Group items tagged

Formerly a region of high-unemployment, the German port of Bremerhaven has experienced a remarkable economic upturn, transforming into a major offshore wind power know-how centre and more. At least four of Germany's North Sea and Baltic Sea major ports have been transformed into the country's main wind industry logistical centres and/or equipment manufacturing/supply bases during the past few years. 'Of the €500 million invested for offshore wind power development along the German North Sea coastal region during the past years, about half came to Bremerhaven.' -- Jan Rispens, Managing Director, Windenergie Agentur Bremerhaven/Bremen (WAB) Emden serves as a main export harbour for Enercon wind turbines, and the German market leader operates a large concrete tower manufacturing plant within Emden's boundaries. BARD Engineering chose Emden as its offshore wind turbine assembly and rotor blade manufacturing location, while part of BARD's Tripile offshore foundations are being manufactured by a subsidiary company in Cuxhaven. Both BARD and Enercon have, in addition, built a foundry in the region, aimed at providing at least part of their individual demand for heavy-cast components.

Following last summer's record minimum ice cover in the Arctic, current observations from ESA's Envisat satellite suggest that the extent of polar sea-ice may again shrink to a level very close to that of last year. Envisat observations from mid-August depict that a new record of low sea-ice coverage could be reached in a matter of weeks. The animation above is a series of mosaics of the Arctic Ocean created from images acquired between early June and mid-August 2008 from the Advanced Synthetic Aperture Radar (ASAR) instrument aboard Envisat. The dark grey colour represents ice-free areas while blue represents areas covered with sea ice.

Efforts to develop a massive environmentally friendly power plant combining photovoltaic generators and windmills that will float on the sea are progressing well, according to a team of scientists at Kyushu University. The planned plant will measure two kilometers by 800 meters and will be equipped with light-emitting diodes that shine light into the sea to promote seaweed growth, which in turn will absorb carbon dioxide and attract fish.

Germany's first offshore wind farm has gone online off the North Sea island of Borkum. A year late and 50 million euros over budget, it's still the best hope proponents of green energy have for meeting the country's ambitious emissions reductions targets. Electricity generated by Germany's first offshore wind energy park began streaming into the national network on Wednesday as three wind turbines located 45 kilometers (28 miles) north of the North Sea island of Borkum went online. The three wind turbines are massive. Each towers more than 100 meters (328 feet) above the waves, with blades spanning more than 116 meters. Individually, the wind turbines are capable of generating 5 megawatts of energy per year. The initial trio will be joined later this year by nine more wind turbines. When all 12 go online later this year, the installation is expected to provide enough electricity to power 50,000 homes.

More than 90% of the UK's oil production occurs offshore within the central and northern sections of the North Sea, regions which could soon fall under Scottish control if the country votes yes to Independance. Offshore-technology.com profiles the ten biggest oil producing fields in the UK sector of the North Sea based on production during the year ending in October 2013.

Flyndre and Cawdor offshore oil fields are located 293km south-east of Aberdeen in blocks 30/13 and 30/14 of the UK North Sea, and block 1/5 of the North Sea in Norway. Maersk Oil UK owns 59.96% and 60.6% interest respectively in the Flyndre and Cawdor fields, and also operates the fields.

The (UK) Telegraph has an article on the Vivace tidal / current power device I mentioned recently - Ocean currents can power the world, say scientists The technology can generate electricity in water flowing at a rate of less than one knot - about one mile an hour - meaning it could operate on most waterways and sea beds around the globe. Existing technologies which use water power, relying on the action of waves, tides or faster currents created by dams, are far more limited in where they can be used, and also cause greater obstructions when they are built in rivers or the sea. Turbines and water mills need an average current of five or six knots to operate efficiently, while most of the earth's currents are slower than three knots.

The technology can generate electricity in water flowing at a rate of less than one knot - about one mile an hour - meaning it could operate on most waterways and sea beds around the globe. Existing technologies which use water power, relying on the action of waves, tides or faster currents created by dams, are far more limited in where they can be used, and also cause greater obstructions when they are built in rivers or the sea. Turbines and water mills need an average current of five or six knots to operate efficiently, while most of the earth's currents are slower than three knots.

Here's a wave power technology which you may not have heard of: It's called the Searaser and (though only in prototype stages, I've got some reservations about how well it may scale up, as well as the name which somehow I always see as 'Sea Eraser') it may be worth watching. The principle is fairly simple and proven in a different context: Use the Searaser to pump quantities of sea water up a hill where it can be stored in ponds until needed and then released downhill to drive hydroelectric turbines to create power. This is how the Searaser works:

Earlier this week, Portugal debuted the world's first commercial wave energy farm. Wave energy at the Agucadoura station is converted into electricity with the use of three red "sea-snakes", or cylindrical wave energy converters, that are attached to the seabed off Portugal's northern coast. Energy captured by the sea-snakes is carried to an undersea cable station, where it is then fed into the electrical grid.

New satellite measurements show that crucial sea ice in the Arctic Ocean has plummeted to its second-lowest level on record. Arctic ice always melts in summer and refreezes in winter. But more and more ice is being lost and not recovered. The National Snow and Ice Data Center in Boulder, Colorado, announced Wednesday that the extent of sea ice in the Arctic is down to 2.03 million square miles. The lowest point on record is 1.65 million square miles set last September. With about three weeks left in the melt season, the record may fall, scientists say.

At first glance, they look like a couple of giant inflatable garden chairs that have washed out to sea But they are, apparently, the ultimate solution to rapidly rising sea levels. This computer-generated image shows two floating cities, each with enough room for 50,000 inhabitants.

On Tuesday the 23th of September, the deployment of the first commercial wave energy farm in the world started. A Pelamis unit was towed into the sea, connected to an underwater cable and moored to the sea floor, at a site were it will stay for the next 15 years. The Industry was present at the highest level, as so a Minister and even the Navy showed up with a frigate to join the celebration.

The Guardian has a report on some new tidal power technology from a company in Wales inspired by ship propellers and wind turbines - Tidal power gets a boost from propeller and wind turbine techonology. Propellers on ships have been tried and tested for centuries in the rough and unforgiving environment of the sea: now this long-proven technology will be used in reverse to harness clean energy from the UK's powerful tides. The tides that surge around the UK's coasts could provide up to a quarter of the nation's electricity, without any carbon emissions. But life in the stormy seas is harsh and existing equipment - long-bladed underwater wind turbines - is prone to failure.A Welsh renewable energy company has teamed up with ship propulsion experts to design a new marine turbine which they believe is far more robust.

The UK's seas could provide enough extra wind energy to power the equivalent of 19m homes, according to an assessment by the government. The government's strategic environmental assessment (Sea) confirmed projections that an extra 25GW of electricity generation capacity could be accommodated in UK waters. This would be in addition to the 8GW of wind power already built or planned offshore, bringing the potential total electricity capacity of offshore wind to 33GW - enough to power every household in the UK.

Oil spills in the Baltic Sea have continued to drop off in recent years as a result of various authoritative measures, revised legislation and improved aerial and satellite surveillance. Ross Davies takes a closer look at the region's success story Some years back, the Baltic Sea had something of a reputation as being a cradle for oil spills.The figures speak for themselves.

From the 1,224km Nord Stream pipeline carrying Russian natural gas to Europe vto the 166km Langeled gas pipeline running under the North Sea, offshore-technology.com profiles the world's ten longest oil/gas subsea pipelines. Nord Stream, Baltic Sea The Nord Stream, a 48-inch diameter twin pipeline system runs for 1,224km through the Baltic Sea from Vyborg, Russia, to the German coast near Greifswald transporting Russian natural gas to Europe.