Tuesday, June 18, 2013

Canada CHS update in the Marine GeoGarage



31 charts have been updated (May 31, 2013) :
    • 1202 CAP ETERNITE TO SAINT-FULGENCE
    • 1209 SAINT-FULGENCE TO RIVIERE SHIPSHAW
    • 1220 BAIE DES SEPT ILES
    • 2024A BUCKHORN TO GANNON NARROWS AND HARRINGTON NARROWS
    • 2024B GANNON NARROWS TO BOBCAYGEON
    • 2024C CHEMONG LAKE
    • 2024D PIGEON LAKE (SOUTH PORTION)
    • 2024E PIGEON LAKE (NORTH PORTION)
    • 3441 HARO STRAIT BOUNDARY PASS AND SATELLITE CHANNEL
    • 3461 JUAN DE FUCA STRAIT EASTERN PORTION
    • 3462 JUAN DE FUCA STRAIT TO STRAIT OF GEORGIA
    • 3478 PLANS SALTSPRING ISLAND
    • 3538 DESOLATION SOUND AND SUTIL CHANNEL
    • 3606 JUAN DE FUCA STRAIT
    • 3743 DOUGLAS CHANNEL
    • 3908 KITIMAT HARBOUR
    • 4010 BAY OF FUNDY INNER PORTION
    • 4011 APPROACHES TO BAY OF FUNDY
    • 4012 YARMOUTH TO HALIFAX
    • 4142A EVANDALE TO RAM ISLAND
    • 4142B RAM ISLAND TO ROSS ISLAND
    • 4142C WASHADEMOAK LAKE
    • 4142D GRAND LAKE
    • 4337 ALMA AND APPROACHES
    • 4379 LIVERPOOL HARBOUR
    • 4483 CARIBOU HARBOUR
    • 4622 CAPE ST MARY'S TO ARGENTIA HARBOUR AND JUDE ISLAND
    • 4659 PORT AU PORT
    • 4841 CAPE ST. MARY'S TO ARGENTIA
    • 4862 CARMANVILLE TO BACALHAO ISLAND AND FOGO
    • 5640 CHURCHILL HARBOUR
    So 704 charts (1660 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

    Cuba looks to undo decades of poorly planned coastal development, fend off rising seas

    1.2 miles: distance that seawater would penetrate inland in Cuba by 2100, according to scientists
    10,000 : number of sanctions and fines handed down for illegal development along Cuba's coast
    $2.5 billion: annual tourism revenue in Cuba

    From Washington Post

    After Cuban scientists studied the effects of climate change on this island’s 3,500 miles (5,630 kilometers) of coastline, their discoveries were so alarming that officials didn’t share the results with the public to avoid causing panic.

     >>> geolocalization with the Marine GeoGarage <<<

    The scientists projected that rising sea levels would seriously damage 122 Cuban towns or even wipe them off the map.
    Beaches would be submerged, they found, while freshwater sources would be tainted and croplands rendered infertile.
    In all, seawater would penetrate up to 1.2 miles (2 kilometers) inland in low-lying areas, as oceans rose nearly three feet (85 centimeters) by 2100.

    Climate change may be a matter of political debate on Capitol Hill, but for low-lying Cuba, those frightening calculations have spurred systemic action.
    Cuba’s government has changed course on decades of haphazard coastal development, which threatens sand dunes and mangrove swamps that provide the best natural protection against rising seas.

    In recent months, inspectors and demolition crews have begun fanning out across the island with plans to raze thousands of houses, restaurants, hotels and improvised docks in a race to restore much of the coast to something approaching its natural state.
    “The government ... realized that for an island like Cuba, long and thin, protecting the coasts is a matter of national security,” said Jorge Alvarez, director of Cuba’s government-run Center for Environmental Control and Inspection.


    At the same time, Cuba has had to take into account the needs of families living in endangered homes and a $2.5 billion-a-year tourism industry that is its No. 1 source of foreign income.

    It’s a predicament challenging the entire Caribbean, where resorts and private homes often have popped up in many places without any forethought.
    Enforcement of planning and environmental laws is also often spotty.

