Internship - Thermal Analysis Engineer, Subsea Power Cables (F/M)

Topic: Thermal calculations and ampacity of subsea power cables

Join a global leader in maritime classification and certification.

Your career is about more than building a CV – it's a chance to LeaveYourMark.

Joining Bureau Veritas Marine & Offshore means becoming part of a world-leading organization in maritime classification and certification.

For nearly two centuries, we have been supporting innovation and transformation across the maritime sector, ensuring the safety, performance, and sustainability of ships and offshore infrastructures worldwide.

Our mission? To contribute to a safer and more sustainable maritime world, by providing our technical expertise and commitment to our clients and partners.

Power the Future of Offshore Wind

Would you like to support the growth of offshore wind, at the crossroads of heat transfer, electrical engineering, and numerical simulation?

Join our team specialized in offshore energy (risers, pipelines, umbilicals, and subsea power cables), based in Saint-Herblain (Nantes area, France).

Context: subsea power cables used in offshore wind farms are designed to withstand hydrostatic pressure, the marine environment, and offshore installation and operating loads. This complex design calls for dedicated calculation tools. Your goal? Develop tools for thermal analysis and current-carrying capacity (ampacity) of these cables.

Your main missions

Supported by your internship supervisor, you will:

• Get familiar with subsea cables and their architecture;
• Carry out a literature review of thermal calculation methods for power cables (IEC and CIGRE standards);
• Develop and validate analytical models for steady-state thermal and ampacity calculations;
• Build a finite element thermal model (Abaqus) and study transient behavior (load cycles, environmental variations);
• Compare analytical and numerical approaches and define their range of validity;
• Apply these models to real project cases and compare results with suppliers' data;
• Make recommendations for future engineering studies.

Depending on progress, you may also study the structural strength of these cables through mechanical calculations.

Your strengths to succeed

• Engineering student in your 4th or 5th year, or Master's student, specializing in electrical engineering, energy, mechanical engineering, or scientific computing;
• Interest in heat transfer and numerical simulation;
• Rigor, curiosity, and autonomy;
• Good command of English, both written and spoken, in an international working environment.

Preferred qualifications

• Knowledge of Python
• Hands-on experience with a simulation tool: Ansys, Abaqus, or COMSOL

Allowance and benefits

• Location: Saint-Herblain (Nantes area)
• Allowance: €1,300 to €1,600 gross / month, depending on level of studies
• 50% reimbursement of your public transport pass
• Works Council (CSE): subsidy for leisure and cultural activities

Why join Bureau Veritas Marine & Offshore?

By joining Bureau Veritas Marine & Offshore, you will be part of:

• An international, ambitious, and open-minded team, driven by a passion for the maritime world;
• A work environment built on trust, collaboration, and talent development;
• A company that values curiosity, initiative, and innovation.

Bureau Veritas is committed to equal opportunity and diversity. We promote gender equality and support the professional integration, access, and retention of people with disabilities.

Ready to embark on your next professional adventure? Join us in shaping a better maritime world!