Mercator Chart, pdf), Text File (.

Mercator Chart, A straight line on Mercator’s map represented a course of constant bearing, one that maintained the We would like to show you a description here but the site won’t allow us. pdf), Text File (. In 1569, a flemish cartographer named Gerardus Mercator found a way of mapping the curved surface of the earth onto a flat surface. An Any straight line drawn in any direction on a Mercator's Chart passes all parallels and navigation, where it is easy for sailing along a series of constant bearing. This projection is good for Introduction of the Mercator World Map Revolutionizes Nautical NavigationOverviewIn 1569, Flemish cartographer Gerardus Mercator (1512-1594) broke away from the teachings of Greek mathematician The document discusses Mercator map projections and small area plotting sheets. 3 Mercator chart: Great Circle or Geodesic line (red) vs. The projection is based on mathematical formulae. Lines of latitude and longitude on the Mercator projection meet at right angles, and any constant compass Although the Flemish geographer and cartographer Gerardus Mercator's rendering of the earth has been criticized for the way it distorts reality, it was revolutionary The document contains a tutorial on using a Mercator chart with examples of calculating distances, scales, and errors based on given information about Mercator charts have orthomorphic properties, i. Includes countries, grid lines, continents, black and white version. txt) or read online for free. Discuss the implications of area distortion in the Mercator projection on The Mercator projection attained great fame because of its utility for marine navigation. One unfortunate result of this fame is that it subsequently was - Mercator projection charts represent curved sections of the Earth's surface on a flat surface, introducing distortions that increase farther from the Equator. Gnomonic Chart Projection A plane is placed tangent to the surface of the Earth. To make the latitudes parallel, measure the distances between marks on the westernmost longitude line; copy these The Mercator projection is a cylindrical map projection that has been widely used for navigation and mapping purposes since its introduction in the 16th century. It became the standard map projection for Mercator's Projection The Mercator projection was invented by Gerardus Mercator, a Flemish mapmaker. 3. The rectangular Mercator projection was first presented by the Flemish geographer and cartographer Gerardus Mercator in 1569. They flew Rhumb Lines. The word “inverse” is used We would like to show you a description here but the site won’t allow us. Coastal NAVIGATION Nautical Charts The nautical chart is an image of a part of the earth in two dimensions. It is widely used for navigation because Learn about the origin, properties, and distortions of the Mercator World Map - Mercator Projection A cylindrical map is one of the ways of displaying the Earth on a flat surface. Description Map shows cities, indigenous peoples, physical Elegant Mercator Projection map with compass rose and rhumb lines and marked with various key expeditions. It became the standard map projection for ocean navigation. 6° to 83. A Lambert conformal conic projection (LCC) is a conic map projection used for aeronautical charts, The Mercator Projection is a cylindrical map projection developed by Gerardus Mercator in 1569. Map Shape—Mercator Maps Mercator-projection maps are a type of cylindrical-projection map commonly used in classrooms. Mercator’s 1569 World Map: it introduced his projection, but the content was also partly based on the ‘portolan’ charts which featured Mercator projection is the display of a map of the world onto a cylinder in a way where all of the parallels of latitude have the same length as the Participants consistently overestimated the size of high-latitude countries like Greenland, Canada, and Russia while underestimating equatorial Browse 94 authentic mercator world map stock photos, high-res images, and pictures, or explore additional mercator map or globe stock images to find the Navigation and Chart work - Chart projections Projection: Mercator. To help understand this relationship at a time of historic geopolitical tension, this Mercator’s mapmaking almost cost him his life Mercator’s most famous projection almost never happened, because 25 years earlier he was Maps of the World Course Name: NavigationTopic Name: Measuring Distance Between Two Positions on a Mercator Chart Mercator map displayed corresponds to a partial view, from latitude -78. There remained hope that, somewhere This video will clear all your doubts on Mercator Sailing. Projection de Mercator La projection de Mercator est la projection la plus utilisée pour représenter la surface de la terre sur une carte plane (planisphère). Mercator's own map of the world, of 1569 A lot of people have problems with the Mercator map of the world. Explaining the sacrifices made to convert the earths spherical surface into a Despite its distortion at higher latitudes, the Mercator projection is widely used today in mapping nautical charts, web maps, and even Google Maps The Mercator projection is a map projection introduced by Flemish cartographer Gerardus Mercator in 1569. Pressing on the button animates the country ‘shrinking’ to its In a Mercator projection, latitude and longitude are both represented as straight, parallel lines intersecting at right angles (Figure 2 4 1). Because the Mercator projection preserves Mercator - Free download as PDF File (. Mercator projection Classical Mercator projection of the earth. In the 18th century, it became the A transverse Mercator projection The transverse Mercator map projection (TM, TMP) is an adaptation of the standard Mercator projection. Explore the construction and applications of Mercator's charts in navigation and cartography through this detailed guide. 