Canada CHS update in the Marine GeoGarage

1310 Port de Montréal

58 charts have been updated (CHS update, February 28)

• 1203 TADOUSSAC TO CAP ETERNITE
• 1226 ANCHORAGES AND HARBOURS INSTALLATIONS / HAUTE COTE-NORD
• 1230 PLANS PENINSULE DE LA GASPESIE
• 1236 POINTE DES MONTS AUX ESCOUMINS
• 1310 PORT DE MONTREAL
• 1312 LAC SAINT-PIERRE
• 1317 SAULT-AU-COCHON TO QUEBEC
• 1350A SOREL - TRACY AU RUISSEAU LAHAISE
• 1350B RUISSEAU LAHAISE TO SAINT-ANTOINE-SUR-RICHELIEU
• 1350C SAINT-ANTOINE-SUR-RICHELIEU TO ILE AUX CERFS
• 1350D ILE AUX CERFS TO OTTERBURN PARK
• 1351A BASSIN DE CHAMBLY TO ILE SAINTE-THERESE
• 1351B ILE SAINTE-THERESE TO POINTE LA MEULE
• 1351C POINTE LA MEUILE TO POINTE NAYLOR
• 1351D POINTE NAYLOR AU LAC LAKE CHAMPLAIN
• 1510A LAC DES DEUX MONTAGNES
• 1510B LAC DES DEUX MONTAGNES
• 2077 LAKE ONTARIO/LAC ONTARIO - WESTERN PORTION
• 2201 GEORGIAN BAY
• 2283A OWEN SOUND TO GIANTS TOMB ISLAND
• 2283B SOUTHERN GEORGIAN BAY - INSETS OF CHART 2283
• 3062 PITT RIVER AND PITT LAKE - PITT LAKE B-C
• 3410 SOOKE INLET TO PARRY BAY
• 3512 STRAIT OF GEORGIA CENTRAL PORTION
• 3514 JERVIS INLET
• 3541 APPROACHES TO TOBA INLET
• 3559 MALASPINA INLET OKEOVER INLET AND LANCELOT INLET
• 4011 APPROACHES TO BAY OF FUNDY
• 4012 YARMOUTH TO HALIFAX
• 4013 HALIFAX TO SYDNEY
• 4015 SYDNEY TO SAINT-PIERRE
• 4016 SAINT-PIERRE TO ST JOHN'S
• 4022 CABOT STRAIT AND APPROACHES
• 4045 SABLE ISLAND BANK TO ST. PIERRE BANK
• 4233 CAPE CANSO TO COUNTRY ISLAND
• 4237 APPROACHES TO HALIFAX HARBOUR
• 4275 ST. PETERS BAY
• 4279 BRAS D'OR LAKE
• 4320 EGG ISLAND TO WEST IRONBOUND ISLAND
• 4321 CAPE CANSO TO LISCOMB ISLAND
• 4363 CAPE SMOKEY TO ST PAUL ISLAND
• 4375 GUYON ISLAND TO FLINT ISLAND
• 4425 HARBOURS ON THE NORTH SHORE
• 4428 HAVRE DE NATASHQUAN AND APROACHES
• 4429 HAVRE SAINT-PIERRE AND APPROACHES
• 4432 ARCHIPEL DE MINGAN
• 4452 HARBOURS AND ANCHORAGES - NORTH SHORE
• 4491 MALPEQUE BAY
• 4615 HARBOURS IN PLACENTIA BAY PETIT FORTE TO BROAD COVE
• 4624 LONG ISLAND TO ST. LAWRENCE HARBOURS
• 4821 WHITE BAY AND NOTRE DAME BAY
• 4826 BURGEO TO FRANCOIS
• 4839 HEAD OF PLACENTIA BAY
• 4850 CAPE ST FRANCIS TO BACCALIEU ISLAND AND HEART'S CONTENT
• 4912 MIRAMICHI
• 4921 HAVRE DE BEAUBASSIN
• 4954 CHENAL DU HAVRE DE LA GRANDE ENTREE
• 5023 CAPE HARRISON TO NUNAKSALUK ISLAND
• 6022A LAKE ROSSEAU AND LAKE JOSEPH
• 6022B LAKE ROSSEAU AND LAKE JOSEPH
• 6248 OBSERVATION POINT TO GRINDSTONE POINT
• 6267 GRINDSTONE POINT TO BERENS RIVER
• 7620 DEMARCATION BAY TO LIVERPOOL BAY
• 7661 DEMARCATION BAY TO PHILLIPS BAY
• 7662 MACKENZIE BAY
• 7663 KUGMALLIT BAY
• 7777 CORONATION GULF WESTERN PORTION

