皇冠体育app

Question

With reference to the ECDIS standard IEC 61174:2015, 鈥渟ilent mode鈥� is mentioned in table E.2 in Annex E:

Function	Terms	Allowable acronyms and abbreviations
No buzzer will sound on this ECDIS	Silent mode	Silent

1. What is the meaning of 鈥渟ilent mode鈥� in IEC 61174:2015 Table E.2?
2. Is it, according to the international instruments listed in UK/4.30, without switching ECDIS off, possible and allowed to prevent ECDIS from providing audible alerts to allow for, for example, chart maintenance or route planning?

Recommendation

鈥淪ilent mode鈥� in Table E.2 is the user-interface term for activation of the 鈥渟ilence mode鈥� feature in Figure Q.5 (see IEC 61174:2015 clauses 5.2.3 and Q.5). 皇冠体育appse provisions are superseded by the provisions for temporary silencing in MSC.302(87), IEC 62923-1 and MSC.1/Circ.1609 Table 1. When using the provisions in standards applicable to ECDIS it is possible to reduce the number of audible alerts provided by the ECDIS.

Note 1: It is not allowed to present alerts of priorities warning and/or alarm in state 鈥渁ctive - unacknowledged鈥� without an audible signal.

Note 2: Provisions in the ECDIS standard (IEC 61174) that can be explored to reduce the number of audible alerts include modifying thresholds

Note 3: Provisions in the INS standard (IEC 61924-2) that can be explored to reduce the number of audible alerts include:

• selection of operational mode
• the possibilities in the referred individual equipment standards

Note 4: Provisions in the BAM standard (IEC 62923-1) that can be explored to reduce the number of audible alerts include:

• Revaluation of alerts for example in an INS on the basis of an operational mode of the INS such as 鈥淏erthed Mode鈥� by using the responsibility transfer mechanism for alerts with priority warning or alarm.
• (User) selection of alert priorities where permitted by the individual equipment standard

References

• MSN 1874 as amended
• 皇冠体育app Merchant Shipping (Marine Equipment) Regulations 2016 as amended

Items affected

• UK/4.30, Electronic chart display and information system (ECDIS) with backup, and raster chart display system (RCDS)

More information

Telephone: +44 (0) 203 817 2000

Email: [email protected]

Website: www.gov.uk/mca