Bridge Alert Management (BAM)
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Contents
Overview
The purpose of the bridge alert management (BAM) is to enhance the handling, distribution and presentation of alerts.
The BAM harmonizes the priority, classification, handling, distribution and presentation of alerts, to enable the bridge team to devote full attention to the safe operation of the ship and to immediately identify any alert situation requiring action to maintain the safe operation of the ship.
Further guidance on the presentation of alerts is provided in the Code on Alerts and Indicators, 2009 (resolution A.1021(26)) which is intended to provide general design guidance and to promote uniformity of type, location and priority for alerts and indicators.
CAM
MSC.302(87) specifies a central alert management (CAM) for the harmonized presentation and treatment of alerts on the bridge. A central alert management human machine interface (CAM-HMI) for presenting alerts as individual alerts or as aggregated alerts supports the bridge team in the immediate identification of any abnormal situation, of the source and reason for the abnormal situation and supports the bridge team in its decisions for the necessary actions to be taken.
Performance standard, testing standard & carriage requirement
Performance Standard
- Resolution MSC.302(87) adopted on 17 May 2010
Testing standard
- IEC 61924-2 Modular structure for INS - Module C describes alert management and was the de-facto testing standard for BAM in the absence of a dedicated testing standard
- IEC 62923-1 Part 1 of the BAM testing standard (operational and performance requirements)
- IEC 62923-2 Part 2 of the BAM testing standard (alert and cluster identifiers and other additional features)
Carriage requirements
- Central alert management (CAM) and central alert management human machine interface (CAM-HMI), if installed on the bridge on or after 1 July 2014, must conform to MSC.302(87)
- Goverments are recommended to encourage that the general requirements of modules A and C of MSC.302(87)are applied to relevant equipment on the bridge presenting alerts on or after 1 July 2014
Introduction into the Marine Equipment Directive
Testing standards IEC 62923-1 and -2 were introduced in Commission Implementing Regulation (EU) 2019/1397 of 6 August 2019, and were applied to the items listed below. The 'last placing on board' date for these line items when not complying with IEC 62923-1 and -2 was set as 29 August 2021.
- MED/4.1 Magnetic compass Class A for ships
- MED/4.2 Transmitting heading device THD (magnetic method)
- MED/4.3 Gyro compass
- MED/4.6 Echo-sounding equipment
- MED/4.7 Speed and distance measuring equipment (SDME)
- MED/4.9 Rate-of-turn indicator
- MED/4.14 GPS equipment
- MED/4.15 GLONASS equipment
- MED/4.20 Rudder angle indicator
- MED/4.21 Propeller revolution indicator
- MED/4.22 Pitch indicator
- MED/4.29 Voyage data recorder (VDR)
- MED/4.30 Electronic chart display and information system (ECDIS) with backup, and raster chart display system (RCDS)
- MED/4.31 Gyro compass for high-speed craft
- MED/4.33 Track control system
- MED/4.34 Radar equipment CAT 1
- MED/4.35 Radar equipment CAT 2
- MED/4.36 Radar equipment CAT 3
- MED/4.37 Radar equipment for high speed craft applications (CAT 1H and CAT 2H)
- MED/4.38a Radar equipment approved with a chart option, namely: CAT 1C
- MED/4.38b Radar equipment approved with a chart option, namely: CAT 2C
- MED/4.38c Radar equipment for high speed craft applications approved with a chart option, namely: CAT 1HC
- MED/4.38d Radar equipment for high speed craft applications approved with a chart option, namely: CAT 2HC
- MED/4.40 Heading control system for high speed craft
- MED/4.41 Transmitting heading device THD (GNSS method)
- MED/4.46 Transmitting heading device THD (Gyroscopic method)
- MED/4.47 Simplified voyage data recorder (S- VDR)
- MED/4.50 DGPS Equipment
- MED/4.51 DGLONASS Equipment
- MED/4.56 Galileo Equipment
- MED/4.57 Bridge Navigational Watch Alarm System (BNWAS)
- MED/4.58 Sound reception system
- MED/4.59 Integrated navigation system
Radio-communication equipment
- MED/5.1 VHF radio capable of transmitting and receiving DSC and radiotelephony
- MED/5.2 VHF DSC watch-keeping receiver
- MED/5.3 NAVTEX receiver
- MED/5.4 EGC receiver
- MED/5.5 HF marine safety information (MSI) equipment (HF NBDP receiver)
- MED/5.10 MF radio capable of transmitting and receiving DSC and radiotelephony
- MED/5.11 MF DSC watch-keeping receiver
- MED/5.13 Inmarsat-C SES
