beause they are easer to useon muddy ground and easer to use on bumpy gravel, mud, sand etc ...
The air tanks on a submarine are typically located in the ballast tanks, which are distributed throughout the submarine's hull. These tanks are used to adjust the submarine's buoyancy by filling or emptying them with air or water.
Once petroleum is recovered, it is stored in various ways such as in underground storage tanks, above-ground storage tanks, or in refinery storage tanks. The petroleum is stored in these tanks until it is transported to distribution points or end-users for consumption.
Floating roof tanks are broadly divided into external floating roof tanks (usually called as floating roof tanks:FR Tanks) and internal floating roof types(IFR Tanks). IFR tanks are used for liquids with low flash-points(e.g. ATF, MS. gasolene, ethanol). These tanks are nothing but cone roof tanks with a floating roof inside which travels up and down along with the liquid level. This floating roof traps the vapor from low flash-point fuels. Floating roofs are supported with legs on which they rest. FR tanks do not have a fixed roof (it is open in the top) and has a floating roof only. Medium flash point liquids such as naphtha, kerosene, diesel, crude oil etc. are stored in these tanks. sealions
Auxiliary fuel tanks are additional fuel tanks installed on aircraft to increase their range or endurance. They are used to extend the aircraft's flight time and allow it to fly longer distances without the need for frequent refueling stops. These tanks can be mounted internally or externally on the aircraft, depending on the design and requirements.
You can float in bodies of water such as lakes, oceans, rivers, and pools. Additionally, some places offer sensory deprivation tanks or float tanks designed for therapeutic floating experiences.
The battle tanks have caterpillar tracks instead of tires because the tires cannot manage the weight of the tanks.When area increases pressure decreases .So when caterpillar tracks are used the pressure decreases and the battle tanks can move easily.
caterpillar tracks have large surface area than wheels. larger the surface area, smaller will be the pressure. Hence tanks and buldozers are fitted with caterpillar tracks
Battle tanks use tracks to spread their weight on soft ground. Tanks weigh 40+ tons; If they used wheels they would often get stuck. It's the same reason earth moving equipment (bulldozers) use tracks.
Caterpillar tracks are knobbly strips of metal or rubber, which wrap around the wheels of tanks, bulldozers and other off road vehicles. They stop the wheels from getting stuck in muddy or sandy ground. This is a very helpful technique.
Caterpillar tracks.
Battle tanks use caterpillar tracks to spread their heavy weight on soft ground. this prevents the sinking of land under the weight of the tank . ( as more the surface area less the pressure .)
Tanks don't use tyres - they use steel caterpillar tracks.
The machinegun and barbed wire were causing a stale-mate in WWI; tanks (being bullet proof and having tracks instead of wheels) were able to break that stale-mate.
Originally to break through enemy lines, since they were bullet proof and hand-grenade proof; and had tracks instead of wheels to traverse through mud with.
Weight distribution. Tracks - caterpillar and band tracks both - spread the weight over a much broader area, reducing ground pressure. Were they on tires, tanks would have much greater ground pressure, and would be much more prone to sinking into the ground.
They're heavily armoured and they have a cannon. Also their caterpillar wheels help when going over uneven ground.
Tracks have more traction because they cover more ground with no spaces in between. Wheeled vehicles have spaces between the wheels which allow the wheels to fall into holes/cracks/crevices/etc; allowing the wheeled vehicle to get stuck.