Huisman Debuts Rope Luffing Knuckle Boom Crane

Posted by Michelle Howard
Thursday, April 24, 2014
900mt Rope Luffing Knucle Boom Crane

In order to provide reliable solutions for subsea installation in increasingly deeper water and offshore construction in severe weather conditions, Huisman introduces a new patented crane type during this year’s OTC: the ‘Rope Luffing Knuckle Boom Crane’. These new active heave compensated (AHC) cranes provide unparalleled performance by combining the benefits of a normal Rope Luffing Crane and a traditional Knuckle Boom Crane. As such it offers a high lifting height and a large capacity at outreach. The main hoist system, the patented anti-twist device, and the electric drive system really set these cranes apart from other cranes in the market. The capacities of the new cranes range from 400 up to 1,200 ton and up to 5,000 meter water depth. The first crane of this type, a 900 ton Rope Luffing Knuckle Boom Crane for Subsea 7’s ‘Seven Arctic’, is scheduled for delivery in 2016. A model of this vessel including the crane will be presented at the OTC Huisman booth, no. 2327.
 


For the innovative and patented design proven key components are used. By combining these components the overall construction weight of the crane can be kept low, whilst allowing for a high lifting capacity and large lifting radius. By incorporating a knuckle in the design of the crane it is possible to reduce the pendulum of the hook and, if extended, it can allow for high lifting heights. Furthermore, the boom of the crane can be stored vertically saving valuable deck space. The main hoisting system comprises a traction and storage winch system and a separate heave compensation system. This means both lifting/lowering and heave compensation can occur simultaneously with no performance interdependency, resulting in a better overall system performance and increased safety. A failure in main hoisting system will not affect the heave compensator or the other way around.



Because the crane is fully electrically driven, the power consumption, noise levels, and the number of components are reduced. This makes the crane more reliable than hydraulically driven cranes. It also means that maintenance and operational costs are reduced. The main hoist system can be equipped with a double fall reeve system instead of a single fall reeve system, improving the life span of the wire and therewith reducing operational expenditure. Further the lifetime of the wire rope is significantly extended by the combined active and passive heave compensation system on the main hoist, since the number of sheave bends is minimized and there is no drum crushing or wire rope cut-ins on the winch. The passive mode of the heave system includes built-in redundancy, so the passive system is fail-safe. During splash zone lifts, substantial reduction of the dynamic forces on the crane and the lifted object is achieved by using the passive system as a shock absorber, and can be used to avoid any resonance during subsea lifts. Furthermore, real-time active heave compensation can take place at a very low power consumption level. The anti-twist device prevents twisting of the lower block and wire rope during subsea lifts in double fall configuration. In addition, it lowers the point of application of the wire rope, which improves the stability of the vessel and reduces the boom tip motion.

 

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter February 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

IBIA Celebrates 23th Annual Dinner

Association appoints new board members and sets priorities for the future   The International Bunker Industry Association (IBIA) has appointed three new members

OSV Delivered to MC2 in Dubai

Marine Core & Charter LLC (MC2) headquartered in Dubai has taken delivery of the new build PETRA-1, the first of two, 45-meter Fast Offshore Support Vessels in

Baltic Index Pauses at Record Low

The Baltic Exchange's main sea freight index, tracking rates for ships carrying dry bulk commodities, ended flat on Thursday after declining for 12 straight sessions

New Products

First ‘Reachstacker’ Starts Duty in the Port of Ravenna

Liebherr Maritime Cranes delivered a LRS 545, the first model out of the new reachstacker series, to the Italian Port of Ravenna.   The Port of Ravenna is one

Cummins Expands Marine Tier 3 Product Line

Cummins Inc., a manufacturer of diesel engines and generator sets for the marine industry, has launched a new Onan marine U.S. Environmental Protection Agency (EPA) Tier 3-certified generator,

Honda Marine on Display at Miami Boat Show

Honda Marine is set to market its complete range of outboard marine four-stroke engines at the 2016 Miami International Boat Show, February 11-15, 2016.   At this year’s show,

News

Port of LA’s January Volumes Up 33%

704,398 TEUs leads Los Angeles to busiest January in port history    The Port of Los Angeles handled 704,398 Twenty-Foot Equivalent Units (TEUs) in January 2016,

42 People Rescued after Abandoning Ship off Hawaii

Forty-two people are safe after abandoning ship approximately 1,800 miles south of the Hawaiian Islands, Thursday, the U.S. Coast Guard reported.   Crewmembers

Yacht Club Takes Delivery of New Dredger

Rose City Yacht Club, a long-standing private marina and social club along the Columbia River in Portland, Ore., recently took delivery and startup of a new 8-inch Badger Class dredge from Reserve,

Marine Equipment

Yacht Club Takes Delivery of New Dredger

Rose City Yacht Club, a long-standing private marina and social club along the Columbia River in Portland, Ore., recently took delivery and startup of a new 8-inch Badger Class dredge from Reserve,

First ‘Reachstacker’ Starts Duty in the Port of Ravenna

Liebherr Maritime Cranes delivered a LRS 545, the first model out of the new reachstacker series, to the Italian Port of Ravenna.   The Port of Ravenna is one

Innovative Equipment Will Help Unload Listing Ship

Following Smit Salvage’s salvage of the stricken ship Modern Express in the Gulf of Biscay, another Rotterdam company has now become involved in the rescue operations.

 
 
Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Pod Propulsion Port Authority Salvage Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1282 sec (8 req/sec)