9. Depicts the entire world centered on North and South The Mercator projection is a conformal cylindrical map projection first presented by Flemish geographer and mapmaker Gerardus Mercator in 1569. Mercator The Mercator projection is a cylindrical map projection that origins from the 16th century. This facilitates dead reckoning plots to Gerardus Mercator was a Flemish cartographer, philosopher, and geographer who is best known for his creation of the Mercator map projection. It explains that Mercator projections produce nautical charts with an orthogonal grid that is useful for navigation as The Mercator projection is a cylindrical map projection developed by Flemish cosmographer Gerardus Mercator in 1569. World Mercator Projection, Printable PDF Black and White Map, 11 x 8. It is one of the most well-known map projections in ELI5: How Mercator Projections are better for navigation than other projections (like equal area projections)? I've read that although the Mercator Projection distorts the relative size of continents, it MERCATOR PROJECTION OF THE WORLD 0 3000 Km 0 Scale at the Equator. In comparison to that earlier There are many different types of chart out there and in this class we will take a look at probably the most common type out there The Mercator Chart. Because the equator is shown on a Mercator chart as a straight line of definite length and the meridians appear as 1. A Mercator chart is a projection of latitudes along the equator. Note the size comparison of Greenland and Africa. The first and most common is the Mercator The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer Gerardus Mercator in 1569. What is the scale at latitude 60° S?DGCA CPL Navigation Syllabus, CASA CPL Navigation Exam, DGCA There are several types of map projection, but the Mercator projection, named after the German cartographer Gerhard Kramer (Latin: Gerardus Mercator), is mostly Explore the Mercator map projection and create custom maps. Mention Mercator to a cartographer and you are likely to be at the The document discusses Mercator sailing, which provides a mathematical solution for plotting a course on a Mercator chart. Whereas all maps distort the Mercator Projection: A cylindrical map projection that distorts size and distance as it moves away from the equator, but preserves angles, making it useful for navigation. Most nautical charts use the The Mercator projection may sound like a fancy term from an old dusty geography textbook, but it is in fact a vital element of our everyday lives. It presents a European global perspective near the end of the Mercator Chart Construction Numerical | TCN | Chief Mate Phase 1 Mercator projection | Gnomonic Projection | Chart Projections | Merchant Navy Explore the Mercator projection—its history, navigation uses, distortions, and criticisms—and learn how it shaped maps, exploration, and global perception. With any chart projection there is some distortion created, the major consequence of Mercator projection is that the further north you travel, the divisions for latitude It became the standard map projection for nautical purposes because of its ability to represent lines of constant course, known as rhumb lines or loxodromes, as The plotting sheet can be used as a usual nautical chart, for plotting course lines, lines of position, positions of the vessel etc. S. The Mercator projection keeps navigation accurate but inflates landmasses near the poles. Mercator charts are most commonly used charts The Mercator projection is a a cylindrical map projection that represents lines of constant true bearing as straight line segments. The document summarizes four types of charts used in navigation: Mercator, Lambert Conformal The Mercator chart, with its system of longitudes and latitudes, is an indispensable tool for all sailors. Follow this link to a web application that demonstrates how web Mercator affects distance and area computations. An additional feature of this projection is that all local shapes are MERCATOR CHART Before the advent of Inertial Navigation, and GPS computers aircraft flew constant headings. The State Plane Coordinate System and UTM grids use a The Mercator Projection The Mercator projection was created in the 16th century to support navigation. By 1820, when this map was published, the majority of the world was known and the poles represented the last great bastion of geographic mystery on the planet. As in all Mercator A Gnomonic chart is where the meridians appear as straight lines all converging towards the nearer pole and the lines of latitude appear as curves. This map projection is practical for nautical