So 692 charts (1647 including sub-charts) are available in the Canada CHS layer. (see coverage)

Note : don't forget to visit 'Notices to Mariners' published monthly and available from the Canadian Coast Guard both online or through a free hardcopy subscription service.
This essential publication provides the latest information on changes to the aids to navigation system, as well as updates from CHS regarding CHS charts and publications.
See also written Notices to Shipping and Navarea warnings : NOTSHIP

Relying on GPS could leave you lost at sea

From MotorBoatsMonthly

A study has revealed that a growing overdependence on satellite navigation could have catastrophic effects on boaters

Global Positioning System (GPS) gadgets have become such a big part of our lives, both on and off shore, that we are becoming dangerously dependent on the technology, according to a report from the Royal Academy of Engineering.

The GPS uses signals from satellites to provide precise timing and location details to everything from marine chartplotters to mobile phones but those signals are vulnerable to disruption with potentially devastating results.

Since the signals received by GPS systems are very weak – the equivalent to receiving the light from a bright bulb at a distance of 20,000km – they are open to interference or corruption, either from phenomena such as sun spot activity (geomagnetic storm) or malfunctioning TV aerials, to purposeful disruption using jamming broadcasts.
Although jammers can be bought legally for as little as £20 online, it is illegal to use them in the UK.

Dr Martyn Thomas, who chaired the group behind the report, said, "We're not saying that the sky is about to fall in; we're not saying there's a calamity around the corner.

"What we're saying is that there is a growing interdependence between systems that people think are backing each other up. And it might well be that if a number of these systems fail simultaneously, it will cause commercial damage or just conceivably loss of life. This is wholly avoidable."

The report investigated the effects of commercially available GPS jamming systems on marine navigation by sailing the Northern Lighthouse Board vessels NLV Pole Star through a patch of sea blanketed by the jamming signal.

This caused the Pole Star's GPS receivers, automatic identification system transponder, dynamic positioning system and gyro calibration mechanism to fail.
Each of these systems was in some way controlled by or dependent on GPS.

"What was interesting about the Pole Star, which took place off Flamborough Head, was the range of results that we got," said Richard Ploszek, the Royal Academy of Engineering's senior policy manager responsible for compiling the report.
"Some of the readings were quite obviously erroneous, such as placing the ship doing 100 knots above the North York moors, and the GPS software was rejecting those out of hand. But there were others falling into what we would class as the dangerously misleading category, five metres here or there for example. That would be enough to put you on a rock or really play havoc with the precision docking systems of these larger vessels."

The report concluded that: "There were several questions raised by this trial, such as the ability of a vessel's crew to quickly revert to traditional means of navigation and also the extent to which they are able to navigate with these means.

"Given the greater reliance on satellite navigation, in particular GPS, these skills are not being used daily and are no longer second nature."

According to Ploszek, "The problem would be at its worst in a crowded shipping lane with a lot of boats relying on their GPS. Imagine what could happen in the English Channel on a foggy day."

Links :

• BBCNews : UK 'over-reliant' on GPS signals, engineers warn
• NewScientist : GPS chaos, how a $30 box can jam your life
• FinancialTimes : Engineers alarmed at satnav vulnerability
• TheTelegraph : Britain at risk from big satnav crash, say experts
• NASA : 2011 Valentine’s Day Solar Flare / Wired : Shields up, why February 2011 solar storm was a dud
• PNT : Jamming the GPS, a national security threat
• Royal Academy of Engineering : Global Navigation Space Systems, reliance and vulnerabilities
  

Costa Rica unveils massive new marine park

A beautiful collection of video from Cocos Island, Costa Rica
shot by videographer Tobias Meinken. Footage of hundreds of hammerhead, tiger, silvertip, silky, rays, and galapagos sharks.

From OurAmazingPlanet

Costa Rica this week announced the creation of a vast new marine park several hundred miles offshore.
Officials said the move is aimed at protecting the rich diversity of life in this Pacific Ocean region, as well as a group of undersea mountains.

The park, called Seamounts Marine Management Area, covers about 3,900 square miles (10,000 square kilometers) around Cocos Island, an uninhabited speck just over half the size of Manhattan, located 340 miles (550 km) off the coast of this Central American country.

