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Consequently, function and component of modern integrated shipboard system, from point of meeting certain standards, safety, communicability and conditions of signal and data processing have been analysed in this paper. Key words: integrated shipboard system, ARPA. l. INTRODUCTION The technologies on board, whether in navigation, communication, or ship operation equipment, have in the last few decades been continuously developed to suit the changing requirements. For the future, these requirements mean more than ever that, as links in a complex transportation chain, ships must be capable of being operated not only at high speed but also - and above all - economically. In practice, systems for comprehensive communication, navigation and automation often involve a degree of complexity that is almost impossible to handle. In contrast, the integrated bridges Ship Control Centeri or Norcontrol BridgeLine 2 offers the future-oriented solution for important tasks of ship-handling. By optimum structural and economic design of the bridge and by the integration of all necessary display and operating elements in modularly constructed consoles, integrated ship's system makes a significant contribution towards increasing the profitability of ship operation. The bridge is clearly laid out and easy to use. Within the relevant requirements, duplicated functions are reduced and functions are confined to the essentials. The most important factor in the search for new solution is extensive use of the latest available information tehnology. The performance of today's commercial available systems is so high that they do not represent a practical limitation to ship applications. The basic features of shipboard integrated systems from the point of view of the application of the most recent information technology, as well as the efficiency and safety of the system as required by the regulations issued by classfcation societies will be dealt with below. 2 A NEW MODULAR CONCEPT FOR BRIDGE CONFIGURATION BASED ON INTEGRATED SHIP CONTROL (ISC) As the sole supplier in the world of both advanced Integrated navigation System and Integrated Alarm, Monitoring and Control systems, Norcontrol is for the first time presenting a total solution for the ship. The concept is based on a set of standard console modules which can be configurated to comply with the latest rules for nautical safety. The bridge console is based on a console design which gives the recommended field of vision and a view of the sea surface from various workstations. The different console modules will include the necessary equipment for various workstations. An optimum solution based on Norcontrol systems is shown in Figure 1. Figure l. illustrate the following workstations: 1. Redundant workstation for engine/cargo alarm, monitoring and control 2. Redundant workstation for combined radar display , ARPA end electronic charts  Ship Control Center for STAN ATLAS Electronic  NORCONTROL BridgeLine fi-om NORCONTROL 3. Workstation for propulsion and steering 4. Conning display 5. Workstation for navigation 6. Workstation for manual steering Fig. l. Bridge configuration based on Norcontrol Integrated Ship Control Workstation for safety operations, route planning and communication are not shown in the illustration, but are included in the total concept. The heart of the ISC is the two redundant workstations, each with the 29" resolution colour display. The display has different modes: - Radar display with the same functions as an ordinary radar display - ARPA display with the same functions as an ARPA system - Extended ARPA with presentation of electronic charts - A combination mode with three layers of information on top of each other with the radar in the bottom, the ARPA in the middle and the electronic chart on the top. All navigational activities are integrated into one workstation which is duplicated. Any brand of radar scanner and tranceiver can be connected. The workstation is connected to navigation instruments, propulsion control system and autopilot for automatic control of both speed and heading of the ship. The combination of navigation and propulsion control systems opens up for several new fuel optimization functions and a more favorable overall operation cost. Essential information is presented on the conning display. 3 SYSTEM CONFIGURATION AND FUNCTIONAL SPECIFICATION The ICS allows for information exchange between different computer based monitoring and control system on board sea-going vessels (Fig. 2).The integration will only handle information exchange. Each monitoring and control system in the network will function according to the classification requirements without the net in operation or with the system disconnected from the net. All systems are connected in a Local Area Network (LAN). 3.1 Equipment and integrated systems The basic standard for bridge arrangement of equipment is set by IMO guidelines for "Single-man watch-keeping" and "Navigation bridge visibility", including the ISO standard for "Bridge layout and associated equipment". This level is regarded as "a minimum requirement" for the modern ship built today. nmeЗs- e.erЗxЗ r Fig. 2. Integrated Ship Control (Main Systeyn) Fig. 3. Configuration of BridgeLine 2000 Further improvement of navigational safety and efficiency in bridge operation by state-of the-art integration and automation is the aim of specific class notations for bridge systems issued by classification societies. The notations are to be complied with on a voluntaiy basis today, but point to future newbuilding standards. The upper level of classification standards is DNV's class notation Wl. BridgeLine. BridgeLine is developed both to optimise the bridge system within the minimum requirement standard and to meet the shipowners' requirements for advanced bridge operation at minimum cost. Having established close relations with maritime authorities and classification societies, Norcontrol has also been able to incorporate future legislative requirements in the BridgeLine standards and organized the different levels of system integration for easy upgrading in accordance with the future international standards. The purpose of integration. The main puipose of the BridgeLine integrated navigation system is to enable planning of a safe route, to make sure that the ship follows the route, to detect fixed and moving dangers to navigation, and to ensure safe collision avoidance manoeuvres and return to the route. Levels of integration. The system configuration necessary to achieve the purpose of integration has two levels. The first level includes a system for safe route planning, information processing and automatic detection of navigational dangers. This level is based on manual adjustment of course and speed in accordance with the information provided by the system. The second level includes, in addition to automatic execution of course and speed adjustment as required to follow the route, a system enabling the navigator to monitor sensor input data and the performance of the automatic system. System components. The main components of an integrated system today are the satellite assisted Global Position System (GPS), the radar/ARPA, the electronic chart system meeting IMO/IHO standard (ECDIS) for monitoring and route planning functions and the remote route planning system based on paper charts. Further integration with track-pilot and propulsion system extends the integrated system into an automatic system for continuous route-keeping with the accuracy of the positioning system. 