Page 22: of Maritime Reporter Magazine (September 1985)
Shiplift/Drydock (continued) go, ordered in late 1982 as part of the yard's modernization plan. The computer-operated, self-maneuver- ing land transfer drydock is a major unit in SMI's $35-million renova- tion of the San Diego yard. The modernized facilities exceed all U.S.
Navy requirements, and allow the yard to effectively service all types of naval and commercial vessels.
Built by Kawasaki Heavy Indus- tries in Japan, the Pride of San Die- go dock has many innovative fea- tures. It is capable of transferring 10,000-ton ships (cruiser/destroyer types) from dock to shoreside plat- forms using a new transfer method.
Another feature is its ability to transfer ships with its computerized control system, regardless of tide changes.
The Pride of San Diego is equipped with remote-controlled,
Pearlson Syncrolift and Transfer System at
Todd Pacific San Pedro yard. articulated dock arms that, in most cases, will reduce the need for stag- ing that is normally required. The dock is cathodically protected against corrosion, environmentally safe, and completely energy self-suf- ficient.
Part of SWI's modernization at
San Diego is a new 700- by 60-foot pier that can serve ships with drafts of up to 35 feet. A new 65-ton gantry crane was installed to service ships at the pier and in the drydock.
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A $47-million Syncrolift shiplift and transfer system, currently the largest and most technologically ad- vanced facility of its kind in the world, was dedicated last year at the
San Pedro, Calif., yard of Todd
Pacific Shipyards Corporation's Los
The Syncrolift is a product of
Pearlson Engineering Company of
Miami, the world leader in shiplift technology and the only firm in the world devoted exclusively to the de- sign and manufacture of shiplift systems.
The San Pedro installation is de- signed specifically for construction and repair of naval surface com- batants, but it is also suitable for commercial vessels. The system in- creased the Los Angeles Division's new construction capacity by 100 percent and its repair capability by 250 percent.
The Syncrolift permits the San
Pedro yard to perform multiple dry- dockings with one lifting platform that hoists a ship from the water to land level, where it is towed onto a side transfer carriage and moved to any of five work areas. The plat- form, which can be used as a sixth work station during peak periods, is powered by one hundred and ten 15- hp electric motors. Lifting speed is approximately nine inches per min- ute; the designed maximum lifting time is 72 minutes.
The platform, which measures 655 by 106 feet, can handle ships with overall length of 780 feet and beam of 105 feet. Maximum lifting capacity, when docking directly on the platform without a cradle, is 22,000 long tons. Maximum draft over the cradle is 32 feet.
The new shiplift system will en- able the Los Angeles Division to achieve productivity gains resulting from: multiple access to vessels un- dergoing overhaul and repair; better material handling and flow, includ- ing prepositioning; accelerated pre- outfitting of modular units for new hulls under construction; use of the shiplift as a launching platform in lieu of, or supplementing, new con- struction in progress on the inclined ways; lessening of environmental constraints by working ships on land instead of at a wet berth; and mechanical/electrical utility conser- vation, including recycling of used blasting grit.
The design of the strategically placed mechanical manifolds, multi- service electrical stations, and crane services at the work bays provide full service to single- or double-ship berths. The demands for each bay were developed using peak loads and other requirements as stipu- lated for fully crewed Navy ships.
Every anticipated requirement of the ship repair and modular assem- bly options, including at the land- level berths, was given full consider- ation. Comparable services were de- signed for installation at the lifting platform to satisfy production re- quirements at that location.
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TTS DWB walking beam units.
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Total Transportation Systems,
Inc. (TTS) of Newport News, Va., recently delivered a dual "walking beam" transporter system to Ma- rinette Marine Corporation in Ma- rinette, Wise. Said to be the first of its kind in the U.S., this system con- sists of eight 200-ton walking beam units, and has been designed to be expanded to handle 3,200 tons by attaching additional walking units.
The dual walking beam is an extremely compact hydraulic trans- porter system that has been used not only to move large ship sections, or even a complete ship, but will also fit or regulate the sections dur- ing the actual construction of the vessel. The system can operate on most rough-graded surfaces without any foundations or walkways. The precise movements of the hydraulics combined with the design of the walking unit.make the dual walking beam a highly effective shipyard tool.
Kenmark Industries of Santa
Barbara, Calif., a wholly owned sub- sidiary of TTS, recently designed and delivered a 200-ton, twin-lift hoist system to Marinette Marine, unique in that it has winches lo- cated on only one side of the vessel.
This feature maximizes the flexibili- ty of the shiplift by offering im- proved access to the vessel. It also allows easier transfer of the vessel on and off the shiplift platform from either the free side or from the end.
This configuration is of special interest to the shipyard owner who wishes to make the most of the valu- able land surrounding the shiplift for construction or repair activities.
In addition to the improved ar- rangement, the twin-lift hoist sys- tem design reduces both the initial capital and the maintenance cost of the shiplift.
Kenmark has just received a con- tract from Hyundai Heavy Indus- tries in South Korea for a jacket loadout and launch system. With a capacity of 20,000 tons, this system will consist of two hydraulic power units and a number of jacking units of the gripper design. HHI intends to use the jacking system for the loadout of the San Miguel jacket now under construction at its Ulsan yard. This system can easily be expanded to handle larger jackets in the future.
Circle 304 on Reader Service Card 22 Maritime Reporter/Engineering News