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The Medieval and Early Modern Nautical Chart: Birth, Evolution and Use, Lisbon-based ERC-funded academic project. They develop and maintain the MEDEA-CHART Database, a sophisticated search engine and aggregator of early nautical charts data. Online version of Chart No.1 with "Symbols, Abbreviations and Terms" used in nautical charts
An Electronic Navigational Chart (ENC) is a digital representation of a real-world geographical area for the purpose of Marine navigation.Real-world objects and areas of navigational significance, or to a lesser degree - informational significance, are portrayed through Raster facsimiles of traditional paper charts; or more commonly through vector images, which are able to scale their relative ...
On a nautical chart with depths indicated in fathoms, it appears as a broad area with many "14" notations. broadhorn An alternate term for a flatboat. broadside 1. One side of a vessel above the waterline. 2. All the guns on one side of a warship or mounted (in rotating turrets or barbettes) so as to be able to fire on the same side of a warship.
Graphical and textual descriptions of navigational light sequences and colours are displayed on nautical charts and in Light Lists with the chart symbol for a lighthouse, lightvessel, buoy or sea mark with a light on it. Different lights use different colours, frequencies and light patterns, so mariners can identify which light they are seeing. [1]
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 numeric code used at the Battle of Trafalgar . In yacht racing and dinghy racing , flags have other meanings; for example, the P flag is used as the "preparatory" flag to indicate an imminent start, and the S flag ...
The range also includes Admiralty Raster Chart Service (ARCS), which allows paper nautical charts to be viewed in raster form on an ECDIS. [ 28 ] Due to the changing nature of the seabed and other charted features, chart information must be up-to-date to maintain accuracy and general safety.
The oldest sailing directions, dating back to the middle ages, descended directly from the Greek and Roman periplii: in classical times, in the absence of real nautical charts, navigation was carried out using books that described the coast, not necessarily intended for navigation, but more often consisting of reports of previous voyages, or celebrations of the deeds of leaders or rulers.
The symbols consist of a letter of the ISO basic Latin alphabet in a rhombus, printed in purple ink. [b] On any particular chart each tidal diamond will have a unique letter starting from "A" and continuing alphabetically. [1] Either somewhere on the chart (generally on land) or else on a separate sheet, will be a Tidal Diamond table. This ...