of pressure.

Although such an alloy is expensive, it is light, strong and corrosion resistant, three factors which are important in the material out of which a pressure hull is made. The pressure hull is designed to go to depths of 5000m before collapsing. The depth we will be working at is 3000m, which means that the pressure hull is very safe.

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Can anyone buy a submarine?

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