    With its coastal towns and cities, the Caribbean is one of the regions most at risk from a changing climate.
    Hundreds of villages are threatened by rising seas, and more frequent and stronger hurricanes have devastated agriculture in Haiti and elsewhere.

    In Cuba, the report predicted sea levels would rise nearly three feet by century’s end.
    “Different countries are vulnerable depending on a number of factors, the coastline and what coastal development looks like,” said Dan Whittle, Cuba program director for the New York-based nonprofit Environmental Defense Fund.
    He said the Cuban study’s numbers seem consistent with other scientists’ forecasts for the region.
    The Associated Press was given exclusive access to the report, but not permitted to keep a copy.

     NGA chart #27084

    Cuba’s preparations were on clear display on a recent morning tour of Guanabo, a popular getaway for Havana residents known for its soft sand and gentle waves 15 miles (25 kilometers) east of the capital.

    Where a military barracks had been demolished, a reintroduced sand-stabilizing creeper vine known as beach morning glory is reasserting itself on the dunes, one lavender blossom at a time.


    The demolition nearby of a former swimming school was halted due to the lack of planning, with the building’s rubble left as it lay.
    Now inspectors have to figure out how to fix the mess without doing further environmental damage.

    Alvarez said the government has learned from such early mistakes and is proceeding more cautiously.
    Officials also are also considering engineering solutions, and even determining whether it would be better to simply leave some buildings alone.

    For three decades Guanabo resident Felix Rodriguez has lived the dream of any traveler to the Caribbean: waking up with waves softly lapping at the sand just steps away, a salty breeze blowing through the window and seagulls cawing as they glide through the crisp blue sky.
    Now that paradise may be no more.

    “The sea has been creeping ever closer,” said Rodriguez, a 63-year-old retiree, pointing to the water line steps from his apartment building.
    “Thirty years ago it was 30 meters (33 yards) farther out.”
    “We’d all like to live next to the sea, but it’s dangerous ... very dangerous,” Rodriguez said.
    “When a hurricane comes, everyone here will just disappear.”

    Cuban officials agree, and have notified him and 11 other families in the building that they will be relocated, though no date has been set.
    Rodriguez and several other residents said they didn’t mind, given the danger.

    Since 2000, Cuba has had a coastal protection law on the books that prohibits construction on top of sand and mandates a 130-foot-wide (40-meter) buffer zone from dunes.
    Structures that predate the measure have been granted a stay of execution, but are not to be maintained and ultimately will be torn down once they’re uninhabitable.

    Serious enforcement only began in earnest in recent months, as officials came armed with the risk assessment.
    Some 10,000 sanctions and fines have been handed down for illegal development, according to Alvarez.
    Demolitions have so far been limited to vacation rentals, hotel annexes, social clubs, military installations and other public buildings rather than private homes.
    “Less strict measures have been taken with the people,” Alvarez said, acknowledging that relocating communities is tough in a country with a critical lack of adequate housing.

     Varadero, situated on the Hicacos Peninsula,
    between the Bay of Cárdenas and the Straits of Florida,
    some 140 km east of Havana
    (NGA chart)
    >>> geolocalization with the Marine GeoGarage <<<

    One flashpoint is the powdery-white-sand resort of Varadero, a two-hour’s drive east of the capital, where lucrative hotels attract hundreds of thousands of visitors each year from Canada, Europe and Latin America.

    Some 900 coastal structures have been contributing to an average of about 4 feet (1.2 meters) of annual coastline erosion, according to geologist Adan Zuniga of Cuba’s Center for Coastal Ecosystems Research, a government body.
    Building solid structures on top of dunes makes them more vulnerable to the waves.
    “These are violent processes of erosion,” Zuniga said about regional development. “In many places the beaches are receding 16 feet (5 meters) a year.”

    Varadero symbolizes Cuba’s dilemma: Tearing down seaside restaurants, picturesque pools and air-conditioned hotels threatens millions of dollars in yearly tourism revenue, but allowing them to stay puts at risk the very beaches that were the draws in the first place.

