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Maritime Signalling
International maritime signal flags are various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals. Various navies have flag systems with additional flags and codes, and other flags are used in special uses, or have historical significance. Usage There are various methods by which the flags can be used as signals: * A series of flags can spell out a message, each flag representing a letter. * Individual flags have specific and standard meanings;AB Nordbok. "The Lore of Ships", page 138. New York: Crescent Books, 1975. for example, diving support vessels raise the "A" (alfa) flag indicating their inability to move from their current location because they have a diver underwater and to warn other vessels to keep clear to avoid endangering the diver(s) with their propellers. * One or more flags form a code word whose meaning can be looked up in a code book held by both parties. An example is the Popham nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Japanese Flags
This is a list of Japanese flags, past and present. Historically, each ''daimyō'' had his own flag. ''(See sashimono and uma-jirushi.)'' National flags Imperial flags Governmental flags Military flags Self-Defense Force and Imperial Army/Navy Japan Coast Guard Historical flags Daimyō Flags Flags attributed to Japanese Daimyo in the Kaei period (1848-54). File:Flag of the Arima Lords of Kurume in Chikugo Province (A).svg, Arima clan of Kurume Domain (A) File:Flag of the Arima Lords of Kurume in Chikugo Province (B).svg, Arima clan of Kurume Domain (B) File:Flag of the Arima Lords of Kurume in Chikugo Province (C).svg, Arima clan of Kurume Domain (C) File:Flag of the Asano Lords of Hiroshima in Aki Province (A).svg, Asano clan of Hiroshima Domain (A) File:Flag of the Asano Lords of Hiroshima in Aki Province (B).svg, Asano clan of Hiroshima Domain (B) File:Flag of the Asano Lords of Hiroshima in Aki Province (C).svg, Asano clan of Hiroshima Domain (C) File:Flag of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICS Echo
ICS may refer to: Computing * Image Cytometry Standard, a digital multidimensional image file format used in life sciences microscopy * Industrial control system, computer systems and networks used to control industrial plants and infrastructures * Information and computer science, the combined field of informatics and computing * Internet chess server, an external server that provides the facility to play, discuss, and view chess over the Internet * Internet Connection Sharing, a feature in Microsoft operating systems since the advent of Windows 98 Second Edition * .ics, a filename extension for iCalendar files * Android Ice Cream Sandwich, the codename for version 4.0 of the Android operating system Education * Donald Bren School of Information and Computer Sciences, Irvine, California, United States * Graduate School of International Corporate Strategy, Tokyo, Japan * Indian Central School, Singapore * Institute for Christian Studies, Toronto, Ontario * Institute of Classi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetic Declination
Magnetic declination (also called magnetic variation) is the angle between magnetic north and true north at a particular location on the Earth's surface. The angle can change over time due to polar wandering. Magnetic north is the direction that the north end of a magnetized compass needle points, which corresponds to the direction of the Earth's magnetic field lines. True north is the direction along a meridian towards the geographic North Pole. Somewhat more formally, Bowditch defines variation as "the angle between the magnetic and geographic meridians at any place, expressed in degrees and minutes east or west to indicate the direction of magnetic north from true north. The angle between magnetic and grid meridians is called grid magnetic angle, grid variation, or grivation." By convention, declination is positive when magnetic north is east of true north, and negative when it is to the west. '' Isogonic lines'' are lines on the Earth's surface along which the declination ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morse Code
Morse code is a telecommunications method which Character encoding, encodes Written language, text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one of the early developers of the system adopted for electrical telegraphy. International Morse code encodes the 26 ISO basic Latin alphabet, basic Latin letters to , one Diacritic, accented Latin letter (), the Arabic numerals, and a small set of punctuation and procedural signals (Prosigns for Morse code, prosigns). There is no distinction between upper and lower case letters. Each Morse code symbol is formed by a sequence of ''dits'' and ''dahs''. The ''dit'' duration can vary for signal clarity and operator skill, but for any one message, once the rhythm is established, a beat (music), half-beat is the basic unit of time measurement in Morse code. The duration of a ''dah'' is three times the duration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distress Signal
