Thursday, February 26, 2015

The medieval undersea cable map


From GoogleMapsMania by Keir Clarke

Every year Telegeography create an undersea cable map of the world and every year the map gets better.

The 2015 Submarine Cable map is inspired by medieval and renaissance cartography and features not only a vintage map style but sea monsters, map border illustrations and images showing some of the common causes of cable faults.

The map shows 299 submarine cable systems across the globe, that are active or are under construction.
The border illustrations provide information on the capacity data of some of the major cable routes.
Other inset illustrations provide information on how submarine cables are laid.




A number of  images on the map explain some of the common causes of cable faults.
Some fictional causes of cable faults are also included in the map in the form of mythical sea monsters.
The text provided with each monster includes a reference to which historical map it first appeared on. 

Links :

Wednesday, February 25, 2015

The switch is on to digital publications onboard yachts

Digital publications can replace many books onboard yachts.

From The Triton by Dorie Fox

Digital nautical publications lighten the load onboard yachts

Walking around the bridge of a new, 145-foot superyacht, the build captain can’t help but smile at how modern it is.
Sure, it has five touchscreens on the glass bridge and myriad other technological advances.
But the one that gets him most excited is the lack of paper and books.
“We have no chart table and minimal book shelves,” this captain said, asking that neither he nor the unlaunched yacht be named.
“We will try to run with as little paper goods as possible.”

And that’s finally OK.
In the past year, more and more flag states have agreed to accept digital versions of the several dozen publications yachts must carry onboard and still remain compliant.


Beginning last spring, these required navigational publications began to be available in digital formats — known as electronic Nautical Publications (e-NP) — including sailing directions, coast pilots, GMDSS, SOLAS, MARPOL, STCW, IAMSAR, and more.
 The UKHO reports that its digital publications have been approved for use in place of paper equivalents by the USA, Lithuania and Belgium.
Its electronic-Nautical Publications (e-NPs) and ADMIRALTY Digital Publications (ADP) can now be used on board ships sailing under the flags of those states, while still remaining compliant with the IMO’s SOLAS carriage requirements.
As a result of these latest approvals, the UKHO claims that over 79 per cent of the global fleet is now authorised to use digital maritime publications rather than hardcopies.
The publications cover topics such as sailing directions, light and fog signals, radio signals, and tidal movements.

There are two main providers of e-NPs, IMO Bookshelf and UKHO Admiralty, each with its own advantages, and both compliant.

As a yacht’s publications begin to expire, more captains are looking to transition to digital.

Capt. Jeff Ridgway is switching the 153-foot M/Y Ingot to digital and has noticed hours of crew time is being saved.
Not only do these products replace hundreds of pounds of books, electronic updates also eliminate having a crew member manually correct the weekly Notices to Mariners.
“As far as publications go, they were always a big job,” Capt. Ridgway said.
“Cutting and pasting the updates, even when it went to loose-leaf notebooks, was a lot of work. Once our current publications fully expire, we will get rid of the books.”

ADMIRALTY Mariners Handbook (NP100) – the comprehensive guide to seamanship and key aspects of navigation

Subscription-based digital publications offer several benefits.
For one, they may make for safer navigating.
“It is possible that updates are not done as frequently as they should be, given a crew’s busy schedule,” said Justin Mann, president of superyacht bridge services at Bluewater Books and Charts in Ft. Lauderdale.
“Now they don’t need to do corrections and there are no manual updates anymore.”

Other benefits include cost.
Paper supplements and amendments no longer need to be mailed to a yacht.
And crew can simply print a weekly certificate of compliance to satisfy flag or port authorities.

With electronic systems, however, there is the possibility of failure in software, hardware or power. With that in mind, flag states require at least one backup on a separate computer on separate power.
M/Y Ingot keeps its publications on a laptop and on the ship’s server, Capt. Ridgway said.
“The requirement is to have two ways to access it, and we have UPS [uninterruptible power supply] on the computers so we could access it for a while if power goes down,” he said.