- MED/5.14 MF/HF radio capable of transmitting and receiving DSC, NBDP and radiotelephony
- MED/5.15 MF/HF DSC scanning watch keeping receiver
- MED/5.19 Inmarsat-F77
- MED/5.21 Integrated communication system (ICS)
Detailed requirements
MSC.302(87)
| Defintions | ||
|---|---|---|
| Aggregated alert | Alert indicating the existence of multiple individual alerts | |
| Aggregation | Combination of individual alerts to provide one alert (one alert represents plenty of individual alerts) | |
| Alarm | An alarm is a high-priority alert. Condition requiring immediate attention and action by the bridge team, to maintain the safe navigation of the ship | |
| Alert | Alerts are announcing abnormal situations and conditions requiring attention. Alerts are divided in four priorities: emergency alarms, alarms, warnings and cautions. An alert provides information about a defined state change in connection with information about how to announce this event in a defined way to the system and the operator | |
| Alert announcements | Visual and acoustical presentation of alerts | |
| Alert history list | Accessible list of past alerts | |
| Alert management | Concept for the harmonized regulation of the monitoring, handling, distribution and presentation of alerts on the bridge | |
| Bridge Alert Management (BAM) | Overall concept for management, handling and harmonized presentation of alerts on the bridge | |
| Central Alert Management (CAM) | Functionality for the management of the presentation of alerts on the CAM-HMI, the communication of alert states between CAMHMI and navigational systems and sensors. The functions may be centralized or partly centralized in subsystems and interconnected via a standardized alert-related communication | |
| Category A alerts | Alerts for which graphical information at the task station directly assigned to the function generating the alert is necessary, as decision support for the evaluation of the alert-related condition | |
| Category B alerts | Alerts where no additional information for decision support is necessary besides the information which can be presented at the CAM-HMI | |
| Category C alerts | Alerts that cannot be acknowledged on the bridge but for which information is required about the status and treatment of the alert | |
| Caution | Lowest priority of an alert. Awareness of a condition which does not warrant an alarm or warning condition, but still requires attention out of the ordinary consideration of the situation or of given information | |
| Central Alert Management HMI (CAM-HMI) | Human machine interface for presentation and handling of alerts on the bridge | |
| Cluster | Group of functions on a high level, e.g., navigation, automation | |
| Emergency alarm | Highest priority of an alert. Alarms whichindicate immediate danger to human life or to the ship and its machinery exits and require immediate action | |
| Failure analysis | The logical, systematic examination of an item, including its diagrams or formulas, to identify and analyse the probability, causes and consequences of potential and real failures | |
| Grouping | Arrangement of alerts in terms of their function or priority | |
| Human machine interface (HMI) | The part of a system an operator interacts with. The interface is the aggregate of means by which the users interact with a machine, device, and system (the system). The interface provides means for input,allowing the users to control the system and output, allowing the system to inform the users | |
| Individual alerts | Alerts announcing one abnormal situation and condition requiring attention | |
| Multifunction display | A single visual display unit that can present, either simultaneously or through a series of selectable pages, information from more than a single function | |
| Simple operator action | A procedure achieved by no more than two hard-key or soft-key actions, excluding any necessary cursor movements, or voice actuation using programmed codes | |
| Single operator action | A procedure achieved by no more than one hard-key or soft-key action, excluding any necessary cursor movements, or voice actuation using programmed codes | |
| Task station | Multifunction display with dedicated controls providing the possibility to display and operate any tasks. A task station is part of a workstation | |
| Warning | Condition requiring immediate attention, but no immediate action by the bridge team. Warnings are presented for precautionary reasons to make the bridge team aware of changed conditions which are not immediately hazardous, but may become so if no action is taken | |
