Panteleimon Skrivalos

Senior Maritime Assurance Leader with extensive global experience across tanker operations, ship management, and high‑stakes vetting for major energy trading. Proven record delivering large‑scale risk governance and measurable safety and performance gains. Expert in digitalising assurance processes, leading global teams, and enabling safe, commercially agile marine operations. 

Manager, Maritime Assurance Global Time Charter, Previously Maritime Assurance Assessor

Shell International Trading and Shipping Company (STASCO) 

London, United Kingdom  

July 2013 – Dec 2025  

• Led Shell’s global Long‑Term Time Charter assurance portfolio during a period of expanding commercial activity, strengthening operational reliability and ensuring safe, compliant vessel selection across global trades. Managed a fleet of 250+ tankers operated by 50+ ship managers and led a distributed team of 16 Maritime Assurance Assessors across London, Rotterdam, Dubai, Houston, and Singapore, delivering consistent berth‑to‑berth safety and compliance while enabling commercial agility across crude, products, chemicals, and LNG trading. 

• Oversaw Shell’s high‑volume global vetting operations to support fast‑moving trading desks, delivering timely, risk‑based decisions at scale. Processed more than 40,000 business clearances, completed 35,000 SIRE/CDI risk ratings, reviewed 2,000+ PSC inspections, and followed up on 800+ maritime incidents, while conducting over 150 TMSA Audits and 40 SIRE inspections. These efforts drove major improvements in ship management systems and contributed to a ninefold reduction in high‑impact incidents. 

• Enhanced Shell’s inspection quality and industry alignment by serving as the CAT A OCIMF SIRE Inspector and OCIMF Shell SIRE Inspectors Focal Point, overseeing inspector performance and contributing to key OCIMF publications. Strengthened Shell’s emergency response capability through a three‑year assignment as STASCO Casualty Duty Response Coordinator, effectively managing significant maritime incidents and earning Special Recognition Awards. 

• Advanced digitalisation and global capability building by delivering training on GMAS reporting, enhanced surveillance, Power BI analytics, and Time Charter Operator engagement. Accelerated assessor onboarding and performance through structured coaching, and delivered Assurance Awareness and Cargo Planning training to Shell Commercial Operators, improving global consistency and reducing time‑to‑competence. 

• Supported Shell’s safety culture by co‑leading Reflective Learning initiatives across more than 70 shipping companies, facilitating Partners in Safety sessions, and conducting compliance ship visits. These efforts contributed to a sustained reduction in serious incident frequency and the onboarding of six new Maritime Partners to Shell’s Safety Initiative. 

• Delivered major strategic projects including the integration of OCIMF SIRE 2.0 into Shell’s vetting processes and the development of Minimum Assurance Vetting Criteria for LNG Bunker Vessels and Dual Fuel carriers. These initiatives enabled the safe expansion of Shell’s LNG Dual Fuel business and supported broader emissions‑reduction goals. 

• Provided assurance leadership for the world’s first LNG Dual Fuel crude carrier, the Gagarin Prospect, as well as multiple LBVs and the PROTEUS and NEPTUNE long‑term charter projects. Designed the Hybrid Management Review Process, generating annual savings of $300,000 and 420 man‑hours, and integrated the LTTC Assurance Framework into Shell’s global system, delivering a further 1,500 man‑hours in annual efficiencies. 

• Streamlined multiple assurance processes—including Period Charter Out vetting, Bitumen ship clearance, vessel approval cycles, SIRE inspection planning, and technical review workflows—unlocking more than $80 million in commercial value and saving thousands of work‑hours across Maritime Assurance, Freight, and Trading teams.

Safety & Quality Manager (Short Term Assignment)

Ionia Management SA

Athens, Greece 

Aug 2012 – Jan 2013

• Led fleet‑wide safety and quality operations, managing Marine Superintendents and a Coordinator while revising the Safety Management System to meet oil major, TMSA, and ISM/ISO standards. Delivered full compliance, improved operational performance, and transitioned the SMS from paper‑based to a fully electronic platform, enhancing accessibility, control, and usability across the fleet. 

• Strengthened fleet management and operational reliability by developing digital tools for work/rest hour monitoring, upgrading audit and attendance processes, enhancing the Risk Assessment Library, and introducing KPIs and structured reporting. Implemented a controlled ECDIS Management of Change process with clear timelines and training, reducing incident frequency and severity, increasing fleet reliability, and cutting proposed business rejections by 30% 

Quality Manager & Designated Person Ashore

Tsakos Columbia Ship management (“TCM”) S.A

Athens, Greece 

Oct 2009 – May 2012

• Led the HSSQE team through the Tsakos–Columbia joint‑venture transition, managing Marine Superintendents and a Coordinator to maintain safety and operational continuity. Directed the full Management of Change process—defining scope, aligning stakeholders, setting KPIs, allocating resources, and delivering targeted training—ensuring an on‑time, on‑budget transition aligned with strategic and industry requirements. Unified the Safety Management System by integrating the strongest elements of both companies, delivering workshops and enhancements that achieved full compliance with oil majors, TMSA, and ISM/ISO standards, and securing eligibility for all business levels including Long‑Term Time Charter engagements. 

• Strengthened operational performance and incident management across the fleet by developing software tools for planning and monitoring audits, inspections, and drills, increasing fleet reliability by 15%. Enhanced Terms of Reference, optimised Quality Assurance tools, and conducted extensive internal audits and global pre‑vetting inspections. Introduced departmental KPIs, benchmarking, and structured reporting, enabling trend‑driven corrective actions that reduced proposed business rejections by 75%. Implemented advanced technologies, regular training, and robust root‑cause analysis processes, supported by updated incident response plans and improved communication systems, ensuring all managed fleet incidents remained low in actual and potential severity. 

Captain Class A (Master)

Tsakos Shipping and Trading S.A. & Aiolos Management S.A

Athens, Greece

Aug 1995 – Sep 2009

• With a long‑standing career in the maritime industry, including 14 years at sea advancing to Captain Class A (Master) on crude and product tankers from Handymax to ULCCs, I developed a solid grounding in ship operations and safety leadership. My professionalism and performance were acknowledged with the Captain Class A Special Performance Recognition Award from the Greek Captains’ Union.

• Maritime Operations Management, JMU University
• Shell Leadership Program
• Master Mariner (Class A)
• Former OCIMF SIRE Category 1 Inspector (Oil and Gas)
• Lead Auditor: TMSA, ISM, ISO 9001, ISO 14001

Full list of training courses available upon request.