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  2. Twenty-foot equivalent unit - Wikipedia

    en.wikipedia.org/wiki/Twenty-foot_equivalent_unit

    The twenty-foot equivalent unit (abbreviated TEU or teu) is a general unit of cargo capacity, often used for container ships and container ports. [1] It is based on the volume of a 20-foot-long (6.1 m) intermodal container, a standard-sized metal box that can be easily transferred between different modes of transportation, such as ships, trains, and trucks.

  3. Intermodal container - Wikipedia

    en.wikipedia.org/wiki/Intermodal_container

    Intermodal container. A 40-foot-long (12.2 m) shipping container. Each of its eight corners has an essential corner casting for hoisting, stacking, and securing. Containers stacked on a large ship. An intermodal container, often called a shipping container, or cargo container, (or simply “container”) is a large metal crate designed and ...

  4. ISO 668 - Wikipedia

    en.wikipedia.org/wiki/ISO_668

    ISO 668 – Series 1 freight containers – Classification, dimensions and ratings is an ISO international standard which nominally classifies intermodal freight shipping containers, and standardizes their sizes, measurements and weight specifications. [1] The current version of the standard is the Seventh edition (2020), which integrates ...

  5. Speed of sound - Wikipedia

    en.wikipedia.org/wiki/Speed_of_sound

    The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. More simply, the speed of sound is how fast vibrations travel. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or 1 km in 2.91 s or one mile in 4.69 s.

  6. Flight level - Wikipedia

    en.wikipedia.org/wiki/Flight_level

    Therefore, a pressure altitude of 32,000 ft (9,800 m) is referred to as "flight level 320". In metre altitudes the format is Flight Level xx000 metres. Flight levels are usually designated in writing as FLxxx , where xxx is a two- or three-digit number indicating the pressure altitude in units of 100 feet (30 m).

  7. Tueller Drill - Wikipedia

    en.wikipedia.org/wiki/Tueller_Drill

    At 20 ft (6.1 m), the gun-wielder was able to shoot the charging knife attacker just as he reached the shooter. At shorter distances the knife wielder was always able to stab prior to being shot. [5] The "21-foot rule" has been implemented in some police department policies, and was the focus of a dissent in the excessive force case Buchanan v.

  8. Foot (unit) - Wikipedia

    en.wikipedia.org/wiki/Foot_(unit)

    0.3048 m. 30.48 cm. 304.8 mm. The foot (standard symbol: ft) [1][2] is a unit of length in the British imperial and United States customary systems of measurement. The prime symbol, ′, is commonly used to represent the foot. [3] In both customary and imperial units, one foot comprises 12 inches, and one yard comprises three feet.

  9. Rogue wave - Wikipedia

    en.wikipedia.org/wiki/Rogue_wave

    The wave was around 27.7 m (91 ft) high from peak to trough, and around 200 m (660 ft) long. [111] Their computer models also indicated that waves may have exceeded 40 metres (130 ft) in the eyewall. [112] Aleutian Ballad, (Bering Sea, 2005) footage of what is identified as an 18 m (60 ft) wave appears in an episode of Deadliest Catch. The wave ...