Loss Control Services

STS Transfer Operations — Service Scope & Technical Capabilities

Please find below an overview of our service scope and technical capabilities.

Pre-transfer risk assessment and review of STS transfer plans, including operation-specific risk matrices tailored to vessel pairing, cargo type, and location
Verification of compliance with IMO, OCIMF, ISGOTT, and applicable local/flag-state regulatory requirements
Suitability assessment of participating vessels, fender systems, hoses, and transfer equipment, including compatibility checks against vessel freeboard, displacement, and manifold arrangements
Review of weather, sea-state, current, and navigational conditions both prior to and throughout the operation, with go/no-go decision support against pre-agreed operational limits
Attendance by qualified marine surveyors or STS superintendents to monitor critical stages — approach, mooring, hose connection, cargo transfer, unmooring, and departure
Verification of cargo quantities before and after transfer, including ullage/sounding measurement, temperature and density corrections, and reconciliation procedures
Monitoring of pollution prevention measures and spill-response preparedness, including boom deployment readiness and SOPEP/SMPEP compliance checks
Incident investigation, root-cause analysis, and recommendations for corrective action following any loss event, with formal reporting to support claims handling

Technical Capabilities

Experienced STS transfer masters and marine specialists with hands-on tanker operations expertise across crude, product, and gas carriers
Advanced mooring analysis and vessel compatibility assessments, accounting for fender reaction forces, hull contact pressures, and mooring line loads
Real-time monitoring of vessel position, movement, weather, and transfer parameters, supported by dedicated monitoring equipment where required
Inspection and certification of hoses, fenders, and ancillary transfer equipment against manufacturer and OCIMF guidelines, including pressure testing records review
Cargo transfer monitoring, including pressure, flow rate, and emergency shutdown (ESD) procedures, to ensure operations remain within safe operating envelopes
Use of marine risk modeling and operational checklists to identify and mitigate hazards before they develop into loss events
Detailed operational reporting, documentation, and post-transfer performance reviews, providing an auditable record for owners, charterers, and insurers
Capability to support transfers involving crude oil, petroleum products, LNG/LPG (where applicable), and other bulk liquid cargoes, with specialist attendance matched to cargo-specific hazards

Verification of additive injection systems (in-line and batch dosing) for correct calibration, dosing rates, and traceability prior to commencement of transfer
Review of additive compatibility with base cargo grade to confirm no adverse chemical interaction, phase separation, or specification deviation
Witnessing of additive injection during transfer, including cross-checks of dosing pump flow rates against agreed treat-rate ratios
Sampling and retention of additive batches (with certificates of quality/analysis) alongside base product samples for traceability and post-transfer verification
Oversight of on-board or in-line blending operations, including monitoring of blend ratios, homogeneity, and sequencing to achieve target product specification
Verification of blending equipment calibration (flow meters, blend ratio controllers) and cross-referencing against static/dynamic mass balance calculations
Post-blend quality control checks, including density, viscosity, flash point, and other relevant parameters against contractual/certificate specifications
Documentation of additivation and blending records — dosing logs, blend certificates, and QC results — to support cargo quality claims and regulatory compliance
Investigation support in cases of off-specification product, including root-cause analysis of dosing, blending, or contamination issues

STS ASSESSMENT · ADVISORY · MONITORING

We would be pleased to discuss how these services can be tailored to your specific operational requirements.