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ICE FLOE

Programmed Multikopter Flies Autonomously Through Arctic

Alfred Wegener Institute programmed a Multikopter

  How do you get an aircraft in the far reaches of the Arctic Ocean to the goal, if the compass does not provide reliable location data? Engineers aboard the research icebreaker Polarstern of the Alfred Wegener Institute programmed a Multikopter so that he can navigate near the North Pole, despite declination of the Earth's magnetic field. A first successful test flight together with autonomous landing celebrated scientists recently on an ice floe. "The autonomous navigation is in high latitudes is a major challenge," says Sascha Lehmenhecker, engineer at the Alfred Wegener Institute for Polar and Marine Research, the Helmholtz Centre for Polar and Marine Research (AWI). "Navigation is by means of magnetic sensors. However, the field lines of the Earth's magnetic field show in pole near almost perpendicular to the ground, so that a precise navigation is difficult. For this reason, commercial Multikopter controls for inserts are unsuitable in polar regions, "said the engineer. Together with the two graduate students Michael straw Meier and Tobias Mikschl of the University of Würzburg developed Lehmenhecker the control of so-called Multikopter on. This is driven by a number of propellers, about half a meter large aircraft to be sold in the future on ice and after several hours of there own to fly back to a research ship. The special task: Both the ice floe and the ship move


Drifting Arctic Tankship Gets Icebreakers Escort

Tanker Nordvik: Photo courtesy of Khatanga Sea Trade Port

The “Nordvik”, which had been drifting in remote Arctic waters following a collision with an ice floe, is now being accompanied by icebreakers to its home port, reports the 'Barents Observer'. Citing the Russian Sea and River Transport Agency, Barents Obsever says that a total of 1800 litres of diesel oil was transferred from the “Nordvik” into the tanker “Boris Vilkitsky”. The two vessels are now accompanied by two nuclear-powered icebreakers


Tanker Grounding Update

On behalf of the Unified Command, the Alaska Department of Environmental Conservation (ADEC) issued a Situation Report stating that the tanker Seabulk Pride grounded in Cook Inlet near Nikiski. No pollution was reported initially. The tanker was apparently pushed aground by an ice floe. A Second Situation Report states that several tugs and a response barge are being mobilized. A small amount of oil was spilled when the tanker was pushed away from its mooring by the ice


Nichols Brothers Resumes Work

Nichols Brothers Boat Builders returned to work after the company laid off 185 employees Nov. 2. Shortly thereafter, the company filed for bankruptcy protection, a move necessitated by a big lawsuit filed by a disgruntled customer. While the bankruptcy issues are far from settled, Nichols Brothers was allowed to negotiate with individual boat owners to see that their projects, shut down on Nov. 2, could be completed.


This Day in Coast Guard History – Jan. 25

1799- Having existed essentially nameless for 8-1/2 years, Alexander Hamilton's "system of cutters" was referred to in legislation as "Revenue Cutters."  Some decades later, the name evolved to Revenue Cutter Service and Revenue Marine. 1940- The ocean station program was formally established on 25 January 1940 under orders from President Franklin Roosevelt.  The Coast Guard, in cooperation with the U. S


This Day in U.S. Coast Guard History – January 25

1799- Having existed essentially nameless for 8-1/2 years, Alexander Hamilton's "system of cutters" was referred to in legislation as "Revenue Cutters."  Some decades later, the name evolved to Revenue Cutter Service and Revenue Marine. 1940- The ocean station program was formally established on 25 January 1940 under orders from President Franklin Roosevelt.  The Coast Guard, in cooperation with the U. S


Submarine Force Participates in Ice Exercise 2007

Los Angeles-class fast attack submarine USS Alexandria (SSN 757) is submerged after surfacing through two feet of ice during ICEX-07, a U.S. Navy and Royal Navy exercise conducted on and under a drifting ice floe about 180 nautical miles off the north coast of Alaska. U.S. Navy photo by Chief Mass Communication Specialist Shawn P. EklundCommander, Submarine Force has announced the participation of USS Alexandria (SSN 757), home ported in Groton, Conn., in a joint U.S


GAO: Limited Commercial Arctic Development Foreseen

Arctic Tow: File photo

Decreasing seasonal sea ice has opened up Arctic waters for longer periods with resulting potential economic opportunities in commercial shipping, cruises, commercial fishing, oil, and mining. In light of the importance of U.S. efforts to effectively manage Arctic issues, GAO was asked to examine U.S. actions related to developing and investing in Arctic maritime infrastructure, which it did without making any recommendations.


Huge Waves Measured for First Time in Arctic Ocean

J. Thomson / University of Washington

As the climate warms and sea ice retreats, the North is changing. An ice-covered expanse now has a season of increasingly open water which is predicted to extend across the whole Arctic Ocean before the middle of this century. Storms thus have the potential to create Arctic swell – huge waves that could add a new and unpredictable element to the region. A University of Washington researcher made the first study of waves in the middle of the Arctic Ocean


Ice Free Arctic?

Photo Credits: NASA/Kate Ramsayer

 Arctic melting slowed enough in midsummer that scientists don't expect this year's sea ice minimum to set a new record. This year’s melt season in the Arctic Ocean and surrounding seas started with a bang, with a record low maximum extent in March and relatively rapid ice loss through May.    The melt slowed down in June, however, making it highly unlikely that this year’s summertime sea ice minimum extent will set a new record.  