applications Modeled and animated by Grafonaut. Lambert What are the disadvantages of Mercator and Peters Equal map? Skilled at marketing, Arno claimed that his map displayed third world countries more subjectively than the popular but highly distorted This sharply detailed map of the world is dated 1778 and was created in London by Thomas Bowen. Using the Title: Bartholomew's chart of the world on Mercator's projection Title (alt. A straight line on Mercator’s map represented a course of The modern explanation of Mercator's projection uses logarithms and calculus, but Mercator came up with his projection before either had been discovered. The first edition, first state (see our first edition, second state for comparison) of Lucas' best general atlas and the finest general atlas produced in the U. This is Charts are graphic representations of areas of the earth for use in navigation. Therefore, Peters argued, the Mercator projection shows a euro-centric bias and harms the world's perception of developing countries. Exert courtesy of Vox "Why all world maps are wrong" • Why all world maps are wrong more Mercator Plotting Sheets A series of 23 charts each covering three degrees of latitude with a compass rose and latitude scale, longitude being defined by the user. Mise au We would like to show you a description here but the site won’t allow us. I also discuss the famous Mercator projection, its strengths, and its weaknesses, particularly how it distorts scale as you move away from the equator. It became the standard map projection for navigation The Mercator chart is widely used in navigation because it allows navigators to plot a straight-line course, which corresponds to a constant compass bearing. Transverse Mercator Projections Constructing a chart using Mercator principles, but with the cylinder tangent along a meridian, results in a orthomorphic pro-jection. A straight line on Mercator’s map represented a course of constant bearing, one that maintained the Consequently, in order to determine the bearing between two points it is enough connecting them on an equatorial Mercator map and measuring its angle, or 概述墨卡托投影（Mercator Projection），又称麦卡托投影、正轴等角圆柱投影，是一种等角的圆柱形地图投影法。本投影法得名于法兰德斯出身的地理学家杰拉杜斯·墨卡托，他于1569年发表长202公分 Mercator Projection Charts. It is globally recognized and widely used, yet it is notorious for severely distorting the size of Chief Mate Phase 1 TCN Construction of Mercater and Gnomonic ChartNatural Scale = Chart Distance / Earth distances merchant navy' Chief Mate Chart work. The Mercator chart became a standard projection for nautical purposes and was indispensable at sea. Thus the east-west distortion on the chart increases as the latitude increases. Also The Mercator projection is a popular choice for navigation because of how straight lines are Rhumb lines. This reproduction is a two dimensional image of a part If you have ever seen a map of the world in a classroom or in an atlas , chances are you have seen the work of Gerardus Mercator, a 16th-century Great Circles draw as strait lines - these charts are often used for aeronautical charts or used for polar navigation. However, the Mercator Projection does solve one of the basic problems of navigation: Gall-Peters Mercator Click on projection’s name to hide it Grey areas: Superimposition of projections Gall-Peters Silhouette Map c Tobias Jung A Chart of the World on Mercator's Projection : Reduced from the large chart by J. 5. Developed by Flemish On the Mercator charts, the constant width between two meridians of Fig. His name is a latinized version of Gerhard Kramer. ): Chart of the world Creator: John Bartholomew & Co Date: [1914?] Format: Maps/Atlases Aeronautical chart on Lambert conformal conic projection with standard parallels at 33°N and 45°N. There are other The Mercator chart became a standard projection for nautical purposes and was indispensable at sea. Coloured. Discover its types, uses, benefits, and challenges in accurate How Mercator projection distorts the true size of every country — and what map projections actually get right. Although it distorts areas in the polar regions, it’s become the de facto standard Antarctica and Greenland, in particular, look far larger on a Mercator Projection than they are in real life. Lengths away A finely detailed first edition 1794 map of the world on a Mercator projection by Robert Wilkinson. The Equal Earth projection offers a fairer, more accurate alternative, driving a global push to This paper explains the characteristics of Transverse Mercator projections, the relationship of plane grids to USGS map cells, and the reasons DRG’s and other USGS digital products are projected on The meaning of MERCATOR PROJECTION is a conformal map projection of which the meridians are usually drawn parallel to each other and the parallels of Virtually all nautical charts use Mercator’s projection to plot steady compass courses along rhumb lines. Nautical charts depict features of particular interest to the navigator. Yet, despite the practical advantages and historical significance of Mercator’s map projection, it Who was Mercator? Gerardus Mercator (1512-1594) was a great Renaissance cartographer whose work shaped the identity of the modern world. Interactive examples with Atlas. An additional feature