A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance. A distress signal indicates that a person or group of people, watercraft, aircraft, or other vehicle is threatened by a serious or imminent danger and requires immediate assistance.Aeronautical Information Manual U.S. Federal Aviation Administration, 2016 Use of distress signals in other circumstances may be against local or . An [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICS Charlie
ICS may refer to: Computing * Image Cytometry Standard, a digital multidimensional image file format used in life sciences microscopy * Industrial control system, computer systems and networks used to control industrial plants and infrastructures * Information and computer science, the combined field of informatics and computing * Internet chess server, an external server that provides the facility to play, discuss, and view chess over the Internet * Internet Connection Sharing, a feature in Microsoft operating systems since the advent of Windows 98 Second Edition * .ics, a filename extension for iCalendar files * Android Ice Cream Sandwich, the codename for version 4.0 of the Android operating system Education * Donald Bren School of Information and Computer Sciences, Irvine, California, United States * Graduate School of International Corporate Strategy, Tokyo, Japan * Indian Central School, Singapore * Institute for Christian Studies, Toronto, Ontario * Institute of Clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom of England, English and Kingdom of Scotland, Scottish kings from the early Middle Ages, medieval period, the first major maritime engagements were fought in the Hundred Years' War against Kingdom of France, France. The modern Royal Navy traces its origins to the English Navy of the early 16th century; the oldest of the British Armed Forces, UK's armed services, it is consequently known as the Senior Service. From the early 18th century until the World War II, Second World War, it was the world's most powerful navy. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICS Bravo
ICS may refer to: Computing * Image Cytometry Standard, a digital multidimensional image file format used in life sciences microscopy * Industrial control system, computer systems and networks used to control industrial plants and infrastructures * Information and computer science, the combined field of informatics and computing * Internet chess server, an external server that provides the facility to play, discuss, and view chess over the Internet * Internet Connection Sharing, a feature in Microsoft operating systems since the advent of Windows 98 Second Edition * .ics, a filename extension for iCalendar files * Android Ice Cream Sandwich, the codename for version 4.0 of the Android operating system Education * Donald Bren School of Information and Computer Sciences, Irvine, California, United States * Graduate School of International Corporate Strategy, Tokyo, Japan * Indian Central School, Singapore * Institute for Christian Studies, Toronto, Ontario * Institute of Classi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diver Down Flag
A diver down flag, or scuba flag, is a flag used on the water to indicate that there is a diver below. Two styles of flag are in use. Internationally, the code flag alfa/alpha, which is white and blue, is used to signal that the vessel has a diver down and other vessels should keep well clear at slow speed. In North America it is conventionally red with a white stripe from the upper left corner to the lower right corner. Purpose The purpose of the flags is to notify to any other boats to steer clear for the safety of the diver and to avert the possibility of a collision with the dive boat which may be unable to maneuver out of the way. Signal flag Alpha As a code signal the International maritime signal flag Alpha (or "Alfa", signifying the letter "A") has the meaning of "I have a diver down; keep well clear at slow speed", used to indicate that the vessel has limited maneuverability, and the presence of a diver in the water around the boat. It is used alone in all countri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swallowtail (flag)
In flag terminology, a swallowtail is either # a V-shaped cut in a flag that causes the flag to end in two points at the fly; or # any flag that has this V-shaped cut. The name comes from the forked tail that is a common feature of the swallow species of birds. __NOTOC__ Variants Double-pointed Common in the Nordic countries, this swallowtail flag contains a vertical section in the centre of the fly. Swallowtail with tongue Also common in the Nordic countries, the swallowtail flag contains a third tail (the "tongue") between the other two tails. Triangular swallowtail The triangular swallowtail is the shape of the flag of the American state of Ohio, as well as of some burgees, private signals and pennants of the International Code of Signals (ICS). Guidon A guidon is the general name given to a small swallowtail flag. Guidons are used to represent military units and are displayed on vehicles attached to a particular unit. In some countries (such as the United States), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