The island is sometimes known as Shark Island for the variety of its finned denizens.
White-tipped reef sharks, whale sharks and scalloped hammerhead sharks prowl the island's tropical waters, which also support more than 30 marine species unique to the region.

Costa Rican President Laura Chinchilla Miranda signed the executive decree that established the new park yesterday (March 3), and conservation groups are applauding the move.

"Creating a protected seamount area sets an important precedent," said Marco Quesada, the Costa Rican marine program coordinator for the group Conservation International.

"Seamounts host endemic species, and the deep water that upwells along their sides brings nutrients that support rich feeding grounds for sea life on the surface," Quesada said. "Seamounts serve as stepping stones for long-distance, migratory species, including sharks, turtles, whales and tuna."

A school of sharks lurks just below the ocean surface near Cocos' rocky shore.
Photograph by Octavio Aburto

Cocos Island, the center point of the new marine park, is sometimes called Shark Island for the species that congregate around it.

The newly established protected area, which is more than two-thirds the size of Connecticut, expands by five times what was already a no-fishing zone around Cocos Island.

Known as Area Marina de Manejo Montes Submarinos in Spanish, the park is likely to include both fully protected and low-impact fishing zones, and will encourage the sustainable management of the ocean to protect two of the region's threatened species: leatherback turtles and scalloped hammerhead sharks.

Leatherback turtles are listed as critically endangered on the IUCN Red List of Threatened Species.
The Costa Rican population of these turtles has declined by 40 percent in the last eight years, and 90 percent in the past 20 years, due in part to the loss of eggs to illegal harvest.

Scalloped hammerhead sharks are on the globally endangered species list, and are often targeted by fishermen for their fins, a prized commodity used in shark fin soup, and a lucrative product on the Chinese market.
Both scalloped hammerhead sharks and leatherback turtles are accidentally captured in commercial fishing operations.

National parks and reserves cover more than 25 percent of Costa Rica's land area.

Links :

• Conservation Int. : Massive new marine protected area offers oasis and hope for endangered sharks and sea turtles
• NationalGeographic : Costa Rica expands Marine Protected Area around Cocos Island

iPhone/iPad GPS position issues

A couple of mobile Marine GeoGarage users report us some problem of geolocalization in our iPhone/iPad universal applications : they don't manage to get a GPS position (so vessel tracking) on the maps.

1/ The first idea is to suspect a trouble of settings :

Just check some setting related to this GPS issue :

• in "Settings", accessed via the "General" icon you can find a function labeled, "Location Services"
• normally "Location Services" must be "ON" but on the individual App menu, can you check if Marine NZ/US/Brazil is not "OFF"
• if it's, turn it "ON" and the GPS problem will normally be resolved.

2/ The second idea is to suspect a trouble with the internal GPS hardware :
So check the device is no more in cellular mode but well with the GPS locating method

To investigate the problem, the first step is to download the Free application "GPS Info!" :
If the embedded GPS works with GPS Info! or with other mapping applications on the Ipad including the Map App that came with the Ipad as well as other Aps (MotionX...), it must give you :

Lat xx.xxxxxx / Long xxx.xxxxxx / altitude xx meters / locating method GPS

Notes :

• don't hesitate to update the version of your iOS to the current version (4.2 today) and don't hesitate also to update of the Marine NZ/US/Brazil
• to help us to solve your problem, you can send us a screen-shoot to have information about your issue. To take an iPhone/iPad screenshot, simply press the sleep button at the top of the iPhone/iPad and the home button at the same time.

This picture points out these two buttons

Links :

• eDepot : iPhone, iPad, and iPod Touch Secrets

Touring the ocean bottom

Satellite bathymetry data from NOAA

From NOAA

The ocean -- it is the most prominent feature on Earth, and of immeasurable importance to life on the planet.

But what would it look like if all of the water was drained out of it?
Mountains and valleys that dwarf Everest; shifting plates and undersea volcanoes; seams, ripples, and plains.
Though ships have mapped only a small portion of the ocean floor, satellites are used to generate incredibly details maps of the bottom of the ocean.
By sensing the minute gravitational changes that pull, push, and bulge the ocean surface, the bottom's shape can be inferred from space.

These bathymetric maps reveal the incredibly dynamic terrain of the ocean.
Where available, ship-based measurements are included to provide even higher detail.
This visualization tours the ocean floor from the gentle continental slopes to the deepest trenches using data analyzed and archived by NOAA.

Does it look familiar?
It is actually the same data that Google has incorporated into Google Earth and Ocean.