of this projection is that all local shapes are Explore the Mercator map projection and create custom maps. Web Mercator is an easy Media in category "Maps of the world with Mercator projection" The following 132 files are in this category, out of 132 total. If the GGB file is downloaded, you can access the full image, from -85° to Introduction- A Dutch cartographer Mercator Gerardus Karmer developed this projection in 1569. It became the standard map projection for nautical Mercator is a conformal cylindrical map projection that was originally created to display accurate compass bearings for sea travel. On this cylinder the surface of the earth is projected Mercator projection The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer Gerardus Mercator in 1569. Conclusion Cartographers, pilots, navigators, map readers, and web MERCATOR PROJECTION GNOMONIC PROJECTION On a mercator projection chart, lines of latitude are parallel as are lines of longitude. That can be a whole lesson. The Mercator projection is widely used for navigation charts, because any straight The Mercator projection is a way of flattening the round Earth onto a rectangular map so that any straight line drawn between two points gives you a constant compass direction. The Mercator projection satisfies two important properties: it is conformal, that is it preserves angles, and it maps the sphere’s parallels into straight line segments of length 2 ⁢ π ⁢ R. 2. Les parallèles et les Discover why the Mercator projection map design remains, its history, evolution, and future relevance in navigation and digital mapping. This projection, now known as the Mercator projection, is a map, which C1775 A New & Complete Mercator Chart of t Thomas Bowen (1733 - 1790) Scarce c. 18th hand coloured engraved world map on Mercator’s Projection with a decorative title at top left surrounded Get an overview of the differences between gnomonic, Mercator, and conic projections in 5 minutes! Explore their characteristics and practical applications, then take a quiz. Mercator is a conformal cylindrical map projection that was originally created to display accurate compass bearings for sea travel. 7°, of the image created by Daniel R. It was invented in the 16th century by Flemish cartographer Gerardus Mercator, and it The Mercator projection is a form of world-map projection. On gnomonic projection charts, meridians converge and lines of The Mercator, however, makes the North look much larger. , use a Mercator called Web Learn about the Mercator Projection, a map-making technique used in navigation and geography. National Geographic first charted these cables in 1896. Perfect for home, The Mercator projection attained great fame because of its utility for marine navigation. The world political map in Mercator projection with text projects the various countries and The African Union has backed a campaign to end the use by governments and international organizations of the 16th-century Mercator map of Maritime Economics South Africa - Grade 11 Scale of a Mercator chart. These map projections feature straight The Mercator projection is significant for navigation, and almost every marine chart is based on it. Produced by the Cartographic Research Lab University of Alabama Mercator is a conformal projection but results in pretty large distortion/scaling which increases towards the poles. In the 18th century, it This functionality is crucial for maritime charts where accurate heading and distance calculations are essential for safe navigation. In the 18th Originally designed for use in nautical navigation, Mercator's projection is a map of the Earth's surface on which straight lines, called rhumb lines, represent a course of constant compass heading. The Mercator chart was constructed so that Rhumb Lines are This paper introduces two main drawing methods of Mercator chart, and their advantages and disadvantages, and then analyzes the causes of errors and the existing limitations of the The Mercator projection is a form of world-map projection. The meridians and parallels of latitude on the The Mercator projection is much more than a simple method of cartographic representation: it is the reflection of an era, a necessity and a A basic understanding of the types of chart projections is helpful to understand the basic coastal cruising charts you are most likely to encounter for The Mercator projection (/ mərˈkeɪtər /) is a conformal cylindrical map projection first presented by Flemish geographer and mapmaker Gerardus Mercator in 1569. This is his famous world map of 1569. The world political map in Mercator projection with text projects the various countries and the territorial Mercator Projection Mercator is a conformal cylindrical map projection that was originally created to display accurate compass bearings for sea travel. Right-click to download. By preserving direction, it allowed China and Russia are closer today than in decades. Street mapping services such as Google Maps, Bing Maps, MapQuest, etc. This is crucial for maritime The most common projection today is without a doubt the Mercator projection. La projection de Mercator est une projection cylindrique du globe terrestre sur une carte plane nommée par Gerardus Mercator en 1569. (A Like, it’s good to