Marine Link
Tuesday, January 23, 2018

Propellor News

China's Changxing Shipyard Clears Cruise Ship's Screws

'Star Gemini' Repair: Photo credit CIC Shipyard

The Star Cruises' ship 'Superstar Gemini' was towed in to the yard for emergency repairs to fouled propellors. En route from Shanghai to Jeju Island the Superstar Gemeni's port side propellor shut down after becoming entangled with fishing nets and ropes, and while in the CJK anchorage the remaining starboard side unit shut down as well, leaving the cruise ship without means of propulsion. CIC Changxin shipyard quickly arranged five tugs to bring 'Superstar Gemini' into its JiuhuaShan floating dock where it was found that the propellers were entangled with fishing nets and ropes.

New Propellor Design Software by HydroComp

Propellor Geometry Window: Image courtesy HydroComp

PropElements is a new software product from HydroComp for detail propeller design and analysis. Propeller specialists will find it an essential addition to their propeller design toolbox, but it also was developed to elegantly address the system-level hydrodynamic needs of naval architects, as well. Useful for both design and analysis, PropElements provides the ability to uniquely capture the performance of a particular propeller on a particular vessel. Users can prepare a noise-sensitive wake-adapted propeller design for a vessel, for example. Or analyze the behavior of an existing propeller.

Marine Propulsion – MAN Absorb Propellor Company

Propellor MAN Alpha Kappel

The board of MAN Diesel & Turbo has approved the company’s take-over of Kappel propeller - including designs, software, and intellectual property together with continued co-operation with Mr Jens Julius Kappel. New fuel-saving and energy-efficient propulsion opportunities are available from the MAN Alpha propeller programme, which now fully integrates the Kappel tip fin propeller blade designs for both controllable pitch propellers and fixed pitch propellers. Optimised propeller and propulsion efficiencies contribute to lowering the EEDI (Energy Efficiency Design Index) of ships…

Italian Trawler Features Cummins Power

Built at the Cantier Navali Vittoria, a well known shipyard in Adria Italy, the trawler Profeta is fishing in the Adriatic out or her home port of Chioggia. With a 65-year history the builders are noted for having built over 300 vessels including tugs, trawlers, fast civil and military craft as well as dredgers, tankers and RoRo passenger ferries as well as yachts. Designed by naval architect Giorgio Damiani, the handsome 25.8 x 6.15-meter vessel is equipped with a bulbous bow and bow thruster. Her owner, Zennaro, specified a robust Cummins KTA50M2 for her main engine.

Verreault Navigation Dry Docks French Coastal Carrier

Photo credit:Groupe Maritime Verreault Inc.

France's Verreault Navigation sees the vessel 'Georges Alexandre Lebel' through its scheduled dry-docking. The Georges Alexandre Lebel was in the Verreault dry dock from July 30, to August 4, 2012 for various steel work and machinery repair and maintenance programs. In addition to sandblasting  and repainting the hull, the ship's starboard propellor shaft and rudder were dismantled, machined and replaced. One bunker fuel tank was cleaned by high pressure hose. The company felt sure it had kept to its promise to the customer by delivering a timely dry-docking on budget.

China Shipyard Repairs Panama Canal Damaged Container Ship

German-owned 998-ft container ship 'Ilse Wulff' repaired in CIC Changxing Shipyard after touching bottom in the Panama Canal earlier in the year. Owners of the Ilse Wulff decided to combine the repair of bottom plating and a deformed propellor blade by bringing forward the vessel's first special classification survey. Ilse Wulff was put in to the CIC Jiuhuashan floating dock for the bottom plate and propeller blade inspections and the project work scope was confirmed by the owner’s superintendent, the class surveyor and the shipyard staff after careful inspection. Work to clean and repaint the ship's hull coating was also put in hand. The shipyard says that the owner was satisfied with the quality of the repairs and would look forward to further cooperation with them in the near future.

UK Offshore Wind Farm Support Vessel Launched

'Rix Sea Shuttle Vessel'

First of five boats ordered by Rix Sea Shuttle launched in Grimsby, NE England. The vessel will be employed in the transport of maintenance engineers to and from offshore wind turbines in the North Sea. Each of the aluminium vessels will be crewed and operated by Rix and are designed to carry up to 12 technicians at a speed of up to 25 knots. The remaining boats are to be delivered next year and in 2014, representing a  £7.5m investment by the Hull-based company in the UK’s burgeoning renewable industry.

