The typical large cruise ship built since 1990 is powered by a “central station” electric plant—i.e., an array of four or more identical medium-speed diesel engines driving 60-hertz alternating-current electrical generators. This electrical plant supplies all …

Project Orion was a study conducted between the 1950s and 1960s by the United States Air Force, DARPA, and NASA for the purpose of identifying the efficacy of a starship directly propelled by a series of explosions of atomic bombs behind the craft—nuclear pulse propulsion.Early versions of this vehicle were proposed to take off from the ground; later …

EzineArticles.com allows expert authors in hundreds of niche fields to get massive levels of exposure in exchange for the submission of their quality original articles.

A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing.Ships are generally distinguished from boats, based on size, shape, load capacity, and purpose.Ships have supported exploration, trade, warfare, migration, colonization, and science.

There are two different types of low-speed engines that are commonly used: Two-stroke engines with a crosshead, and four-stroke engines with a regular trunk-piston. ... Roots-type superchargers were used for ship engines until the mid-1950s, however since 1955 they have been widely replaced by turbochargers. Usually, a two-stroke ship diesel ...

News for Hardware, software, networking, and Internet media. Reporting on information technology, technology and business news.

An electric motor is an electrical machine that converts electrical energy into mechanical energy.Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a …

Any vehicle used in or on water as well as underwater, including boats, ships, hovercraft and submarines, is a watercraft, also known as a water vessel or waterborne vessel. A watercraft usually has a propulsive capability (whether by sail, oar, paddle, or engine) and hence is distinct from a stationary device, such as a pontoon, that merely floats

Preorder What If? 2 (all US preorders eligible) and enter our contest for a chance to win a dedicated comic and What If blog post!

A container ship (also called boxship or spelled containership) is a cargo ship that carries all of its load in truck-size intermodal containers, in a technique called containerization.Container ships are a common means of commercial intermodal freight transport and now carry most seagoing non-bulk cargo.. Container ship capacity is measured in twenty-foot equivalent units (TEU).