    Cuban officials have tried to get around that choice by replenishing lost sand in Varadero, with plans to do the same next year at the Cayo Coco resort.
    But beach replenishment is an expensive remedy that Cuba can little afford to carry out nationwide.
    Zuniga said it costs $3 to $8 per cubic meter, and a single beach might contain up to 1 million cubic meters of sand.
    The measure will still be necessary at Cayo Coco although the resort was developed with environmental mitigations such as keeping hotels behind the tree line and running a hydraulic system that keeps water circulating properly in an inland lagoon.

    There are no publicly available figures on how many structures have been or will be razed across Cuba.
    Alvarez and Zuniga said officials are evaluating problem buildings on a case-by-case basis, taking into account the needs of local economic development.
    They say nothing is off-limits; even the emblematic Hotel Internacional, a four-story resort built in 1950 as a sibling to the Fontainebleau in Miami, has been doomed to demolition in Varadero at an unspecified date.

    Other installations are gradually being moved inland, and government officials are applying stricter oversight on new construction, they said.
    In May, authorities unveiled the near-completed Hotel Melia Marina Varadero and yacht club, which lies at a safe remove from the sea.

    Cuba’s Communist government wields a unique advantage, one no other country in the region claims: The government and its subsidiaries control the island’s entire hotel stock, sometimes teaming with minority foreign partners on management.
    Cuba’s military-run Gaviota Group alone controls more than three-dozen major hotels.

    So when the government makes up its mind to tear down a hotel, it can do so without having to worry about fighting a lengthy court battle against a displaced owner.

    On top of that, oversight of the coastal initiative happens at the highest level possible: Cuba’s ruling Council of State, headed by President Raul Castro.
    “He is leading this battle,” Alvarez said of Castro.

    Whittle said the island can learn some things from Costa Rica, where significant swaths of coastal and inland terrain have been protected even as tourism flourishes.
    For Cuba, there’s a lot riding on striking the right balance.

    “Will Cuba become a sustainable destination like Costa Rica?” Whittle asked.
    “Or will it go the way of Cancun and much of the rest of the Caribbean that has essentially sacrificed natural areas, marine and coastal ecosystems for economic development in the short run?”

    Monday, June 17, 2013

    Francis Joyon shatters North Atlantic record by more than 16 hours


    Arrival Sunday afternoon

    In his quest to beat the North Atlantic single-handed sailing record, Francis Joyon on board IDEC, has smashed Thomas Coville’s 2008 record by 16 hours, 34 minutes and 30 seconds.
    Joyon completed his journey in a time of 5 days, 2 hours, 56 minutes and 10 seconds.

    Routes of Thomas Coville vs Francis Joyon (in red orthodromy)
    zoom on arrival at Cape Lizard
    Great Circle distance : 2,865 NM • Average speed : 23.30 Kts
    Distance Over Ground : 3,222 NM • SOG : 26.20 Kts

    Over the final stretch, Francis Joyon came very close to beating his own outright distance record over 24 hours (666.2 miles) and this enabled the Breton skipper to make important gains over the second half of the crossing, in spite of sailing some distance away from the Great Circle Route.

     Joyon, with the loyal support of router Jean-Yves Bernot achieves
    the unique feat of holding all four major solo offshore sailing records.
    photo J-M Liot

    Sunday, June 16, 2013

    Oarfish – the sea serpent of ancient times


    Video of the Oarfish, Regalecus glesne, on 5 August 15 2011 :
    an ROV operated by Mako Technologies working for Hornbeck Offshore Services
    was conducting seafloor and water column biotic surveys as
    part of the Deepwater Horizon oil spill NRDA at a depth of 62 m.


    A remotely operated vehicle has come face-to-face with the world's longest-known bony fish -- and video footage of the rare encounter has now surfaced on YouTube.
    Check it out above.
    The giant oarfish was found in the northern Gulf of Mexico, where four other observations were reported.
    These spottings happened between 2008 and 2011, and they recorded the fish at its deepest undersea level yet, at least 463 meters below the surface.
    The giant oarfish, named Regalecus glesne, is rarely seen alive.
    Most observations come from the bizarre creature washing ashore.
    But this new video sheds light on how the fish may behave in its natural habitat.
    A paper on these observations was published online in the Journal of Fish Biology on June 5, 2013.