Container Ship Propellor Damage Fixed by FN Diving

Photo credit FN Diving

Heavy shaft vibrations led  a container shlp owner to call in FN Diving in Rotterdam for underwater repair of the propellor. The inspection of the propeller revealed a deformation on one of the blade tips due to impact damage, the blade was found bent up to a 70 degree angle towards pressure side, while the tip of the next blade was broken off. In cooperation with the Propeller manufacturer, FN Diving determined an in situ repair plan. In order to assure a minimum delay for the vessel…

Lost NZ Ferry Propeller Found 120m Down in Cook Strait

Ferry Aratere: Photo courtesy of Interislander

The propeller had been lost earlier this month from the Interislander ferry, the 'Aratere', which is expected to be out of service for 6 months as a result, but the propeller has now been found in Cook Strait by Seawork Salvage Co., contracted by KiwiRail, reports Radio New Zealand. The propeller was discovered about two nautical miles from Tory Channel, by using sonar equipment and an unmanned vehicle. Citing a Seawork spokesman, Radio NZ say that the company will probably use its survey vessel, the unmanned submarine [sic] and another ship to salvage the propellor.

Damaged Bulker Faces St Lawrence Seaway Closure Deadline

'Orsula' aground: Photo credit US Coast Guard

The loaded grain carrying bulk ship 'Orsula', a 656-foot Marshall Islands-flagged vessel, has been refloated after running aground near Tibbetts Point in the St. Lawrence Seaway, on Boxing Day, but the US Coast Guard report significant damage to her propellor. The 'Orsula' sailed from Duluth, Minn., with 20,000 tons of wheat, and was planning to exit the St. Lawrence Seaway before it closes for the winter on Monday, 30, December 2013. McKeil Marine was hired by the ship’s owners to conduct salvage operations and after lightering cargo and moving ballast, the vessel was refloated.

Tognum & Rolls Royce Cooperate on Two Power, Propulsion, Contracts

MTU 16V 4000 Engine: Photo credit Tognum

The first delivery comprises twelve MTU 16V 4000 M63 engines destined for Camorim, the Brazilian shipping company. Twin MTU engines will be used to power Rolls-Royce propeller-rudder systems on a total of six tug boats. Each engine in this order delivers power of 2,000kW, and its value lies at some three million euros to Tognum. The tug vessels will mainly be used in offshore oil production operations carried out by Petrobas, the petroleum producer in Rio de Janeiro/Macae. The second order is from Fjellstrand, the Norwegian shipyard.

Latest Technology Gives New Bulkship a Fuel-saving Push

Seahorse 35000-class Bulker: Image credit Stone Marine Propulsions

Designers, builders & propellor suppliers employ latest technologies to achieve good results in sea trials of the latest 'Seahorse 35000' bulk carrier. The combined efforts of Stone Marine Propulsion, the NPT propellers designers and manufacturers, Grontmij/Schmidt Maritime the vessels designers, Becker Marine and builders Yangzhou Guoyu bear fruit for the latest Seahorse 35.000 dwt bulk carrier recently launched. The vessel recently completed sea trials and has exceeded all the performance requirements built into its contract.

ONR to Christen Advanced Electric Ship Demonstrator

The Advanced Electric Ship Demonstrator (AESD), Sea Jet, funded by the Office of Naval Research (ONR), is a 133-ft. vessel located at the Naval Surface Warfare Center Carderock Division, Acoustic Research Detachment in Bayview, Idaho. Sea Jet will operate on Lake Pend Oreille, where it will be used for test and demonstration of various technologies. Among the first technologies tested will be an underwater discharge waterjet from Rolls-Royce Naval Marine, Inc., called AWJ-21, a propulsion concept with the goals of providing increased propulsive effiency, reduced acoustic signature, and improved maneuverability over previous Destroyer Class combatants. (U.S. Navy Photograph by John F.

Beached Yacht Salvage Pulls Crowd

USCG Monitor Yacht Salvage Attempt: Photo credit USCG

The 64-foot yacht 'Rays the Bar' driven ashore on Vilano Beach, Florida, center of attention for responders & spectators. A response operation for a 64-foot yacht on the shoreline at Vilano Beach, Fla., involving the Coast Guard, St. Johns County Fire Rescue, St. Johns County Sheriffs, commercial salvage and environmental response companies drew a large crowd of spectators. On passage from Boston to Fort Lauderdale in heavy seas and dense fog the vessel damaged its propellors as it ran aground  near St. Augustine Inlet.

Tugboat Engine Failure Imperils Alaska Drillship Tow

'Kulluk' & Tugboats: Photo credit USCG

Tugboat 'Aiviq' experienced total engine failure, casting it & the Shell drilling rig  'Kulluk' adrift in stong winds & heavy seas, S. of Kodiak Island. The US Coast Guard cutter Alex Haley was sent to assist, establishing a tandem tow of both Aivig and Kulluk, which effectively prevented their drift towards shoal water, then, due to the severe weather the tow-line parted and became entangled in one of the cutter's propellors. The USCG recalled the vessel to base. Meanwhile the Royal Dutch Shell despatched tugboat…

Smit Orders Damen Stan Tug

Smit International awarded a contract to Damen Shipyards Gorinchem for the construction of a new terminal tug, a Damen Stan Tug 3509 for delivery end of this year under yard Nr. YN511606. Built as an enlarged Damen Stan Tug 2909 under standard rules of Bureau Veritas, the vessel will have an overall length of 35.3 m, a beam o.a. of 8.9 m, a draft of 4.3 m and a displacement of 420 tons with empty tanks. The twin screw tug will be powered by two Caterpillar 3516B TA/A main engines driving, via Reintjes WAF 872/7.087:1 gearbox, bronze Promarin fixed pitch propellors within 2,500 mm v.d. Giessen Kort nozzles. The total ouput will be 2950 kW (3959 bhp) at 1600 rpm. A bollard pull in excess of 52.8 tons is anticipated, with a free running speed of approximately 12.7 knots.

