ECDIS setup and operation
What is being checked
The inspector is checking whether the ECDIS is configured to distinguish safe from unsafe water, supports route checking and monitoring, and remains cross-checked against independent information, with officers able to configure, cross-check, test and respond to failure of the actual equipment fitted.
Ready onboard
0/6 completePractice questions
Answer aloud, then open the preparation point.
1What safety function does ecdis setup and operation provide?
The ecdis is configured to distinguish safe from unsafe water, supports route checking and monitoring, and remains cross-checked against independent information.
2How is the complete function tested?
Officers complete approved performance and alarm checks, verify sensor inputs, route-check function, backup availability and any test records required by the maker or SMS.
3What is its principal limitation?
ECDIS does not remove chart-data uncertainty, sensor error, overscale risk or the need for visual and independent position verification.
4What is your response if it fails?
Identify the failed sensor or unit, shift to the approved backup, increase independent position checks, mark the limitation and notify the Master under the bridge procedure.
5Show the latest test and operational evidence.
Link the dated record to the actual unit, test method, result, defect response and restoration; a panel lamp test alone is not sufficient where the full signal path can be tested.
Where an observation may arise
The responsible officer cannot explain safe use, limitations or failure response.
Testing does not prove the required operational function or remote indication.
Safety contour or depth is copied forward without recalculation for draft, squat, UKC and tide.
Automated checking is accepted without appropriate scale and visual inspection.
A GNSS or heading error is followed without independent cross-check.
Past observations for practice
The operator's procedure for thr calculation of the safety depth and safety contour was required to deduct the height of tide. However, there was no clarifications that predicted height of tide to be deducted in accordance with guidelines in the NP232.
OP was not aware of the requirements to deduct the predicted height of the tide during calcilation of safety contour and safety depth.
Master's practical note
Ask each officer to set the safety contour and explain the next deeper available contour. Familiarity is demonstrated by the fitted menus and limitations, not by possession of a generic certificate.
Equipment boundary and references
Equipment boundary: Settings must follow the vessel UKC policy and available ENC contours. SCAMIN, CATZOC, compilation scale and manual safety features require deliberate use; they are not automatic safety margins.
References
- OCIMF SIRE 2.0 Question Library Part 1, Version 1.0, Question 4.1.1
- SOLAS Chapter V regulations 19 and 27
- IMO MSC.1/Circ.1503/Rev.2
- IEC 61174
- OCIMF Recommendations on Usage of ECDIS and Preventing Incidents
Last reviewed: 2026-09-11
