PSC Top 18 items – the main detainable deficiencies you need to know about

DNV GL has identified the main detainable PSC deficiencies from PSC detentions worldwide of ships with DNV GL services, and the result is a “Top 18” list. This news covers these top PSC items as well as the updated version of DNV GL’s PSC Planner.

Technical and Regulatory News 07/20 | DNV GL - Maritime

Relevant for ship owners and managers.

PSC Top 18 items by DNV GL

The key to successfully reducing the number of deficiencies during a PSC inspection, and to avoiding a detention, is regular maintenance on board and a more detailed focus on PSC Top 18 items. The 18 most frequent detainable deficiencies were found in the following technical categories as defined by the PSC regimes:

  • 03(...) - Water/weathertight condition
  • 04(...) - Emergency systems
  • 07(...) - Fire safety
  • 10(...) - Safety of navigation
  • 11(...) - Life saving appliances
  • 13(...) - Propulsion main engine
  • 14(...) - Environmental protection
During regular maintenance, the crew needs to focus on verifying operational preparedness and compliance with international requirements. Even more important is the assessment of the management system, since detainable deficiencies to the PSC regimes’ category “15(...) – ISM related deficiency” are at the top of the detainable deficiencies list. Therefore, the assessment needs to verify if the ships management system is still suitable to the actual condition of the crew and ship or if adjustments or improvements are needed. This assessment and possible resulting changes will ensure that a single failure is detected and rectified in a systematic way and that a reoccurrence is avoided. DNV GL has prepared a presentation summarizing these items, available on our PSC website or you can download the presentation here.

The PSC Planner now also includes the Top 18 items

The checklist of DNV GL’s PSC Planner now also includes the Top 18 detainable deficiencies, next to its remaining ship and port-specific features.

Additionally, the PSC Planner is now included under Fleet Status, available via DNV GL’s Veracity platform (available for DNV GL customers only). In Fleet Status you will find a newly introduced tab, “Port State Control”, where your fleet’s PSC performance is available.

Based on actual AIS data, the ship risk factor and the PSC inspection window of the corresponding Memorandum of Understanding (MoU) will be shown at a single glance. For more details, see the presentation on the new PSC Planner.

The picture below illustrates a view from the PSC Planner in My Fleet Status, where the MoU inspection window is defined for each vessel. For more details, see the presentation on the new PSC Planner.

PSC Planner TR News_720x380

You can also apply filters and home in on your fleet’s PSC performance. Both ship and fleet overviews can be provided. This brings great value in terms of continuous improvement; it provides you with a clear guidance of where you should focus your efforts, and it increases awareness of operational performance and safety.


Owners and operators should use the information provided by the PSC Planner for training relevant staff onshore and on board. Furthermore, you can create customized checklists via the tool to cover the relevant items, which enables the crew to prepare the ship for the next PSC inspection.



  • For customers: DATE – Direct Access to Technical Experts via My Services on Veracity
  • Otherwise: Use our office locator to find the nearest DNV GL office.
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IMO Maritime Safety Committee (MSC 106)

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  • Maritime
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IMO sub-committee on navigation, communications, search and rescue

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  • Maritime
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