     Ichthyologist Carl Leavitt Hubbs (right) and colleague display a giant oarfish in 1968.

    Oarfish, also known as ribbonfish and king of herrings, is a deep water creature that can grow up to a size of 50 feet (15 meters) in length and weigh up to 600 pounds (272 kg).
    This deep sea creature is officially the longest bony fish living at a depth of between 66 feet and 1000 feet.
    It is known that when oarfish gets sick or is near to death it comes on the surface of the water and sometimes to the shore, that’s why we have ancient tales of seeing sea serpents coming out of the water surface.


    A 16 feet oarfish that was found on the shore of Bermuda beach in 1860 was described as sea serpent (image below).
    There are no scales on the fish and it’s not edible due to its gelatinous flesh.

     The above photography was actually taken in 1996 and shows a giant oarfish (Regalecus glesne) found on the shore of the Pacific Ocean near San Diego, California.
    This extremely rare specimen was 23 ft (7.0 m)

     Oarfish Regalecus glesne December 26th 1993 Isla San Marcos B.C.S. Mexico

    Saturday, June 15, 2013

    Book World: ‘Lost Art of Finding Our Way’ explores the many ways to navigate

    Long before GPS, Google Earth, and global transit, humans traveled vast distances using only environmental clues and simple instruments.
    John Huth asks what is lost when modern technology substitutes for our innate capacity to find our way.
    Encyclopedic in breadth, weaving together astronomy, meteorology, oceanography, and ethnography, The Lost Art of Finding Our Way puts us in the shoes, ships, and sleds of early navigators for whom paying close attention to the environment around them was, quite literally, a matter of life and death.
    Haunted by the fate of two young kayakers lost in a fogbank off Nantucket, Huth shows us how to navigate using natural phenomena—the way the Vikings used the sunstone to detect polarization of sunlight, and Arab traders learned to sail into the wind, and Pacific Islanders used underwater lightning and “read” waves to guide their explorations.
    Huth reminds us that we are all navigators capable of learning techniques ranging from the simplest to the most sophisticated skills of direction-finding.
    Even today, careful observation of the sun and moon, tides and ocean currents, weather and atmospheric effects can be all we need to find our way.
    Lavishly illustrated with nearly 200 specially prepared drawings, Huth’s compelling account of the cultures of navigation will engross readers in a narrative that is part scientific treatise, part personal travelogue, and part vivid re-creation of navigational history.
    Seeing through the eyes of past voyagers, we bring our own world into sharper view.

    From Washington Post

    ‘In this book,” writes John Edward Huth, a professor in the physics department at Harvard University, “I examine . . . the various ways humans are able to navigate, using simple instruments and environmental clues.”
    That announced purpose seems modest enough, but “The Lost Art of Finding Our Way” is, in fact, a rigorously demanding historical survey — a college course in a book — explaining how people have, over time, managed to make their way from place to place.


    Primitive Navigation - Course Trailer

    While there’s much to enjoy in Huth’s anecdotes about Viking voyages, canine trail-marking, the positioning of churches and the development of celestial navigation, his constant (if necessary) use of maps, diagrams, graphs and geometry will challenge some readers.
    He does, however, write plainly and gracefully (note the understated wordplay of his book’s title).
    There is, moreover, a good deal of romance just in the terminology of his wide-ranging subject: “Dead reckoning,” “the horse latitudes,” “the westerlies,” “Mercator projection,” “nautical twilight.”
    This last, Huth explains, was for sailors “the magical time between the world of day and night when both the horizon and the brighter stars would be visible.”
    It lasts about half an hour.

    “Woods shock,” however, is far from magical, being that “state of anxiety induced by being lost in a wilderness setting.”
    More often than not, increasingly desperate hikers end up walking in circles.
    At least a few of us, alas, suffer from its more mild urban equivalent.
    Let me be personal for a moment.


