class software
can utilise the information across the fleet and operators can do benchmarking exercises with this software. Shipowners can do more than hull condition tracking on one ship. They can learn from problems encountered around their fleets. They can work out how to be even more effective in maintenance when using the information from sister vessels, gaining information on how to handle any failures and repairs,” says Mr Wold. A similar set-up exists in Germanischer Lloyd’s
HullManager software, which models structures for inspections and repair planning. It allows crew to produce reports on hull condition and see previous reports. Data is stored in a lifecycle database that enables fleet managers to compare the condition of sister vessels. “GL HullManager uses a 3D model of the
vessel to show actual plates and stiffeners or frames of each tank or other space in the ship,” explains GL’s head of computer-aided engineering, Christian Cabos. “Inspection forms with images of the structural members of the inspected tank can be printed out to mark findings and positions on photos using a pen during the inspection. This information can be entered into the software in an easy onboard interactive process with the 3D model.” There is a dashboard overview of the entire
ship, highlighting any critical findings by crew or third-party inspectors. There are guidelines for rating defects and a checklist based on IACS recommendations. Information can flow from the vessel to the shore offices, and can be integrated with thickness measurements for an owner’s maintenance system. Hull condition management has been
incorporated into ABS’s new nautical systems (NS) program NS5 Enterprise (Tanker Shipping & Trade, August/September 2011). The inspection module is a browser-based tool that helps track the structural condition of a vessel throughout its service life. Tanker owners can use drawings of the vessel to visualise hot spots and critical areas such as inside cargo tanks. Owners can examine and grade the hull
structure of each vessel and review fleet-wide statistics and trends for condition monitoring. The software has tools for scheduling, recording and reporting inspections, with areas for attached photos. Structural design and compliance guidelines
are included in ClassNK’s new PrimeShip-Hull 5.0. The software has been written to assist in ship design processes. “PrimeShip-Hull allows users to perform prescriptive rule checks and direct strength analysis based on CSR for tankers,” says development manager Toshiyuki Shigemi. “It allows shipyards and designers to shorten design processes and aids in the completion of preliminary and advanced design work and easy modelling. Some advantages include allowing a large number of design
24 I Tanker Shipping & Trade I October/November 2011 in brief
• As part of the upgrade to SeaTrust, Korean Register launched SeaTrust-SLM (Ship Lifecycle Management) as an application to create 3D ship models covering information relating to all phases of a vessel’s lifecycle from design to demolition.
• To help tanker owners calculate fuel consumption and gaseous emissions, Bureau Veritas introduced the ship energy efficiency tool SeeCat. This combines ship models and simulation to calculate SOx, NOx and CO2 emissions.
Dino Cervetto (RINA): “Leonardo Hull supports tanker lifecycle requirements”
processes to be performed more easily, accurate rule calculation checks, and quick output of calculation results.” PrimeShip-Hull has several automated
functions including auto-identification of structural members from FEM. New features added in version 5.0 include complete ship calculations, inclusion of fore and aft cargo hold regions, and incorporation of easily viewable models that allow designers to save time when checking inputs and reviewing calculation results, Mr Shigemi adds. Korean Register has updated its integrated
structural analysis tool SeaTrust ISTAS to cover structural safety assessments, full spectral fatigue analysis, shaft alignment analysis and ship lifecycle management. This included new analysis tools for tanker motion and wave load analysis, and strength assessment for newbuildings and existing vessels. SeaTrust ISTAS covers analysis of loads on
hulls, FEM, buckling analysis, and simulation of ship motion, waves, stress and displacement. The software provides information on a tanker’s structural behaviour in all sea states, and the performance of the structurally weak parts in real wave conditions, says KR. Bureau Veritas has introduced its Homer
software, which couples 3D hydrodynamics with 3D finite element structural analysis. This enables assessment of structural designs and the interaction with water. Homer has post-processing tools for hydro-structural analysis, says BV’s head of the hydro-structure section, Sime Melenica. The range of analysis includes extreme loading
cases for yielding and buckling, fatigue life assessment, multibody interactions and modelling of seakeeping and sloshing. Linear and nonlinear domain models, hydro-elastic structural responses and fine meshing models are included. Meanwhile, Lloyd’s Register has enhanced its
Mariner operational risk management software to allow tanker owners to identify and manage onboard safety and security risks. TST
• Tanker damage stability and loadings can be calculated by Polish Register of Shipping’s StabPRS software. This provides information on intact stability, general strength of any loading condition, and changes in stresses during vessel movements.
• There will be closer co-operation between Lloyd’s Register and the Indian Register of Shipping with LR chief executive Richard Sadler looking to double the organisation’s income from India in the next three years.
• Shipowner and repair group China Shipping has signed a co-operation agreement with China Classification Society (CCS) for combined research and technical support. CCS will survey ships repaired in the group’s yards and in- service vessels.
• Bilateral agreements have been set up by the Croatian Register of Shipping with Det Norske Veritas, Bureau Veritas and Lloyd’s Register, covering the certification of quality management systems.
• Mikhail Ayvazov is the new director general of the Russian Maritime Register of Shipping. He has worked in senior roles at Russian shipyards and investment companies.
• Italian class society RINA is developing a calculation tool and helping shipyards and tanker operators meet EEDI requirements.
• RINA has been officially recognised as a competent and authorised authority to carry out classification and statutory services for ships registered under the Kazakhstan flag.
• ClassNK has issued its first Type Specific Training Course approval for an ECDIS Training Course offered by FURUNO INS Training Center Singapore.
www.tankershipping.com
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