3.2 BridgeLine standard levels of integration The standard instiumentation and system integration comprises three levels, BridgeLine 2000, 2010 and 2020, ranging from the level of IMO single equipment standard, through an integrated navigation system, to a fully automatic navigation and track-keeping system. BridgeLine 2000 equipment standard is governed by IMO guidelines for "Single-man watch- keeping" and DNV's class notation Wl-OC and similar class notations issued by other classification societies. BridgeLine 2000 standard configuration includes a dual DataBridge radar/ARPA system, a conning information display system presenting vital navigation and manoeuvring data, a second reception system and bridge watch monitoring and alarm transfer system. BridgeLine 2010 represents an advanced standard for "integrated navigation systems" covering all common specifications for such system based on current technology for electronic chart systems and international standards. The main components are SeaMap electronic chart system (ECDIS) and the DataBridge multifunction radar/ARPA/ECS, combining the display and control of radar/ARPA, electronic charts, planned route and ship's position on the same screen. BridgeLine 2020 incorporates all functions and features of 2010 and is further extended by including a chart digitising and remote route planning system,CPL2, as well as Norcontrol's system for global automatic navigation and track-keeping, GANTS, and automatic speed adjustment. The total system confguration and operational performance of BridgeLine 2020 meet the requirements issued by any governmental maritime authority or classification society for one-man control of bridge operations, including DNV's class notation W 1. 3.3 BridgeLine system configurations An overview of the system configuration and system components for different standard configurations of BridgeLine proves the simplicity and effciency of the system and the upgrading potential without physical changes of the bridge arrangement. This overview also demonstrates the compliance with different levels of international rules and requirements. BridgeLine 2000 meets the guidelines specifed by IMO for "Single-man watch-kee in " the ISO standard for "Bridge layout and associated equipment" and relevant class notations ispњ d by any of the classification societies, including: З Wl-OC, "Watch One, Ocean Areas and Coastal Waters", Det norske Veritas - DNV З NAV-O, "One-Man Control Console", Germanischer Lloyds (GL) З LNC(AA), "Periodic One Man Watch" Lloyds, England З MARK CNC, "Centralised Navigation Control", Bureau Veritas, France (BV) З OMBO, "One Man Operated Ships", American Bureau (AB) З NAV OMBO, Registro Italiano Naval, Italy (RINA) Some class notations may require specific equipment which is not included in the other class notations on this level, in which case the standard range of equipment is adjusted as required for ships to be assigned the relevant class notations. 3.4 Standard system configuration The basic equipment of BridgeLine 2000 is a part of all BridgeLine systems and prepared for further-integration. The configuration comprise a dual radar/ARPA system, dual positioning system, central conning display system with slave displays as required, gyro and transmitting magnetic compass, autopilot, sound reception system and a bridge watch monitoring and alarm system. The autopilot may be integrated for way-point steering. 4 CONCLUSIONS The vision of the "Ship of the future" has become reality: from the concept stage through development and design right up to manufacture and world-wide service, ISC from Norcontrol provides a ship's bridge which distinctly increases the economy of use and the safety of ship operation. The following elements have been identified as building-cost reduction and as life-eyeball cost factor: - Reduction in cabling installation cost by the installation of ISC concept which has distributed processing, with the possibility for optimum combination of centralised and distributed installation; - Reduction in commissioning period by selecting on ISC concept with well proven type approved standard distributed modules; - The selected supplier of ISC will revise the purchase order specifications issued by the yard for equipment which are interfaced to the ISC. This will reduce the possibility for additional cost due to incomplete specifications; - Introduction of the ISC reduces the workload opens up for warning reductions, low warning; - Optimizing functions in the ISC reduces the overall fuel consumption ; - The ISC increases the safety. The ISC reduces the risks of human errors and the costs related to accidents and incidents; - The ISC modules are serviced by the crew. Reduced cost for service. All modules have interchangeable parts. Reduced cost spare parts; - Reduced life-eyelet cost increases the competitiveness of the ship; - The ISC opens the door to a number of class notations. 5 REFERENCES (l Munden, A. , One Man Bridge Operation, London,1990. (2 Sablic, N.,Raspored opreme i uredaja na zapovjednickom mostu, Brodogradiliste Uljanik, Pula,1994. (3 * * * Norcontrol - DataChief -2000, Functional Specification, Horten, Norway,1995. (4 *** Norcontrol - Integrated Ship Control, Functional Specification , Horten, Norway,1995. (5 * * * Norcontrol -Power Management Specification, Functional Specification, Horten, Norway,1995. SPECIFICNOSTI SUVREMENOG INTEGRIRANOG BRODSKOG SUSTAVA ZA UPRAVLJANJE I NADZOR SAZETAK: Integrirani jedinstveni elektronicki sustav temelj je suvremene kompleksne brodske automatizacije, sto podrazumjeva upravljanje strojevima i mehanizmima, brodskom energijom i procesima na brodu, bez covjekova sudjelovanja, ali uz cjeloviti uvid u stanja i mogucnosti tijeka dogacanja. U svezi s tim u referatu su analizirane funkcije i sastavnice suvremenih brodskih integriranih sustava sa stajlista udovoljavanja sztanovitim standardima, sigurnosti, komunikativnosti i uvjetima zadane obrade signala informacija. 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