Arctic Ice Loss Driven by Natural Swings, Not Just Mankind -Study

© z576 / Adobe Stock

Natural swings in the Arctic climate have caused up to half the precipitous losses of sea ice around the North Pole in recent decades, with the rest driven by man-made global warming, scientists said on Monday.   The study indicates that an ice-free Arctic Ocean


Arctic Ice Sets New Record Low for Winter

Photo: NOAA

The extent of sea ice in the Arctic Ocean has set a new record low for the wintertime in a region strongly affected by long-term trends of global warming, U.S. and European scientists said on Wednesday.   Sea ice around the North Pole expands to its biggest extent of the year in February or


Western Great Lakes Icebreaking Completed

The U.S. Coast Guard has concluded its domestic ice breaking operations in support of commercial navigation, known as Operation Taconite, throughout the Western Great Lakes, Tuesday.   As a result of warmer temperatures this winter, ice coverage was less than the multi-year average and had


The Icebergs Are Coming: Shipping in the North Atlantic

Distance has to be kept: Icebergs can harm the ships. The only ships coming consciously close to the icebergs are cruisers with ice class. The picture is taken off one of them, the Hanseatic from Hapag-Lloyd Cruises. (Photo: Hapag-Lloyd)

 At present, several icebergs are drifting out of the Arctic Ocean and into the North Atlantic. This natural phenomenon occurs each year in the period roughly stretching between April and August. During this season, these massive chunks of ice cross the major shipping routes on the North


Ice breaking Begins in Great Lakes

The Coast Guard Cutter Alder approaches the Portage Lake Lift Bridge in Houghton, Mich., Dec. 16, 2016. The Alder and other Great Lakes Coast Guard cutters commenced Operation Taconite, the Coast Guard’s largest domestic ice-breaking operation, encompassing Lake Superior, the St. Mary’s River, the Straits of Mackinac and Lake Michigan, Dec. 19, 2016. (U.S. Coast Guard photo)

U.S. Coast Guard Sector Sault Sainte Marie commenced Operation Taconite Monday in response to developing ice conditions in the commercial ports of western Lake Superior and the St Marys River.     Operation Taconite is the Coast Guard’s largest domestic ice-breaking operation


Operation Coal Shovel Icebreaking Underway

The crew of Coast Guard Cutter Neah Bay, homeported in Cleveland, works to keep the CSL Laurentien moving during an escort in eastern Lake Erie March 27, 2014. (U.S. Coast Guard photo courtesy of CSL Laurentien)

The U.S. Coast Guard officially commenced Operation Coal Shovel, Tuesday, encompassing domestic ice-breaking operations in southern Lake Huron, Lake St. Clair, the St. Clair / Detroit River system, Lake Erie, Lake Ontario and the St. Lawrence Seaway.   


Arctic Discovery Shocks Scientists

Photo: Arctic Program

 A report from the Washington Post described how high Arctic temperatures had risen by about 36 degrees Fahrenheit last month, coinciding with record-low sea ice levels.   Scientists have just discovered something int he Arctic that could totally change how they see the drastically


RS issues First Polar Ship Certificate

The first Polar Ship Certificate was issued by the Russian Maritime Register of Shipping Photo RS

The first Polar Ship Certificate was issued by the Russian Maritime Register of Shipping (RS). The document was released by Murmansk Branch on 22 December, 2016 in the port of Murmansk to the tanker Shturman Albanov, owned by SCF Group. In connection with the Polar Code entering into force


USCG Readies for Green Bay Ice Breaking

Photo: U.S. Coast Guard

 The U.S. Coast Guard has announced that commercial fuel shipping activity into the Port of Green Bay will conclude by Jan. 20,  2017.     At that time, in conjunction with the Green Bay (Brown County) Port Director, the Coast Guard will signal the end of the local navigation


Polar Star Arrives at McMurdo Station, Antarctica

The crew of the Coast Guard Cutter Polar Star operates near two seals off the shore of Antarctica, Jan. 16, 2017. U.S. Coast Guard photo by Chief Petty Officer David Mosley

The crew of the Coast Guard Cutter Polar Star arrived at the National Science Foundation’s McMurdo Station Tuesday after cutting a resupply channel through more than 60 miles of Antarctic ice in the Ross Sea. By carving a navigable path through seasonal and multi-year ice


Expedition to Glaciers of Antarctic

Iceberg near Pine Island (Photo Jan Grobys)

How has the West Antarctic Ice Sheet changed in response to alternating warm and cold time periods? And what does it mean for the sea level – today and tomorrow? Pursuing answers to these key questions, 50 researchers on board the Alfred Wegener Institute’s research vessel Polarstern


The Big Melt in World Ocean Ice Record

Photo: National Snow and Ice Data Center

 Sea ice extent in both the northern and southern hemisphere was at record low levels for the month of January 2017.   Last month set a record for the lowest sea-ice extent for the month, falling below the record set last year, according to the National Snow and Ice Data Center (NSIDC)


Arctic and Antarctic Sea Ice at Record Low in January

Photo: © staphy / Adove Stock

The extent of sea ice in the Arctic and Antarctic last month was the lowest on record for January, the U.N. World Meteorological Organization said on Friday, while concentrations of carbon dioxide in the atmosphere hit a January record. "The missing ice in both poles has been quite


Arctic Sea Ice May Vanish Even If World Achieves Climate Goal

© Andreas Altenburger / Adobe Stock

Arctic sea ice may vanish in summers this century even if governments achieve a core target for limiting global warming set by almost 200 nations in 2015, scientists said on Monday.   Arctic sea ice has been shrinking steadily in recent decades


Ice Kings: Model Testing Ship-ice Interactions

The CCGS John G. Diefenbaker model remotely-controlled by a former icebreaker captain while it was being tested in the ice tank. (Photo: National Research Council of Canada)

Model testing ship-ice interactions in the St. John’s ice tank   In a cavernous room in the heart of a research center in St. John’s, Newfoundland at 8 am, the air temperature is -20 C while the water temperature is hovering at zero






 
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