United States Coast Pilots is a nine-volume American navigation publication distributed yearly by the National Ocean Service.
The purpose of the publication is to supplement nautical charts of U.S. waters. Information comes from field inspections, survey vessels, and various harbor authorities.
Maritime officials and pilotage associations provide additional information.
Coast Pilots provide more detailed information than Sailing Directions because Sailing Directions are intended exclusively for the oceangoing mariner.
Each volume of Coast Pilots must be regularly corrected using Notice to Mariners.
- see NOAA -

Another option is to store the publications remotely — either with a shore-based support person or even in the cloud — which can be accessed in case of failure.
“I had a yacht in the yard that did a build out, but the computer was damaged,” said Danila Richards of Large Yacht Service in Ft. Lauderdale, which helps yachts stay compliant.
“They were scheduled to leave the next day so I reset their data and got a new computer to them before they left.”


Some captains are not ready for these electronic changes, and they don’t have to be.
Going digital is not required, so navigators can choose to stick to paper charts and books.
“Captains should know that they have to be the type that likes to deal with electronics, and they have to understand the nature of receiving electronically,” Richards said.
“It depends on the captain and how well-versed he is in technology whether he’ll enjoy this.”

Most yacht crew, however, are comfortable with electronic charts, and Bluewater’s Mann sees more embracing digital publications.
“Boats want to start to rotate as their publications expire, that’s a prudent way to do it,” Mann said. “Most boats with expired paper products are transitioning.”

As with all things computer-related, the field will continue to evolve and will become more efficient. Most of the required publications are expected to be available in digital format by this spring, Mann said.

Capt. Ridgway and Ingot are in the final stages of the transition.
“We are working through the bugs and getting everything to work with servers in the UK for the updates to come through,” he said.
“I am not sure what everyone else is doing. I just know this is the up-and-coming thing.”

Links : 
  • NGA : digital nautical publications
  • GeoGarage blog : H-Note mobile app from UKHO enables mariners to submit hydrographic data

Tuesday, February 24, 2015

New app allows public to track great white shark movements

Floating Robot tech lets you track great white sharks swimming along California Coast in Real Time

From TheWeatherNetwork 

New technology allows the public to track the movement of great white sharks as they travel along the Central Coast.
These new tracking devices might give swimmers a little sense of relief, but that's not what their intention is.

Marine biologists have been working for years to learn more about the behavior and swim patterns of great whites.
Marine biologist Dr. Randy Kochevar has made shark encounters a focus of his research.
Following the migrating patterns of sharks, he found the great whites along the Central Coast spend half of their time close to shore and half in deeper water.
"Once we started to identify these hot spots where they come and go to we started exploring new technologies that would allow us to monitor their coming and going from these areas," says Dr. Kochevar, marine biologist with Stanford University's Hopkins Marine Station.

This map shows the tracks of the currently deployed Wave Glider, which is equipped with an acoustic receiver which is listening for white sharks carrying acoustic tags.
The current position of the glider is indicated by a yellow marker with a star; previous locations are indicated with green markers, and shark locations are in red.


Wave Glider Overview (Liquid Robotics)

To track the sharks marine biologists use a device called a wave glider.
The glider, made in the Silicon Valley is powered by solar panels.
Right now, the glider is centered just north of Santa Cruz at Ano Nuevo State Park.
By mapping a figure eight pattern it's detected all these great whites in red (see video above) within the past 12 months, and for the first time ever, the public can see within seconds where a great white might be swimming.

Scientists from the Monterey Bay Aquarium and Stanford use a seal decoy to lure the sharks in so they can tag them.
So far, more than 200 sharks have been tagged and tracked by the glider and buoys posted at shark hot spots up and down the coast.
"We will be able to manage them in a way that is sustainable so that whether its our kids or grandkids or their grandkids that they will be able to come to the ocean and know," explains Dr. Kochevar. "That there is this abundant and diverse ecosystem right here."

