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IMO PERFORMANCE STANDARDS FOR

INTEGRATED BRIDGE SYSTEMS (IBS)

(FOR MMD PHASE- II EXAMINATION PURPOSES)

An integrated bridge system (IBS) is defined as a combination of systemswhich are interconnected in order to allow centralized access to sensorinformation or command/control from workstations, with the aim ofincreasing safe and efficient ships management by suitably qualified

personnel.

IBS should comply with the following performance standards:

1. The IBS should comply with all applicable IMO requirements andrecommendations. Parts executing multiple operations should meet

the requirements specified for each individual function they control,monitor or perform.2. Each "part" of an IBS should meet the relevant requirements and the

associated technical testing standards. In the context of IBS "part"means an individual module, equipment or subsystem.

3. Each part to be integrated should provide details of its operationalstatus and the latency and validity of essential information. Meansshould be provided within the IBS to make use of this information.

4. A failure of one part should not affect the functionality of other partsexcept for those functions directly dependent upon the informationfrom the defective part.

5. The functionality of the IBS should ensure that its operation is at leastas effective as for stand-alone equipment.6. Continuously displayed information should be reduced to the minimum

necessary for safe operation of the ship. Supplementary informationshould be readily accessible.

7. The source of information (sensor, result of calculation or manualinput) should be displayed continuously or upon request.

8. Where multifunction displays and controls are used to performfunctions necessary for safe operation of the ship they should beduplicated and interchangeable.

9. It should be possible to display the complete system configuration, theavailable configuration and the configuration in use.

10.An alternative means of operation should be provided for essentialfunctions.

11.An alternative source of essential information should be provided. TheIBS should identify loss of either source.

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12.Interfacing to an IBS should comply with the relevant internationalmarine interface standards. A failure in the connectivity should notaffect independent functionality.

13.For actions which may cause unintended results, the IBS shouldrequest confirmation from the operator.

14.The number of alarm types and their release should be kept as low aspossible by providing indications for information of lower importance.Alarms should be displayed so that the alarm reason and the resultingfunctional restrictions can be easily understood. Indications should beself-explanatory.

15.The IBS should, upon turn-on, come to an initial default state, after itwas shut down as per the procedures.

16.After a power interruption full functionality of the IBS should beavailable after recovery 000 of all subsystems. The IBS should notincrease the recovery time of individual subsystem functions afterpower restoration.

17.If subjected to a power interruption the IBS should, upon restorationof power, maintain the configuration in use and continue automatedoperation, as far as practicable. Safety related automatic functionsshould only be restored upon confirmation by the operator.

18.The IBS should be supplied:i.from the main and emergency sources of electrical power with

automated changeover through a local distribution board withprovision to preclude inadvertent shut-down;

ii.from a transitional source of electrical power for a duration of notless than 1 min; and

iii.where required, parts of the IBS should also be supplied from areserve source of electrical power.