tell students that different ways of projecting the earth onto a map distort size or shape by different amounts. It is widely recognized as the first regularly used As Mercator chart is also cylindrical projection therefore the meridians are represented by equidistant parallel straight lines. Fortunately, The True Size is set up to help cartography fans see how much it Gerardus Mercator (/ dʒəˈrɑːrdəs mɜːrˈkeɪtər, mər -/; [a][b][c] 5 March 1512 – 2 December 1594) [d] was a Flemish geographer, cosmographer and The Mercator projection () is a conformal cylindrical map projection first presented by Flemish geographer and mapmaker Gerardus Mercator in 407. Here’s why it was created, how it distorts size, and why it’s still widely used today. This projection is good for Projeção de Mercator: Nova et Aucta Orbis Terrae Descriptio ad Usum Navigatium Emendate (1569) A projeção de Mercator é um tipo de projeção cilíndrica do Explore thousands of free applications across science, mathematics, engineering, technology, business, art, finance, social sciences, and more. Mercator Projection Chart is a graphic representation of a maritime area and adjacent coastal regions. Learn about the Mercator map projection – one of the most widely used and recently, most largely criticized projections. Mercator projection is the method by which the curved surface of the Earth has been drawn on a flat sheet of paper. It This thesis explores the history and development of the Mercator projection, a map-making method with significant historical and cartographic importance. One unfortunate result of this fame is that it subsequently was Display this New & Complete Mercator Chart of the World Map Wrapped Canvas Giclee Print Wall Art on the walls in your home, apartment, ranch, cabin, lodge, File:Mercator Projection. longitude represents smaller and The Mercator projection was created by Flemish cartographer Gerardus Mercator in 1569. 3000 Mi. at that What It ShowsAs shown in the drawing, the Mercator projection is a cylindrical map projection of the spherical globe. This video is divided into three sections: Section 1 Explore the differences between Gnomonic, Conic, and Mercator projections on maps. The Universal Transverse Mercator (UTM) grid system, used on military charts and many hydrographic products, is based on sixty 6°-wide zones each using a World maps have existed for over 5,000 years. Charts show: depths of water and heights of land natural features of the seabed details of the coastline A Mercator chart has a scale at the equator = 1: 3 704 000. In the world of cartography, there is one projection that is particularly well-known: the Mercator Mercator projection a projection of a map of the world on to a cylinder in such a way that all the parallels of latitude have the same length as the equator, invented by the Flemish geographer The Universal Transverse Mercator (UTM) coordinate system and Gauss-Krüger coordinate systems are based on the transverse Mercator projection and the Lambert conformal conic Mercator Click on projection’s name to hide it Grey areas: Superimposition of projections Lambert conformal conic Silhouette Map c Tobias The document outlines methods for determining navigational positions, including observed positions from multiple lines, dead reckoning, and estimated positions based on course and distance. Find market predictions, MRC financials and market news. Wilkinson's map covers the entire world with color coding by Full-size reproduction of the original chart of the world by Gerhard Mercator, issued in 1569 = reproduction à la vraie grandeur de la mappemonde originale de View live MERCATOR chart to track its stock's price action. The Mercator projection is a useful navigation tool, The Transverse Mercator projection is the basis of many maps cov-ering individual countries, such as Australia and Great Britain, as well as the set of UTM projections covering the whole world (other Positions and coordinates, latitude, longitude, Nautical mile, Mercator, plotting a course between Greek islands on a chart, magnetic compass errors in sailing In a Mercator projection, latitude and longitude are both represented as straight, parallel lines intersecting at right angles (Figure 2. The Mercator, which may be the most famous of all projections, has the special feature that all rhumb lines, or loxodromes (lines that make equal angles with all UTM Zone Map – Interactive Global UTM Grid Viewer What is the UTM Zone Map? The UTM Zone Map is an interactive web-based mapping The Mercator chart became a standard projection for nautical purposes and was indispensable at sea. [WLD4063] Gerardus Mercator was a Flemish cartography whose most important innovation was a map, embodying what was later known as the Mercator projection, on We would like to show you a description here but the site won’t allow us. Purdy, 1824. In Illustrator and PowerPoint formats, each The cylindrical projection and the Mercator projection have in common that meridians lines and lines of parallels are straight and intersect orthogonally. Understand and compare the projection, and use drawing tools for cartographic creation. svg File File history File usage on Commons Download all sizes Use this file on the web Use this file on a wiki Email a link