Ana sayfa Haberler Dosya Creating ‘a gold standard’ in detail design

Creating ‘a gold standard’ in detail design


“The design of ships is a complex endeavor requiring the successful coordination of many disciplines,” SEFT Design & Engineering General Manager Semih Zorlu writes for MarineDeal News

Design is an iterative process, which is difficult to capture in a model. The design spiral to the left is a traditional way of “capturing” the ship design process. As the design progresses, it converges to a single point. Each baseline is a new iteration of the design. The design spiral does not show the interaction between the engineering areas as iterations progress. Within the spiral, there are internal spirals which are the different engineering groups iterating their own work in that iteration’s baseline.

The design of ships is a complex endeavor requiring the successful coordination of many disciplines of both technical and non-technical nature, and of individual experts to arrive at valuable design solutions. Considering that ship design should actually address the whole ship’s life cycle, it may be split into various stages that are traditionally composed of the;
– Concept/preliminary design,
– The contractual and detailed design,
– The ship construction/fabrication process,
– Ship operation for an economic life and scrapping/recycling.

It is the evident that an optimal ship is the outcome of a “holistic optimization” of the entire, above defined, ship system over its whole life cycle.

Nowadays commercial shipyards which focused on new buildings, Navy shipyards and even the yards dedicated for retrofits are fully realizing the significant benefits of using “fully digitalized 3D model and detail design” in shipbuilding and retrofits. These benefits include reduced construction cost, improved quality and reduced construction time.
During the last decade, many shipyards have made major improvements in the way ships are produced, adopting zone-oriented and related modem construction techniques. Effectively implementing these shipbuilding advances has frequently required changes to the specifications, drawings and other contractual documents typical of a ship contract design package. Effective detail design is particularly important with regard to special constructions.

During 2017-2018, SEFT has walked with Cemre Shipyard as a solution partner in the challenging way of shipbuilding with changing standards and increasing performance requirements of “Service Operation Vessel Project – NB53.” Havyard Design & Solutions provided the Havyard 831 SOV design and equipment package for the Cemre shipyard, which built the vessel and delivered it to Esvagt in 2018. Contract design documents shared with Cemre Shipyard for project management, production and delivery of the vessel. Detailed engineering was the phase of the project which SEFT has involved for the mentioned vessel and SEFT built virtually in 3D digital environment in order to provide necessary manufacturing information to produce the final product. The SOV will be used to service offshore wind farms.

To shorten delivery times SEFT engineering teams worked in concurrent manner when detailed engineering was overlapping with basic design phase. SEFT was very good in managing of changes in the design while keeping quality and delivery time towards building yard untouched. During the detail design stage SEFT quickly and efficiently produced detail design, project support and design visualizations. Since the concept is done fully digitally in 3D from the very beginning, the client had a chance to utilize the advanced virtual reality technology when reviewing the results and ensuring that the ultimate outcome fulfills its specific requirements.

Space reservations were checked and necessary definitions for the location of various main items were accomplished. The ship-wide routing of piping, ducting and cabling were made to prevent any discontinuity in design at areas of interface. The basic design diagrams for piping, the main cable trays and ventilation ducts were brought on top of the space arrangements and layouts, taking into consideration the structural arrangement as well. Detail design and engineering were carried out in accordance with the building method selected by Cemre Shipyard.

SEFT managers declared that “The close cooperation with the ship owners and Yards is a key factor in the process of designing specialized vessels. Experience and know-how are transferred and incorporated into the designs in close cooperation with the yards, ship owners and representatives in the maritime industry, operators and equipment suppliers.”
Customer satisfaction surveys reveal that SEFT leads in serviceability and flexibility compared to competitors of SEFT. The success behind this project is summarized by SEFT managers: “We work in every stage of the shipbuilding process; sending engineers into the shipyard and work in close corporation with shipyards’ managers to ensure the project progresses smoothly. In our experience, the amount of time and effort invested at the beginning is a key component of project success. After all it is much easier to change drawings on paper than in built steel. Therefore we work closely with the shipyard at the beginning to better define the requirements and boundaries.”

A short introduction for SEFT:
SEFT is owned by four founding partner who have expertise in different disciplines of Marine Engineering within ship design & solutions, shipbuilding, power & control systems, structure and outfitting.
SEFT specializes in new build design and basic engineering for a wide range of ship types including general cargo vessels, chemical tankers, tugs, workboats and vessels for the offshore, seismic, research vessels, sailing power ships, combatant and auxiliary naval ships, passenger transport and fishing boats.

Strategically located in the middle of Europe and Asia, SEFT experienced teams provide a full range of consultancy, naval architecture and marine engineering services including vessel refit and conversion, structural and stability investigations.
Since 2001, the SEFT brand has been associated with innovation and quality in design and delivery. Vision of SEFT is to be a strong trademark in global market that creates innovative platforms for ship building industry and to create tomorrow’s solutions for defense industry.

Across the time, SEFT has stepped up with the innovations that secure the position:

– Serving in the maritime industry with the launching of some very interesting and important vessels with different types and sizes for many years.
– TCG ALEMDAR has been designed and she is the most capable submarine rescue vessel in Eastern Mediterranean and Black Sea region.
– TCG AKIN has been designed which will be equipped by the modern rescue systems and equipment such as remotely operated vehicle (ROV), atmospheric diving suit, submarine ventilation system, pressure rooms etc., can also perform the underwater repair works and wreck removal.
– MTA ORUC REİS has been designed which is equipped for hydrographic, oceanographic, geologic as well as seismic operations.
– World’s biggest POWERSHIP Karadeniz Osman Khan been designed and working at Ghana, Tema Fishing Harbor.