How Vedam Design Helps Shipowners Seamlessly Implement IMO MSC.552(108)
The maritime industry is evolving rapidly, and regulatory compliance is becoming more critical than ever. One of the most significant recent regulatory developments is the adoption of IMO Resolution MSC.552(108), introducing amendments to the International Code for the Safe Carriage of Grain in Bulk.
These amendments directly address real-world grain loading practices and bring in new stability requirements that impact vessel operations, onboard loading software, and statutory documentation. For shipowners and managers, adapting quickly and efficiently is essential — and this is where Vedam Design delivers real value.
Understanding the Change: Old Code vs New Code
Old Grain Code – Recognised Loading Patterns
Until now, the Grain Code officially allowed only three loading patterns:
- Full hold – trimmed ends
- Full hold – untrimmed ends
- Partly filled hold
While these patterns worked in theory, practical terminal operations often involve loading scenarios that fall outside these defined cases.
New Code – Introduction of PUTE Loading Condition
The amendment introduces a new loading pattern:
PUTE – Partly filled hold in way of hatch opening, with untrimmed ends
This scenario is frequently encountered due to terminal constraints, cargo handling limitations, and operational time pressures. Previously, this condition lacked clear regulatory guidance, creating uncertainty in stability assessments and class approvals.
IMO MSC.552(108) eliminates this uncertainty by providing formal calculation methods, stability requirements, and approval pathways for PUTE loading conditions.
Which Vessels Must Comply?
The amendment applies to existing cargo ships designed for the carriage of grain that already have:
- An approved Grain Loading Manual
- A Grain Loading Declaration
Since this amendment focuses on untrimmed ends, it is applicable only to vessels with under-deck spaces forward and/or aft of the hatch, where voids can form.
Typical Vessel Types:
- Traditional bulk carriers with under-deck spaces (ends)
- Multi-purpose vessels (MPVs) with under-deck spaces (ends)
If a vessel’s current grain loading manual includes calculations for “full hold – untrimmed ends”, the new amendment is highly likely to apply.
Why This Amendment Is Business-Critical
The introduction of PUTE loading conditions significantly affects:
- Vessel stability margins and grain heeling moments
- KG values and longitudinal strength compliance
- Onboard Loadicator software functionality
- Statutory approvals and class documentation
Failure to update vessels in time can lead to inspection non-compliance, operational delays, commercial exposure, and increased safety risks.
Vedam Design: Your Partner for Seamless Compliance
Vedam Design offers a complete, class-approved engineering solution for implementing IMO MSC.552(108) efficiently and accurately.
Our Comprehensive Services Include:
- Development of detailed 3D grain hold and hatch models
- Calculation of additional grain shift moments and volume curves
- Updating Grain Loading KG values
- Integration of new curves into approved Loadicator software
- Generation of class-ready loading conditions
- Preparation and submission of Addendum Booklets for final class approval
A Structured Process That Delivers Results
Vedam follows a proven workflow ensuring technical accuracy and regulatory acceptance:
This structured methodology ensures full compliance with zero operational disruption.
Why Shipowners Choose Vedam Design
- Proven expertise in grain stability engineering
- Deep experience with loadicator software integration
- Strong working relationships with all major classification societies
- Multi-disciplinary engineering teams delivering global project execution
Be Ready for MSC.552(108) — Today
IMO MSC.552(108) is not just a regulatory update — it represents a fundamental shift in grain stability compliance. Early adoption ensures operational continuity, smooth port calls, and safe voyages.
Partner with Vedam Design to stay compliant, efficient, and ahead of the curve.
