Appendix 4 - List of Functions that Must be Accessible by Single or Simple Operator Action
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1609 - Guidelines for the Standardization of User Interface Design for Navigation Equipment – (14 June 2019) - Appendix 4 - List of Functions that Must be Accessible by Single or Simple Operator Action

Appendix 4 - List of Functions that Must be Accessible by Single or Simple Operator Action

 Introduction

1 Where the equipment provides the functions listed in the tables below, access should be as defined as in the tables. A requirement for information to be presented on single operator action may alternatively be met by a permanent indication.

  • .1 Single operator action is defined as "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."

  • .2 Simple operator action is defined as "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."

    (Both definitions taken from resolution MSC.252(83)).

2 Care will need to be taken when adding single and simple operator action buttons to displays. The manufacturer/operator should consider keeping the display area clear of clutter for the main function of the equipment as much as possible for user operability. It may be more useful to contain shortcut buttons under one setting menu rather than add many icons to the desktop.

Table 1: Access to existing functions already defined

(IEC 62388:2012, IEC 62288:2014, IEC 61174:2015)

Function Equipment Access
Select ECDIS standard display ECDIS Single operator action
Remove radar (image and tracked target), AIS and other target information overlaid over the ENC chart ECDIS Single operator action
Select route monitoring display covering own ship's position ECDIS Single operator action
Select default ECDIS settings ECDIS Single operator action followed by an action to confirm the selection
Select AIS target information Radar/ECDIS Simple operator action
Remove chart data Radar Simple operator action
Reset VRM origin to CCRP Radar/ECDIS Simple operator action
Reset EBL origin to CCRP Radar/ECDIS Simple operator action
Reset ERBL origin to CCRP Radar Simple operator action
Reset parallel index line to own ship's heading Radar Simple operator action
Remove user defined maps Radar Simple operator action
Select default radar settings Radar Single operator action followed by an action to confirm the selection
Select presentation mode (radar, chart and other navigation information) Radar/ECDIS Simple operator action
Remove AIS Area Notice Radar/ECDIS Single operator action
Remove additional information, including information for route planning, route monitoring, information overlays and supplementary navigation tasks Radar/ECDIS Simple operator action

3 The inclusion of non-mandatory functions in the table below does not make such functions "mandatory". Where the below functions are included within navigation equipment, manufacturers are requested to comply with the criteria listed in the table below.

Table 2: Access to additional functions

Function Equipment Access
Set panel illumination Radar/ECDIS Single operator action
Set display brilliance / toggle Day/Night mode Radar/ECDIS Single operator action
Select ECDIS mode INS/Radar/ECDIS Single operator action
Select radar mode INS/Radar/ECDIS Single operator action
Select Conning display mode INS Single operator action
Select CAM-HMI as defined in Bridge Alert Management (BAM) (for example as required by INS) INS Single operator action
Select North Up display Radar/ECDIS Single operator action
Select ship's Head Up display Radar/ECDIS Single operator action
Select ship's Course Up display Radar/ECDIS Single operator action
Select True Motion mode Radar Single operator action
Select Relative Motion mode Radar Single operator action
Select Ship centred mode Radar/ECDIS Single operator action
Select Ship off centred mode Radar/ECDIS Single operator action
Perform True Motion reset Radar/ECDIS Single operator action
Select range Radar/ECDIS Single operator action
Perform Range up Radar/ECDIS Single operator action
Perform Range down Radar/ECDIS Single operator action
Temporarily suppress the "heading line" Radar Single operator action
Toggle Range Rings on and off Radar/ECDIS Single operator action
Start Variable Range Marker adjustment Radar/ECDIS Single operator action
Start Electronic Bearing Line adjustment Radar/ECDIS Single operator action
Start Electronic Range and Bearing Line adjustment Radar/ECDIS Single operator action
Perform Target Acquire Radar Single operator action
Select tracked target Radar/ECDIS Single operator action
Call up the information associated with an object by cursor pick on its symbol ECDIS Single operator action
All AIS targets to Sleep Mode Radar/ECDIS Single operator action
Acknowledge an alert Radar/ECDIS Single operator action
Silence alerts Radar/ECDIS Single operator action
Group of functions Term Abbreviation
Record an event ECDIS Simple operator action
Set Trial Manoeuvre on Radar Simple operator action
Select True Vector Radar Simple operator action
Select Relative Vector Radar Simple operator action
Select True Trail Radar Simple operator action
Select Relative Trail Radar Simple operator action
Select CATZOC INS/ECDIS Simple operator action
View ECDIS software version ECDIS Simple operator action
View ENC information ECDIS Simple operator action
Parent topic: MSC.1/Circular.1609 - Guidelines for the Standardization of User Interface Design for Navigation Equipment – (14 June 2019)
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