Page 55 - Wire Rope News & Sling Technology - June 2019
P. 55

         testament to  the  strength  of  partner-
         ship we have been able to forge even
         over the past two years. The [SP] range
         is more advanced than alternatives on
         the market and it’s evident that great-
         er investment has been made in prod-
         uct development, which is important to
         Saravanan and his team.”
           Saravanan added: “Generally busi-
         ness is good. We are looking forward to
         a long-term  relationship  with  Crosby
         [and SP]. When new  innovations  are
         launched,  we  want  to  be  among the
         first  to  put  them  to  market.  We  have
         a good rapport with end users and are
         constantly trying to covert our custom-
         ers to the equipment we on-board.”
         Modulift Beams Lower
         Vessel Into Water for
         Maiden Voyage
           UK-based Osprey Ltd., a specialist
         in  the  onshore  and offshore  transpor-
         tation and lifting of heavy or abnormal
         loads, lifted a 72.5t catamaran using a
         1,000t capacity Liebherr mobile crane
         and a one-over-two  Modulift  spreader
         beam  configuration  beneath  its  hook.
         The rigging gear was sourced from
         FLG Services, the specialist lifting di-
         vision of A-Plant.
           Osprey accepted a scope of work from
         shipbuilder Wight Shipyard to move the
         vessel from the shed where it was built
         to the water at Venture Quays, Cowes on   250-passenger Twin City Liner is 39.7m   vessel, we used two cranes in tandem,
         the Isle of Wight, before a course was set   long, 11.1m wide, and 6.8m high.  but mobilizing two cranes of that size
         for its final destination in Austria. The   The first challenge was removing the   represents a large-scale operation and
                                            vessel, which is due to arrive in Vienna   high costs, not to mention the disrup-
                                            in time for the start of the new season at   tion it has on the shipyard. We wanted
                                            the end of March 2019 from its building.   to come up with a way to minimize mo-
                                            Osprey selected two, six-axle Goldhofer   bilization and limit the impact on our
                                            self-propelled modular transporters   client’s busy, marine environment.”
                                            (SPMT) to work in tandem to move the   Uncharted waters
                                            load to within the reach of the Liebherr   Osprey consulted Modulift and FLG
                                            LTM1800D. The crane was complete   Services, principally on utilization of
                                            with a 36m high rig, designed to accom-  the MOD400 at 29m, which usually has
                                            modate a 3.7m center of gravity offset   a maximum span of 24m. Sue Spencer,
                                            and  different  elevations  of  the  boat’s   Technical  Director  at Modulift,  said:
                                            lifting eyes. A Modulift MOD400 was   “It was more cost effective and conve-
                                            used at a 29m span beneath 29m long   nient for Osprey to source  the beam
                                            and 26.4m long top slings to balance the   from a rental partner versus a custom
                                            lift. Two MOD70H beams were used un-  designed product. Our technical team
                                            derneath, one at 5.5m long and the oth-  looked into the feasibility, and came
                                            er at 4m. Again, two different lengths of   up with  a solution  whereby  a central
                                            sling were used to connect them to the   support sling system would be required
                                            top beam—3m at the stern (back) and   to support the self-weight of the main
                                            3.9m at the bow (front). The slings that   spreader beam to minimize any po-
                                            met the lifting eyes at the bottom of the   tential deflection—and this adjustable
                                            rig were all 4m in length.         sling system would need to be attached
                                              Danny Skidmore, heavy cranes man-  vertically to the crane hook.”
                                            ager at Osprey, said: “We had to work   She  added: “We devised a design
                                            closely with shipbuilders and naval ar-  whereby the tension load in the central
                                            chitects,  and  refer  to  CAD  [computer-  sling could be monitored using a wire-
         The MOD400 was used at 29m in length; it
         usually has a maximum span of 24m. A central   aided design], to devise a method of lift-  less load link to ensure that the sling
         support sling supported the self-weight of the   ing the catamaran safely and completely   was  carrying  the  correct  share  of  the
         spreader beam to minimise its deflection.  level. The previous time we lifted such a   continued on next page

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