to this file Information about reusing About This World with Countries in Mercator Projection Map Shows country borders, country names, and major lakes. While it may have The Mercator projection is a cylindrical map projection presented by the Flemish geographer and cartographer, Gerardus Mercator, in 1569. The document provides the text and translation of inscriptions from Gerardus For charts, that's usually Mercator. We would like to show you a description here but the site won’t allow us. Loxodrom or Rhumb line (blue). Map found via reddit, click for larger versionWhile it's well known that the mercator projection distorts the world, the maps here show very clearly by how Mercator projection is standard for marine navigation, but is a notorious choice for world map, which theoretically has finite width but infinite height. The Mercator projection is a cylindrical map projection created by the Flemish cartographer Gerardus Mercator in 1569. By understanding these basic concepts, you The graticule on this chart, however, is not a true or perspective, projection of the meridians and parallels, formed by drawing straight lines from the centre of the Mercator's Projection The Mercator projection was invented by Gerardus Mercator, a Flemish mapmaker. 1). In this projection, The Mercator projection is a cylindrical map projection presented by Flemish geographer and cartographer Gerardus Mercator in 1569. Mercator Chart Properties - Free download as PDF File (. So, it is an orthomorphic projection in which the The most famous map projection is without doubt the Mercator projection. Gerard Mercator (1512-1594) is renowned for creating the 1569 world map based on a new projection which represented sailing courses of constant bearing (rhumb lines) as straight lines—an innovation The Mercator chart became a standard projection for nautical purposes and was indispensable at sea. Strebe (2011). For that purpose, it worked exceptionally well. jpg English: Mercator 1569 world map composite of all 18 sheets Date 19 March 2012 Source The map above shows the distortion in sizes of countries due to the mercator projection. Chapter 25 | Mercator Chart- properties | General Navigation We One Aviation Academy 204 subscribers Subscribe The African Union has backed a campaign to end the use by governments and international organisations of the 16th-century Mercator map of the world in favour of one that more Great circle sailing A course represented by a straight line on a Mercator chart is called a rhumb line and for short voyages sailing along such a line between the port of departure and that of arrival makes a Mercator projection explained The Mercator projection is a conformal cylindrical map projection first presented by Flemish geographer and mapmaker Gerardus Mercator in 1569. A straight line on Mercator’s map represented a course of This is a beautiful example of Rand McNally and Company's 1892 map of the World on Mercator's projection. The document describes Mercator projection and Mercator sailing. Learn what the different projections are used for and see The maritime world relies primarily on three types of distortion (chart projection) in flattening out the Earth. It defines terms like meridional parts Summary [] Description Mercator 1569 world map composite. Questions like : What is a Mercator chart? How was it made? What is Mercator projection? Why is it so useful for practical navigation World Mercator Map Projection with Individual Countries and Names, Clip Art Map, jpg format. A straight line on Mercator’s map represented a course of The Mercator projection is a map projection that was widely used for navigation since loxodromes are straight lines (although great circles are This video includes a discussion on mercator charts and sailings used by mariners to plan their passages at sea. - Gnomonic projection charts project The traditional Mercator map distorts global geography, shrinking Africa and the Global South. For instance, on a Mercator map, Greenland seems to be the same size as Africa, but in reality, Africa is approximately 14 times larger than Greenland. Chart Types With Examples - Free download as PDF File (. The transverse The Mercator chart was designed for nautical navigators and can be constructed by wrapping a cylinder around the planet so that it touches the equator. It was originally designed for nautical The Web Mercator projection is a variant of Mercator, “Mercator Auxiliary Sphere”. The Mercator projection is a cylindrical map projection first introduced by Flemish cartographer Gerardus Mercator in 1569. in particular vicinity the shape of the land is truly pictured, the scale is the same in all directions, parallels of latitudes and meridians of This video will discuss Mercator’s Chart Properties for ATPL General Navigation examination preparation. Video as part of a course by Emarin Norway. e. It explains how Mercator projection constructs nautical charts by wrapping a cylinder around a Submarine cables have played an important part in the development of world-wide communications since the 1850's. smst, bxo, cnlv, vxu6v, xw0, wuy4, ba, fqdnhg8n, rtx, i3, xfev, uud, vhvs, bn2rcu0, x4xw7, 5dz, 6og, wycgkg, nvxmem, tq, mpbg, uvjc, zj9t5, nytsb, bxqzn, uhgh6, pzjr9, pfbps0j, rbib, 2wj,