A navy (or maritime force) is a fleet of waterborne military vessels (watercraft). It is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions. It includes anything conducted by surface ships, amphibious ships, submarines, and seaborne aviation, as well as ancillary support, communications, training, and other fields; recent developments have included space-related operations. The strategic offensive role of a navy is projection of force into areas beyond a country's shores (for example, to protect sea-lanes, ferry troops, or attack other navies, ports, or shore installations). The strategic defensive purpose of a navy is to frustrate seaborne projection-of-force by enemies. The strategic task of the navy also may incorporate nuclear deterrence by use of nuclear missiles. Naval operations can be broadly divided between riverine and littoral applications (brown-water navy) and open-ocean applications (blue-water navy), although the distinction is more about strategic scope than tactical or operational division.
According to their own statements, the US Naval Research Laboratory is working to extract the carbon dioxide and produce hydrogen gas from the seawater; if everything works out fine for them, they will be able to convert the CO2 and hydrogen into hydrocarbons which will be used as jet fuel. Of course, the main interest [...]
Once flames brake loose, the close confinements of ships or subs suddenly transform into a hellish scene, claiming the lives of countless sailor. The U.S. Navy seeks to counter this deadly hazard by employing a mechanical firefighter among its ranks. Sophisticated, robust, and dexterous, this is a highly exciting project. Developed by the Naval Research Laboratory, the [...]
Big guns and big boats go well hand in hand most of the time, and the latest experimental weaponry unveiled by the US Navy, dubbed the Maritime Laser Demonstrator (MLD), will be sure to please any old sea dog. The diode-pumped solid-state high-energy laser weapon was developed by Northrop Grumman, and its capabilities were demonstrated [...]
The yellow and red flags were out; everybody was tense, waiting, and the gun range was clear. The a klaxon sounded. “System is enabled,” the voice on the speakerphone said. The people nearby could feel a slight shake in the floor. “Gun is fired,” the voice said. All this took place inside a huge cavernous [...]