It may not be what you want to see in the ocean, but sharks are an important part of marine life that these scientists want you to understand.
Dr. Kochevar says that the number of great white sharks in the Central Coast is actually smaller than they thought. There are as few as 250 along the California region.
He says they don't know if that number means the population has increased or declined, so now they are gathering data with this new technology to keep a closer look.

 Current Track Map
This map shows the tracks from tags that have reported within the past 30 days.

If you're interested in detecting a shark along the central coast you can go to TOPP.org.
Click on "Buoys" to see a list of the most current sharks in that area.

Links :

Monday, February 23, 2015

What are the mystery 'alien' balls found on the ocean floor? Scientists are baffled by manganese rocks discovered in the Atlantic

The R/V Sonne, a German reserach ship, was a couple of hundred miles east of Barbados when a net designed to capture a variety of marine life instead caught ancient balls off manganese ore

From DailyMail by Ellie Zolfagharifard

  • Known as manganese nodules, the large lumps contain valuable metal
  • Scientists have been attempting to explain their origin since the 1870s
  • Researchers have now found largest patch of manganese in the Atlantic
  • One theory is they formed from chemical reactions and bacteria in water
  • Another suggests nodules were created by metals from volcanic vents
  • Analysis could also unlock the secrets to our planet's changing climate

Ever since they were discovered in 1873, scientists have been trying to find out the origin of the millions of potato-sized metal balls that carpet the world's oceans.
Known as manganese nodules, these lumps contain valuable metals that scientists someday hope to harvest from the sea floor.
Now German scientists could be closer to solving the mystery of their origin after stumbling on the largest patch of manganese nodules ever found in the Atlantic.

Ever since they were discovered in 1873, scientists have been trying to find out the origin of potato-sized metal balls that carpet the world's oceans.
Now German scientists could be closer to solving that mystery after stumbling on the largest patch of manganese nodules ever found in the Atlantic

With growth rates of between one to five millimetres in a million years, some of the nodules could be 10 million years old, the researchers said.
'I was surprised, because this is generally not the place you think of for manganese nodules,' said Colin Devey, chief scientist for the expedition at the Geomar Helmholtz Centre for Ocean Research told LiveScience.

With growth rates of between one to five millimetres in a million years, some of the nodules could be 10 million years old, the researchers said.
Pictured is a stock image of a manganese nodule

These metal balls consist of the manganese, iron and other coveted metals such as copper, cobalt or zinc

Manganese nodules have been found in every ocean, but are most common in the Pacific Ocean.
These particular nodules were discovered in waters roughly 16,400ft and 18,000ft (5,000 and 5,500 metres) deep.


In the Clarion-Clipperton Zone are the largest known manganese nodule deposits.
Here, the International Seabed Authority (ISA) has granted 13 research licenses

One theory as to how they formed is through chemical reactions in seawater that were boosted by microbes.
Another suggests the nodules were created by precipitation of metals from seawater, especially from volcanic thermal vents.
These metal balls consist of the manganese and contain iron and other coveted metals such as copper, cobalt or zinc.
Since the 1970s, they have been considered a possible source of raw materials.
But due to the large water depths and the associated technical complexity and potential environmental damages, no commercial exploitation is currently in sight.
At the same time, manganese nodules are scientifically of great interest since they can be used as climate and environmental archives.
Manganese nodules grow like a pearl shell around a nucleus and as a result record information on the prevailing environmental conditions.
Since the nodules grow very slowly, they provide a record of the world's early climate history.
Scientists are now hoping to analyse the nodules in greater detail to understand exactly how they formed.
They say greater analysis could also unlock the secrets to our planet's changing climate.


Manganese nodules have been found in every ocean, but are most common in the Pacific Ocean. One theory as to how they came to be is that they were formed by chemical reactions in seawater boosted by microbes

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