Groundbreaking DC Bus System in New Ship

M/V Abis Dover: Photo credit Alwijnse Marine Systems

One of the first ships in the world to use a DC bus system for the main electrical installation recently entered service – the 'Abis Dover'. Built by ShipKits shipyared in a project that included Vuyk Engineering Groningen, Alewijnse Marine Systems, all based in The Netherlands, and Finland’s Vacon, the ship’s upper cargo hold is a remarkable 80 m (262.5 ft) in length, almost 75% of the LOA of 107m (351ft), achieved by avoiding space-consuming propellor shafts and going for the diesel-electric propulsion option.

Delivery: Kosnac Takes June K. from A&B Shipyard

Kosnac Floating Derrick Corp. of Staten Island, NY took delivery of the 2,700 hp June K, the company's first twin-screw tug and its first new build after three generations of Kosnac family management. "We took everything we learned from 75 years of using other peoples' boats in New York waters," said Capt. The 78 x 26 x 10.5-ft. tug, with twin CAT 3512B diesels and a 9-ft. draft, was built by A&B Shipyard, Amelia, La. It is the first of three in Kosnac's current building program. Intended principally for ship handling and assist work, barge towing and dredge assist, the June K's draft is shallow enough to navigate the many creeks and estuaries throughout the Port of New York region.

Propellor Club of Jacksonville Honors W&O Employee

Tammy Emerson: Photo credit W&O

Longtime W&O-employee Tammy Emerson, Senior Outside Sales Representative, for the leading marine equipment supplier, has been recognized as the Propeller Club of Jacksonville’s 2011-2012 Maritime Member of the Year. Emerson received this distinction as a result of her commitment to the club and its mission to promote the maritime industry. "Tammy has been a constant source of energy and was instrumental in the execution of multiple events that brought in new sources of support for our group,”" said Melissa Wilson, President of the Propeller Club of Jacksonville.

Contra-Rotating Propellors: New System Prediction Software

New features for the industry-standard resistance and propulsion software, HydroComp's NavCad. Many contemporary marine vehicles are being outfitted with contra-rotating propellers (CRP), and naval architects need the ability to model the performance of CRP systems – a capability that has been lacking until now. As part of its ongoing internal R&D program, HydroComp, Inc. has just deployed a new CRP system analysis module into HydroComp NavCad®, the industry-standard software for the prediction and analysis of vessel speed and power performance. Published comparisons of the efficiency between standard fixed-pitch propellers (FPP) and CRP propellers typically indicate that CRPs are between 3% and 10% more efficient.

MAN Supply Dredger Propellor Blade & Nozzle Upgrade

MAN Alpha Prop & Nozzle: Photo credit MAN

NCC-owned dredger benefits from recent PrimeServ exchange and modernisation of propeller blades & propeller nozzle – with payback time of just 1½ years
. MAN Diesel & Turbo’s PrimeServ division in Frederikshavn has, in close cooperation with shipowner and constructional engineering company NCC, performed a propulsion equipment upgrade for the ‘M/V Baltic’, a 900 m³ sand and gravel dredger. NCC has a fleet of five ships and was, as a starting point, interested in the upgrade of the Baltic.

Hartzell Introduce New Adjustable Pitch Propellor

The Series 44M with the AM propeller design is suitable for applications from engine room exhaust to cargo hold ventilation fans. The new die-cast aluminum propeller has been specifically engineered to enhance the operating performance of their Series 44M Ductaxial fan. The Series 44M with the new AM propeller is available in sizes 12 to 48 inches and produces up to 65,000 CFM and up to 4 inches of static pressure. The Series 44M with the AM propeller design is available for use in a variety of hostile environment applications, from engine room exhaust to cargo hold ventilation, in offshore oil rigs or workboats. Sean Steimle, President of Hartzell Air Movement, states “The AM propeller is a direct result of listening to our U.S. and global marine customers’ requirements.

Numerical Towing Tanks A Practical Reality?

Challenge 1  Trimmed hexahedral mesh around the hull and rudder with polyhedral overset mesh around the propeller.

Since the first commercial ship basin was commissioned in 1883, towing tanks have provided naval architects with a reliable method of predicting the performance of a ship at sea. Towing tanks are used for both resistance and propulsion tests, with towed and self-propelled ship models used to determine how much power the engine will have to provide to achieve the speed laid down in the contract between shipyard and ship owner. The performance of a vessel depends on the hydrodynamic interaction between the hull…

Maritime Reporter Magazine Cover Dec 2017 - The Great Ships of 2017

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