Notice on Soliciting Comments for the Group Standard Method for Determining Plume Blackness of Ship Exhaust Gas by Photographic Method
CIN [2025] No.6-043
To all relevant entities:
In accordance with the group standards development and revision plan of China Institute of Navigation (CIN), we organized and completed the draft for comments of the Method for Determining Plume Blackness of Ship Exhaust Gas by Photographic Method. In line with the requirements of the Group Standards Management Measures of CIN, and to ensure the scientific rigor, accuracy, and applicability of the standard, the draft for comments and the preparation notes for this group standard are hereby sent to your unit.
Please submit your comments and feedback via email to tuanbiao@cinnet.cn by January 28, 2026.
Failure to respond by the deadline will be considered as having no comments. We appreciate your support for the CIN's group standards work.
Contact Person: Jiao Lingxi, 13683612468
Attachments:
- Method for Determining Plume Blackness of Ship Exhaust Gas by Photographic Method (Draft for Comments)
- Method for Determining Plume Blackness of Ship Exhaust Gas by Photographic Method (Preparation Notes)
- Feedback Form for Solicitation of Comments
China Institute of Navigation
December 29, 2025
