Danish startup Dacoma is turning canting keel technology upside down by fitting an air tank – rather than a lead weight – inside of the keel bulb.
The canting keel is a device found in offshore racing, particularly in the largest vessel classes. It minimizes a monohull sailing yacht’s angle of heel and keeps down keel mass at the same time. The canting keel features a long strut connecting a bulb keel to the bottom of the hull, along with an actuating mechanism to swing the assembly to windward at the required angle.
Dacoma’s version is air-filled and computer-controlled, and it swings in a manner tuned to wave action. Known as the Airkeel, it adds about 1.5 meters in draft below the boat, and its lower part is a hollow, oblong compartment filled with air. Its primary target application is for wind farm crew transfer vessels, which need smooth handling for crew comfort.
Recently, the first vessel ever fitted with an automated air filled swing keel got under way for a brief sea trial on a seven-meter workboat. The keel automatically swings from side to side with movements controlled by a computer and by software developed by Dacoma.
Image courtesy Dacoma
After a year of patenting, funding, development and lab testing, Dacoma took its keel design out to sea for the first time at Faaborg Harbor, on the island of Funen. Dacoma and Tuco Marine Group joined forces to test the Airkeel on Tuco’s fast ProZero-type workboats.
In the shipyard, Tuco cut a hole in the bottom of the boat and worked with Dacoma to mount the Airkeel. Inventor and Dacoma founder Arnd Baurichter climbed on board and started the outboard engine.”It was a big moment, when I sailed away from the slings, but immediately I felt safe at the boat’s movements. It sailed just as expected. The only unusual thing was that the boat didn’t heel over, when I turned and swung around – but that’s exactly what the software adjusts in order to make things as stable and comfortable as possible,” says Baurichter.
Hundreds of data points were recorded by the system’s computer during the 30-minute harbor trip, and after weeks of analysis, Dacoma determined that the swing keel operated as designed. ”When I did a 360 degree turn, the keel swung by only 5 degrees to prevent heeling, but that was at quite a slow speed,” says Baurichter.
The analysis also shows that more testing of the system’s power consumption and course stability is needed in order to fine-tune it. “From the beginning, the system batteries have been overdimensioned, but we need to optimize that. Power usage and weight are important parameters when it comes to commercializing the system,” says Baurichter.
At the next launch, the keel will demonstrate its function in waves outside the harbor. The project takes place within the Maritime Cluster of South Funen, with support from the Danish Maritime Fund and the Innovation Fund.
Go to Source
A massive fire broke out at the Port of Beirut on Thursday, incinerating a warehouse full of tires and oil within the port’s free zone. The same area was heavily damaged in the ammonium nitrate explosion that leveled the central port area and the adjacent waterfront on August 4. According to Lebanon’s civil defense agency, […]
Over the course of the past five days, the Australian Maritime Safety Authority arranged a medical intervention for an injured aboard a freighter in the Indian Ocean. On Saturday evening, the Spliethoff tweendecker Dolfijngracht called for assistance while under way about 1,000 nauical miles off the coast of Western Australia. A crewmember had sustained serious […]
The National Transportation Safety Board (NTSB) has released a Marine Accident Brief about an accident that occurred on April 15, 2019, involving the towing vessel DeJeanne Maria which struck the end of a submerged dredge pipeline while pushing two spud barges to the Gulf of Mexico. The incident occurred on the Mississippi River in Pass […]
Best known as a leading passenger airport serving Germany’s most populated federal state North Rhine-Westphalia, Düsseldorf has become transformed into a vital distribution point, during the COVID 19 pandemic, for medical equipment and other life-saving goods, mostly from China. Gerton Hulsman, managing director of cargo operations, reports that the handling teams are working hard to […]
DSV Belgium has solid experience in the transport of pharmaceutical products for different customers. With a pharma hub based at Brussels Airport a lot of experience and know-how has been built up over the years. Last weekend, the forwarder handled one hundred million mouth masks, an important milestone for its Belgian organisation that has put […]
The UK government’s new post-Brexit tariff regime will result in both winners and losers. The new regime is set to replace the European Union’s Common External Tariff from the end of the Brexit Transition Period on December 31, 2020. The UK’s commitment to the ongoing Brexit process and ending the UK’s transition from EU membership […]
With close to 100 daily cargo flights operated to a destination network spanning more than 65 cities across six continents, Emirates SkyCargo is delivering essential supplies and commodities to people around the world. The air cargo carrier is currently operating 11 Boeing 777 freighter aircraft, each with a capacity to transport about 100 tonnes of […]
Emirates SkyCargo has expanded its weekly scheduled cargo flight operations to cover 75 destinations across six continents. Through its wider reach, Emirates SkyCargo is able to transport essential commodities and other urgently needed cargo more rapidly across the world, allowing exporters and importers across markets to benefit from direct access to widebody cargo capacity. Some […]
Operators can continue to use pilots and other crew members who have unable to comply with certain training, recent experience, testing, and checking requirements due to the COVID-19 outbreak in support of essential operations. Additionally, this Special Federal Aviation Regulation (SFAR) provides regulatory relief to certain persons and pilot schools unable to meet duration and […]
Global commercial aviation charter company Albion Aviation Group is reporting that it is seeing a considerable uptake in its professional cargo broker training courses from the current global pandemic crisis and surge in charter demand. “We have completed a number webinar courses for a whole of host of companies, looking to manage their own cargo […]
Astral Aviation has increased its intra-African network with cargo freighters during the pandemic. While there has been a reduction in capacity to, from, and within Africa, which has been caused by a stoppage of passenger flights and limited frequencies on freighter aircraft, Astral Aviation continues to operate cargo freighters from its Nairobi hub to 13 destinations […]
The U-Freight Group (UFL), with its considerable involvement in eCommerce logistics, says that the latest statistics showing that global e-commerce sales hit $25.6 trillion in 2018 are a further vindication of its decision to enter this sector of the international freight market several years ago. The latest available estimates, up 8% from 2017, were recently […]
Callan Marine is serving as the prime contractor to the Texas Department of Transportation for a maintenance dredging project located at the Bolivar Ferry Terminal, in Galveston, Texas. Work began in May and is estimated to be complete in late July 2020. The project consists of the removal of 600,000 cubic yards of material and […]
Network Airline Management and TAAG Angola Airlines are pleased to announce the renewal of their long-term freighter aircraft contract by an additional 12 months, sealing an ongoing partnership for the foreseeable future. Operating a regular weekly scheduled service from Liege, Belgium, to the capital of Angola, Luanda, Network Airline Management provides a Boeing 747-400F aircraft […]
Qatar Airways Cargo transported 56 SkyCell containers with vaccines from one of the largest vaccine manufacturers worldwide on its scheduled freighter and belly-hold cargo flights for its customer, CEVA Logistics. The 54-tonne shipment consisting of pneumococcal and varicella vaccines were flown from Brussels to Mumbai via the carrier’s hub in Doha on two separate flights. […]
NOAA Fisheries announced Friday that it will cancel five out of its six large-scale research surveys in Alaskan waters this year due to COVID-19. The canceled surveys include the Aleutian Islands bottom trawl survey, the eastern Bering Sea bottom trawl survey, the northern Bering Sea bottom trawl survey, the Bering Sea pollock acoustics survey, and […]