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What else can I help you with?
Why submarines need a thick hull to go deeper?
Because thin metals will crush under extreme depth
Why are the windows of a submarine so small?
Submarines don't have windows, at least not any that are used for viewing outside of the hull while submerged. They are used in some submarines as bridge viewing windows, but they're subjected to ambient sea pressure when the boat submerges, not direct sea pressure like the hull is.
Why are submarines forbidden to sink beyond a limit?
The hull of the submarine will crush or give way if the pressure of the water is too much.
What are devices used by submarines to control density?
Allowing water into, or discharging it to replace by air, ballast-tanks built into the hull.
How can submarines with stand pressure?
Submarines withstand pressure through their robust hull design, which is typically made from strong materials like high-strength steel or titanium. The hull is shaped to distribute external pressure evenly, minimizing stress concentrations. Additionally, submarines are built with a double-hulled structure or reinforced sections to enhance structural integrity. Advanced engineering and thorough testing ensure that they can safely operate at great depths.
Why do submarines need thick strong wall?
Submarines require thick, strong walls to withstand the immense pressure exerted by water at great depths. As a submarine descends, the pressure increases significantly, which can lead to structural failure if the hull is not robust enough. Additionally, a strong hull helps protect against external threats, such as underwater debris or potential attacks. Overall, the integrity of the hull is crucial for the safety and operational effectiveness of the submarine.
Are submarines streamlined?
Absolutely - the modern submarine's teardrop shaped hull is a direct result of R&D that eventually led to the design that virtually all modern submarines use today.Cigar shaped hulls are also used, but like the teardrop hull, they also taper to some extent at the aft portion of the hull, in the Engineering spaces. This is to provide better water flow over the aft control surfaces (rudder and stabilizers). Submarines travel underwater much the same as airplanes do in air, and it is no coincidence they have similar hull shapes.The result of the modern submarine hull shape allows it to go much faster underwater than it can on the surface (a lot faster). In the past (WWII, e.g.) submarines were essentially surface vessels that had a limited submergence capability, and as such, they were designed to run much faster on the surface than underwater. With the advent of Nuclear Power and hull design changes, the submarine was transformed into a weapons system that could quickly gain the tactical advantage over surface vessels by being able capitalize on the speed given by the hull design.
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.
When were submarines first changed?
Submarines first underwent significant changes during World War I, when advancements in technology allowed for improved designs and capabilities. The introduction of diesel engines, more effective torpedoes, and better hull materials transformed submarines from primitive vessels into formidable naval weapons. This evolution continued throughout the 20th century, particularly during World War II, when submarines became crucial for naval warfare and strategic operations.
How submarines float on water?
The air trapped in the hull (this includes the buoyancy tanks) make it lighter than the water it displaces. The buoyancy tanks surround the main hull (where the people and machinery are), and can be flooded to allow the ship to sink. Refilling them with air (from compressed air tanks) allows it to return to the surface.
How does a submarines propeller shaft go through the hull and still leave the submarine watertight?
All submarine screw shafts have seals around the full length of the shaft hull penetration area to prevent water coming in. Shaft seals can be mechanical, hydraulic, etc., but regardless they serve the same purpose.
How long do submarines periscopes extend?
The new photonics masts are much different than the older style periscopes, so they only extend about 30 feet (they don't have a hull penetration). For traditional periscopes, usually around 30-40' above the sail/fairwater. Periscope depth for most modern submarines is about 65'.
