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 Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Bollore Africa Logistics Sees Profit Plunge in H1

First half 2014 profit at shipping company Bollore Africa Logistics plunged to 5.89 billion CFA francs ($11.48 million) from 9.45 billion CFA francs in the same period last year,

Ocean Rig, Petrobras Agree to $1.1b Drill Ships Lease

Cyprus-based Ocean Rig UDW Inc said on Monday that it signed a $1.1 billion three-year contract with Brazil's state-run oil company, Petroleo Brasileiro SA, to

Thrustmaster Announces Factory Expansion

Thrustmaster of Texas, a manufacturer of commercial marine propulsion products, signed a deal last week to expand its Houston-based production facility by 100,000 sqft (93,000 sq m).

News

Missouri River Basin is Booming

The U.S. Army Corps of Engineers Missouri River Basin Water Management Division is maintaining above normal releases at the four lower dams on the Missouri River.

Bollore Africa Logistics Sees Profit Plunge in H1

First half 2014 profit at shipping company Bollore Africa Logistics plunged to 5.89 billion CFA francs ($11.48 million) from 9.45 billion CFA francs in the same period last year,

Twin Disc Offers Virtual and Real EJS Experience

Visitors to the Fort Lauderdale International Boat Show, October 30–November 3, 2014, can experience what it’s like to control a diesel-powered, conventional driveline

Marine Equipment

Twin Disc Offers Virtual and Real EJS Experience

Visitors to the Fort Lauderdale International Boat Show, October 30–November 3, 2014, can experience what it’s like to control a diesel-powered, conventional driveline

Messer to Debut MetalMaster Xcel

Messer Cutting Systems said it has answered the call from manufacturers that have been demanding a faster, more accurate way of producing cut parts. Messer’s

SOSI Delivers Mooring Winches; Completes Test Pad

Sound Ocean Systems, Inc. (SOSI) announced the delivery of two unique mooring winches, both tested on its newly constructed test pad at its primary manufacturing facility in Sultan, Wash.

Deck Machinery

SOSI Delivers Mooring Winches; Completes Test Pad

Sound Ocean Systems, Inc. (SOSI) announced the delivery of two unique mooring winches, both tested on its newly constructed test pad at its primary manufacturing facility in Sultan, Wash.

Barge Master Installed on Walk-To-Work Vessel

On October 14 the Barge Master BM-T40 system motion-compensated knuckle boom crane pedestal was installed on the new Wagenborg Walk-to-Work vessel, designed and built by Royal Niestern Sander.

 
 
Maritime Careers / Shipboard Positions Maritime Security Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Ship Electronics Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | 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: 0.1464 sec (7 req/sec)