TURELLA: LARGE WARTSILA-BUILT FERRY FOR VIKING LINE

An impressive 10,600 gross ton passenger/vehicle ferry featuring a novel car deck system for operation between Finland and Sweden. The vessel was completed in only 14 months by radical use of critical path analysis techniques and is powered by four 6,000 bhp Wartsila-Pielstick engines driving Kamewa skew-back propellers for a 21.3 knot service speed. An unusual building technique enabled Wartsila to construct "Turella" in a very short time. She was handed over on June 4, eleven days ahead of the scheduled delivery data; this meant the ship had been completed (including design) in 14 months, about half the time normally taken to build such a ship. Wartsila claims that the greatest contributing factor to the rapid completion was the formation of a special project group, whose job it was to create a strict design and construction scheme, and maintain its observance. Within the group, men from the drawing office, the outfitting department, and the central planning office enabled responsibilities for particular jobs to be identified at a level very close to the workshop floor. The control was manifested in this way: "Turella" was split into 50 divisions such as bridge, funnel, engine room; Accurate calculations were made to determine how long each division would take to complete; A comprehensive time chart was then drawn up to show how soon the longer jobs had to be commenced so that they would be completed at the required time (to ensure no hold-ups occurred in subsequent stages.) One particularly advantageous move was to have simplified drawings sent to the various division leaders, so that building could be commenced while the drawings were being completed. Secondly, within each division unions agreed that all men could perform all types of jobs--this saves a great deal of time if, for instance, a "welder" can be employed on pipe fitting. Although the technique used, sometimes known as "critical path analysis", is not completely new, it was the ruthless way in which the yard met deadlines and kept to schedules that enabled the ship to be finished swiftly. Also, it appears that a great deal of communication took place between engineers, technicians, drawing office staff, and workers, a facet from which more yards could perhaps benefit. Altogether, in the building of "Turella", Wartsila has managed to iron out many of the modern ferry's problems, whilst at the same time produce a ship with a very high standard of finish throughout in a very short build time.

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  • Corporate Authors:

    IPC Industrial Press Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Publication Date: 1979-10

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  • Accession Number: 00307529
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 11 1980 12:00AM