Page 104: of Maritime Reporter Magazine (November 2012)

Request for Quotation for the Major Overhaul ofTwo (2) 3508B Caterpillar Generator Set Engines on Board R/V Kilo Moanain Honolulu, HIin the February 2013-January 2014 Time Frame POC for detailed RFQ-J.Nikola 808 216 3413, [email protected] Proposal Closing Time and Date 1530 14 December 2012 Hawaii Local Time PRODUCT FEATURE HEAVY LIFTING more, they develop entire special-purpose vessels based on customer specifications along with proto- types of their own design, like a jack-up service vessel (for servicing offshore plants) and a heavy lifter. The basic designs of these prototypes can be adapted tospecifications of the relevant customer. Additional staff can be brought in for different proj- ects to expand the core team at HeavyLift@Sea and make it even more flexible. ?Everything we do, we do from the position of chief engineering, which means we are always focussed on the ship's system as a whole," explains Hendrik Gröne. ?We ensure that the basic concept and the initial idea behind the vessel are observed at all times and remain in place throughout the building process." One of the first projects that HeavyLift@Sea took on was the development of a chain hoist for the offshore installation of a natural gas field on the sea floor in the eastern Mediterranean. Alongside customer projects, the engineering company also works on a research contract with the Hamburg University of Technology on the subject of ships, cranes and seas.New Offshore Electric Winch Cargotec debuted its new range of electrically-dri- ven offshore winches, electrically-driven versions of its range of offshore MacGregor anchor handling/tow- ing winches (eAHT). "This new series of electrically- driven winches inherits the best characteristics of our proven designs," said Francis Wong, Cargotec's Sales Director for offshore winch solutions. "This ensures safe operations, easy maintenance, and also combinesimproved operability with a low environmental impact, reduced power consumption and low installation costs." The eAHT series includes winches with line pullsranging from 200 to 600 tons, with an initial speed upto 25 m/min and with a brake holding capacity up to 800 tons. Each winch is available in double- or triple- drum configuration to meet various designs and oper- ational requirements. The drums are designed to carry a huge capacity of steel wire rope, as well as large di- ameter low specific weight fiber rope. The extended shaft connections at both ends of the winch are suit-able for fitting chain wheels to handle chains ranging from 76mm diameter up to 160mm diameter. The winches are driven by an AC variable frequency electric motor through an enclosed helical bevel gear- box. They also feature a freshwater-cooled hydraulic or pneumatic disc brake system allowing smooth changing between operational speed modes, fromstatic to dynamic and during dynamic-lowering oper- ations. They also have a regenerative multi-drive sys- tem, which is designed to help save space, reduce wiring and provide greater redundancy. The regenera- tive energy can be easily fed back into the ship's main power system using Active Front-End (AFE) technol- ogy which has ultra-low harmonics capability; alter- natively it can be dissipated through the braking resistor. The winches are equipped with independent electro-hydraulically or fully electrically-driven spooling de- vices, which can be supplied as separate units for theyard to install on the winch compartment bulkhead or on the deck. The winch and spooling device can be controlled both locally and remotely from the wheel-house. All control features, including the length, speed andtension-monitoring system, are incorporated in one ortwo touch screens and remote control panels. Alterna- tively, these controls can be integrated into an er- gonomically-designed operator chair with two joysticks located in the armrests. Hendrik Gröne and Lars Rolner, founders of HeavyLift@Sea MR#11 (98-105):MR Template 11/6/2012 10:20 AM Page 104