Liebherr has been testing its new PowerBoom

on its 3,000 metric ton LR 13000 crawler crane. The company said over the next few weeks the P-boom will undergo tests in the most widely differing configurations.

With the PowerBoom, the lattice elements in the lower area are mounted parallel to one another, while at the top the double boom is merged together to form one single boom. The lifting power of the crane can be substantially increased thanks to a simple mechanical supplementary system making use of standard lattice components, the company said. This applies to the main boom and the luffing jib, because the P-boom causes the torsion torque moment to be substantially increased. This widens the scope of application a great deal, and the PowerBoom raises the crane into the next higher lifting capacity class, Liebherr said.

The PowerBoom was already being taken into account in terms of design as early as when the LR 13000 was under development. This meant that the crane could be arranged right from the start to take on the new system. The increases of lifting capacities of the luffing jib on the LR 13000 result in a doubled effect, on the one hand from the increased torsion torque moment of the PowerBoom itself, and also from the use of particularly strong lattice elements. For the P-boom, in the parallel area the lattice elements from the standard luffing jib are used. The powerful main boom elements, which then become free, can accordingly be fitted as a particularly heavy-duty luffing jib.

Liebherr said the development of the P-boom system is a milestone in the lattice-boom crane sector. Source: IC

On the 7th of January 2012  at the Sembawang Shipyard in Singapore Subseas 7  SEVEN BOREALIS pipelay and construction vessel 

was named by Lady sponsor Mrs Filomena Maria Gamboa Carvalho dos Santos e Oliveira, after the ceremony it was time for presents exchange, when Captain Alec of the SEVEN BOREALIS received some nautical instruments from Mr Jean Cahuzac, the CEO of Subsea 7 and on the right below, Mr Jaap Klein (Left) the project manager for Subsea 7 who received a very nice picture frame as a “thank you” for all the work done during the time at the Sembawang shipyard in Singapore, after several speeches it was time for the tour over the 182 mtr long x 46 m wide  Pipelay/Heavy lift vessel. The engine controle room from where the 6 Rolls Royce B32 V12A 720 rpm diesels and the rest are controlled , every engine is having an output of 5760 kW.          At the front of the wheelhouse is seen the maneuvring panel and right a part of the DP desk at the back of the wheelhouse. Top the large galley, which is designed to supply the food for the (max) 400 persons onboard, who are accomodated in the cabins (max 4 in 1 cabin) onboard the state-of-the-art vessel. To handle the pipes onboard are 2 DREGGEN 40 ton capacity knuckleboom cranes installed, one on each side of the vessel and at the stern of the vessel the large 5000 ton (at 40 mtr) Huisman built main crane can be seen (1500 ton at 78 mtr radius) , the crane is having a maximum operating waterdepth of 6000 mtr (Single fall), Half of January the last DP trials are scheduled and afterwards the vessel will sail from Singapore via

 Cape Town to Schiedam where at the Huisman yard the J-lay tower will be installed, the voyage to Schiedam will take 42 days. All photo’s : Piet Sinke ©

SOURCE: MDC and Subsea7 

Jumbo transported two huge Ship-to-Shore Kalmar cranes,

combined with a total of 7 knocked down RTG’s from Taicang, China to Cartagena,
Colombia for its client Cargotec. Since the STS cranes were too big to handle in their fully assembled shape, both cranes were shipped in (still respectable) parts to fit Jumbo Javelin’s deck and cargo hold. Because of the enormous width, height and weight of the cranes and in order to remain within all safety margins during the long sea voyage, special support and sea fastening structures were engineered by Jumbo together with the client.
The crane structures, weighing up to 1,000 t per piece, reached 80 m above deck and protruded 30 m on starboard side of the vessel. Smart engineering and precision planning made it possible for Jumbo to transport the two STS cranes for Cargotec in one voyage from China to Colombia. The lower portal and upper structure of the first crane were lifted and placed on deck separately. The complete middle piece of the second crane was lifted on deck at once in a tandem lift. The supporting width of the cranes was bigger than the width of the vessel, so Jumbo together with the client engineered special support constructions on deck and at the outside of the vessel. On top of this, the upper structures needed to be tilted to make sure it didn’t hit the water during sea transport. With its SPOS and Octopus systems and cooperation with Meteo Consult Jumbo calculated the best sea route to avoid high waves and strong winds. With the cranes protruding on starboard side, the roll movement of the Jumbo Javelin had to be minimized. Because of careful preparations, and the selected sea route, the cargo was delivered in Cartagena, Colombia safely and on time.