gCaptain - Maritime & Offshore » charts

Digital Charts – NOAA Takes Technological Leap Forward in Creating Navigational Charts

gCaptain Staff — Tue, 20 Sep 2011 14:16:56 +0000

New York Harbor. Courtesy NOAA

NOAA’s development of a new navigational chart processing system, designed to meet the changing needs of the maritime community, moves into initial limited production on September 21. The new system, which slims down the current map production process while it beefs up performance, represents a technological leap forward in creating the navigational charts used to speed ships and products safety through the nation’s maritime transportation system.

“NOAA regularly updates over a thousand nautical charts, adding data and making corrections that are critical to a wide use of applications,” explains Capt. John Lowell, director of the Office of Coast Survey. “To produce more navigation products, faster, we developed a single source production system that produces all NOAA chart products from one central database instead of the two production lines used since charting technologies first started changing in the mid-1990s.”

With greater efficiencies and versatility, the system speeds chart updates to users; presents opportunities for private industry development of customized products; and improves data exchange capabilities for multiple maritime uses. For instance, the system will integrate with other information for ocean planning and other coastal uses.

Notably, with the efficiencies gained from the new system, Coast Survey can produce more navigation products, with flexible access to more data, without a corresponding increase in budget or personnel.

In October 2004, the Office of Coast Survey began the production improvement project with Fairfax, Va.-based ManTech International Corporation, and ESRI, a leading provider of GIS technology based in Redlands, Calif. Their goal, coming to fruition now, was to develop an integrated production system for NOAA chart production.

“Technological advancements are spurring a revolution in nautical charts, and navigators need flexibility and increased access to data that mariners from the last century could only dream about,” Lowell said. “The system we developed with ManTech and ESRI provides the platform for a wide range of new applications for commercial mariners, recreational boaters and, indeed, for coastal planners along the nation’s 95,000 miles of coastline.”

While the new system moves into initial production this month, the transition of data covering all U.S. waters will take several years, progressing in sets of charts as geographically located in U.S. Coast Guard Districts. As the data is transitioned to the new system, chart users will see more congruity between paper charts that are now produced on one system and electronic charts produced on another. Under the new system, cartographers will enter the same data into a single system and the changes will be sped along to all associated products.
NOAA’s Office of Coast Survey has been the Nation’s trusted source of navigational charts and data since it was organized in 1807 by President Thomas Jefferson. Today, mariners and other users download nearly 300 million free navigational charts annually from www.nauticalcharts.noaa.gov. Users can get fast notice of updates to electronic nautical charts from Coast Survey’s Twitter updates.\

Via NOAA

‘Charting a More Perfect Union’: NOAA releases Civil War chart collection

Mike Schuler — Fri, 08 Oct 2010 17:00:58 +0000

U.S. Coast Survey cartographers traveled with Union forces to produce battlefield maps during the Civil War (Map of the Battlefield of Chickamauga). Credit: NOAA

In recognition of the 150th anniversary of the American Civil War next year, NOAA’s Office of Coast Survey has released “Charting a More Perfect Union”, an extensive collection of Civil War-era maps, nautical charts, and documents that were prepared by the U.S. Coast Survey during war years (1861-1865). A statement issued by NOAA tell us:

Coast Survey’s collection includes 394 Civil War-era maps, including nautical charts used for naval campaigns, and maps of troop movements and battlefields. Rarely seen publications include Notes on the Coast, prepared by Coast Survey to help Union forces plan naval blockades against the Confederacy, and the annual report summaries by Superintendent Bache as he detailed the trials and tribulations of producing the maps and charts needed to meet growing military demands.

In the nation’s early years, the United States lost more ships to accidents than to war. In 1807, President Thomas Jefferson established the Survey of the Coast to produce the nautical charts necessary for maritime safety, defense and the establishment of national boundaries. By 1861, Coast Survey was the government’s leading scientific agency, charting coastlines and determining land elevations for the nation. Today, the Office of Coast Survey still meets its maritime responsibilities as a part of NOAA, surveying America’s coasts and producing the nation’s nautical charts. Keep Reading

In addition to maps and nautical charts, the collection features U.S. Coast Survey supervisor Alexander Dallas Bache’s annual Notes on the Coast of the United States, a series of secret reports used by the Union Army covering the Delaware Bay to the Mississippi Sound that contributed to the success of the Union blockading squadrons.

The entire Civil War collection, with over 400 documents, can be viewed at the Office of Coast Survey website.

Antique Chart Overlays – Google Mashup

John Konrad — Sat, 05 Jun 2010 02:20:57 +0000

Ever wonder how your voyage plan would look to Gerardus Mercator, John Speed or even Captain Cook? Laying out voyage plans has gotten easier in the past decade. From excel spreadsheets to nautical calculators and ECDIS programs, every Second Mate has a tool that assists him in laying out the best route to get his vessel from point A to point B. For a recent project here at gCaptain I laid out a voyage from Singapore to Europe with the exclusive use of Google Earth. This was, of course, not for navigational use but I was able to identify hazards I might not have caught on a paper chart or even an ECDIS. This got me thinking… how different would my voyage look 100 years ago using the charts and tools of the day.

Today’s find comes from the Google Latitude Blog and the David Rumsey Map Collection… historic chart overlays for google maps!

The above image shows small scale chart from 1790 depicting discoveries in the Pacific as well as the routes of three of Captain James Cook’s voyages. Using the overlay tool we are able to lay it over a self created google map and compare the results. While I’m still not sure the practical use for this technology it sure get’s the mind thinking.

Click Here to try it out.

Poll of the Week: Electronic vs Paper Charts

John Konrad — Thu, 01 Oct 2009 15:29:54 +0000

Related Forum Discussion.

The 2008 Submarine Cable Map

gCaptain Staff — Sat, 24 May 2008 00:34:38 +0000

.Telegeography.com is selling one of the most interesting world maps I’ve seen to date. The map depicts the over 120 subsea cables including detailed information on the major systems. You can get the free desktop wallpaper or purchase a poster version by clicking HERE.

Antipode Maps: The Far Side of the World

Richard — Tue, 08 Apr 2008 00:38:28 +0000

This map shows the antipodes of each point on the Earth‘s surface – the points where the blue and pink overlap are land antipodes. Notice that most land has an antipode in the ocean. This map uses the Lambert azimuthal equal-area projection.

This map shows the antipodes of each point on the Earth’s surface – the points where the blue and pink overlap are land antipodes. Notice that most land has an antipode in the ocean. This map uses the Lambert azimuthal equal-area projection.

This map shows the antipodes of each point on the Earth’s surface – the points where the blue and pink overlap are land antipodes. Darker shades indicate areas of higher population density. This map uses the Equirectangular projection.

As a kid I wondered where I’d end up if I could drill a hole all the way through the earth. The answer was always China. That was before I knew the concept of Latitude and Longitude.

Thanks to the net, it’s much easier to make the calculation today. It is interesting to note that very little of the earths land mass overlaps.

Any number of Anitpode map links can make the calculation for you.
Wikipedia info here. You can create your own.

For the hooked on trivia buffs, here’s Wendy Carols’ Map Page.
(Ed. note: If you’re of my vintage you may remember Wendy’s (aka Walter) 1968 synthesizer classic Hooked on Bach.

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This post was written by Richard Rodriguez, Rescue Tug Captain, and US Coast Guard approved instructor for License Training. You can read more of his articles at the BitterEnd of the net.