    Huth notes early on that there are two modes of navigational understanding: route knowledge and survey knowledge.
    In the first, we understand our environment by traversing known paths and familiar landmarks.
    In effect, we learn by rote certain patterns to travel from one location to another, subconsciously ticking off an established order of steps.
    Turn right out the driveway.
    Take a left at the Sunoco station.
    Follow 16th Street to Military Road. And so forth.

    This is — as I know all too well — a very limiting navigational mind-set.
    Make one false step or alter any aspect of the standard pattern, especially at dark, and somehow you’re suddenly lost, driving with mounting wretchedness and confusion, fully aware that the clock is ticking and you’re going to be late for your child’s soccer game or that important dinner party.
    Most of the time there is nothing for it but to ask for directions from a passerby or stop at a gas station or 7-Eleven.
    Even then you are likely to slightly misunderstand what you’re told so that you need to repeat the same shameful inquiries once, twice or even three times before you finally find a street or location you recognize.

    Fortunately, most people and some animals possess better brains than mine.
    They display “survey knowledge,” what Huth calls “a complete familiarity with an environment.
    In your mind you see the region as if you are hovering over the landscape and seeing everything below in miniature.”
    Those with this more holistic grasp of their surroundings are the people who can take shortcuts, who can respond to a traffic jam by following an alternate route, who, in effect, always know precisely where they are on a mental map.

    One of the repeated themes of “The Lost Art of Finding Our Way” is that even the most confused of us can improve our navigational understanding by paying closer attention to the world around us.
    We can check our direction by the sun or flight of birds or the movement of waves, note whether we are going up or downhill, confirm our location in myriad ways from details around us.
    Still, we should always be wary of what is called “bending the map.”


    This phrase describes the initial response of those who, having gone astray in an unfamiliar environment, initially deny that they are lost, even though things around them do not seem quite right.
    People, it almost goes without saying, stubbornly search for those details that confirm what they want to believe, ignoring evidence to the contrary.
    Huth tells the story of the “Hubbard-Wallace-Elson Expedition,” in which three explorers in 1903 Labrador disastrously mistook one river for another, then persisted in believing they were on the right path, despite every evidence to the contrary.
    By the time the three decided to retrace their steps, they were starving.
    The weakest man was finally abandoned and, essentially, left to die in his tent.

    As Huth stresses, again and again, our world is packed with directional information, if we only know how to see and grasp it.
    He discusses navigating by the sun and the stars; the use of the compass, sextant and marine chronometer; the determination of latitude and longitude; the flight of birds; the nature of currents and gyres.
    He touches on the refraction of light on the horizon (“looming”), the creation of mirages and even offers an explanation for the universal myth of the Great Flood: When you travel away from the shore in a boat, the land eventually seems to sink below the horizon.
    When you return, the highest elevations appear first as the boat approaches land.
    To those who believed in a flat Earth, the visual effect must have been one of the ocean engulfing the land and then of the waters receding.

    This taste for thoughtful speculation reappears in the last chapter, when Huth slightly fictionalizes the legend of Baintabu, a female navigator from Abemama in the Gilbert Islands.
    In Huth’s source documents, Baintabu was said to have accompanied a raiding party to Tarawa but on the way back was “unceremoniously thrown off the lead canoe and rescued by the last canoe in the flotilla.
    Only the last canoe with Baintabu on board made it back to Abemama.” Huth’s story imagines the young woman’s family background, education and nautical accomplishments.
    Late in life, she reminds a disciple: “You must remember that no one sign in navigation is reliable, but several signs in combination are.
    You must always ask yourself, ‘Are there other ways I can prove to myself where I am, and where I am going?’ ”

    “The Lost Art of Finding Our Way” is, as I said, a learned and encyclopedic grab bag, packed with information drawn from study and Huth’s own experience.
    Still, it may be too technical in places for practical use.
    For that, one might prefer Tristan Gooley’s “The Natural Navigator” (2011), enthusiastically reviewed for The Post by my colleague Tim Smith and just published in paperback.
    After all, you might forget your smartphone one day, or your GPS device could go haywire, and before you know it, you find yourself alone in the wilds of Northern Virginia, with night coming on. Now, which way is the Potomac?

    Links :