PSC Challenging Ports
About the PSC Top 40 Most Challenging Ports
At RISK4SEA, we provide actionable PSC intelligence to shed light on Port State Control (PSC) performance and support the path toward safer and more sustainable shipping.
To deliver real-world insights, we are launching the Top 40 Most Challenging Ports rankings for four key segments: Bulk Carriers, Tankers, Container Ships, and General Cargo Vessels. This initiative aims to offer a clearer understanding of PSC performance at the port level.
To further accelerate industry learning, we are also releasing:
- The Top 20 Detainable Deficiency Codes for all ships.
- A comparison of common detainable deficiencies between each port and the global Top 20, helping identify port-specific challenges.
Our goal is to make PSC intelligence more accessible and update these rankings quarterly, analyzing data from the past 36 months.
By doing so, we aim to help the industry understand port-specific risks and dispel the myth that MoU regions or general regulations apply uniformly to all ports. Our research clearly shows that local PSC practices often override international rules, making port-specific intelligence crucial for compliance and risk management.
Apo Belokas
Founder & CEO
Methodology for the PSC Top 40 Most Challenging Ports
1. Objectives of a PSC Benchmarking Methodology on the PSC Top 40 Most Challenging Ports
One of the urban myths across the industry is that Ports within the same MoU have “similar” performance while, from our research what has become evident is the exactly opposite, especially when you have more than 1500 PSC Stations in the Paris MoU and more than 700 PSC Stations in the Tokyo Mou.
We have listed all the PSC Stations, with the relevant data, adding a limit of a minimum of 30 PSCIs within the last 36 months for the specific Ship Segment under review providing a simple methodology as outlined below.
With this methodology we define Challenging a port that is equally high in both DPI and DER also accounting for the most important factor, the Number of the Detainable Deficiency Areas, providing a score for benchmarking purposes.
2. Identify PSC Data used for Benchmarking
RISK4SEA is using a team of analysts and third-party vendors and experts to collect, evaluate and validate data used in the platform. As a raw input the model uses PSC Data (Inspections and Detentions along with the accompanying details of each inspection) that are assigned to Port, Country, Manager, Class, Flag at the time of the Inspection, for each PSC inspection.
Here the following PSC data parameters have been accounted for Specific Ship Segment for the port, within the last 36 months, with the exception of the following countries (exclusion list):
- Angola
- Bahrain
- Brunei
- Costa Rica
- French Polynesia
- Iraq
- Kuwait
- Nicaragua
- North Korea
- Pakistan
- Qatar
- Russian Ports Banned by Paris MoU
- Saudi Arabia
- Somalia
- Taiwan
- UAE
3. Set the Ship Types to be accounted
On each list ONLY relevant Ship Segments have been accounted for, providing 4x separate lists (Bulkers, Tankers, Containers and General Cargo), for the period under review.
4. Set the Time Intervals for Benchmarking
The following set of Data is considered for the PSC Top 40 Most Challenging Ports List :
- Last 36 Calendar Months at the date of issue, as identified at the beginning of the report
5. Set the parameters to be used for Reporting
A list of Information is being provided for each port, specifically, per Ship Segment (ONLY).
- Number of PSC Inspections
- Number of Deficiencies Recorded
- Number of Detentions
- The Number of Deficiency Areas required to reach 80% of the Total deficiency Findings in a Port Deficiency Profile
- The Number of Deficiency Areas required to reach 100% of the Total deficiency Findings in a Port Deficiency Profile
- Number of UNIQUE Detainable Deficiency Areas in a given Port, The higher the number the more challenging the port
- Number of COMMON Detainable Deficiency Areas between the port and the Global Top20 for All Ships, to identify commonalities
- The % of the Common Detainable Deficiency Areas vs the unique of the port, again to identify the challenge level
- Deficiency Per Inspection (DPI) (#DEF/#PSCIs)
- Detention Rate (DER), in % (#DET/100 PSCIs)
6. Set the parameters to be used for Benchmarking
The SCORE used is calculated as a deviation from the Benchmarks used between
- Deviation of the Actual Port DPI vs the Segment DPI used (at the bottom of the Sheet)
- Deviation of the Actual Port DER vs the Segment DER used (at the bottom of the Sheet)
- Deviation of the Actual Port Number of Detainable Deficiency Areas vs the Segment DPI used (at the bottom of the Sheet)
The SCORE reported for each port and segment is representing the average of the above deviations.
PSC Top 40
Most Challenging Ports
January 25 Edition
Most Challenging Ports per Fleet Segment & Size
Last 36 Months Worldwide Data

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