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Princess Cruises partners with Thermaflex for insulation excellence on Discovery Princess

Discovery Princess, a Royal class cruise ship from Princess Cruises in the Carnival Corporation family, entered dry dock in Singapore in November 2025 for scheduled maintenance and upgrades to chilled water and air conditioning systems. As part of this dry dock maintenance, Princess Cruises partnered with Thermaflex for a focused insulation training and project support.

First-time-right installation under dry-dock pressure

Thermaflex marine specialists spent six days on Discovery Princess at Singapore drydock, trained nine members of the riding team, certified two installers from Bluestone Group, provided practical guidance and project support to ensure consistent application quality across all teams.

Operating temperatures around −10 °C, demanding vapor-tight insulation to prevent condensation and CUI. Princess Cruises specified ThermaSmart® Marine 4.0 to meet long-term efficiency, reliability, and safety standards across the fleet. The teams worked on chilled water and AC systems operating at low temperatures in warm, humid ambient conditions, where vapour‑tight, mechanically robust insulation is essential for stable performance.

Over six days, Princess riding team members and key installation partners worked side by side with Thermaflex insulation experts Ton van Soest and German Torres, applying ThermaSmart® Marine 4.0 and completing training with very positive results.

Want to ensure first-time-right insulation on your next dry dock?

ThermaSmart® Marine 4.0 is a closed-cell polyolefin foam with aluminium-black foil, Lloyd’s Register type approval and MED certification. It is engineered for marine cooling, refrigeration and ventilation systems with lowest service temperature −80 °C. Its low thermal conductivity and high water-vapor diffusion resistance provide long-term condensation control and strong protection against CUI on cold steel lines. The halogen-free and PFAS-free material supports ship owner’s safety and sustainability ambitions while meeting IMO fire and smoke requirements.

The products used in this project were ThermaSmart® Marine 4.0 tubes (54 mm diameter, 19 mm wall thickness) and sheets (13, 19 and 25 mm). The material’s mechanical robustness enabled efficient work in tight under-floor and machinery spaces without compromising insulation thickness or vapor seal continuity.

Building internal capability for future projects

Thermaflex expresses sincere appreciation to Princess Cruises and Carnival Corporation for the trust placed in ThermaSmart® Marine 4.0. Special thanks go to Per Christiansen, the Princess riding team, Bluestone Group installers, and the Tecnavi team for their professionalism and focus on high-quality insulation work under challenging conditions. Their commitment continued after the training and certification, ensured project success.

We are looking forward to supporting future Princess Cruises projects with trainings and technical assistance.

The Discovery Princess project shows what can be achieved when a MED-certified insulation system is paired with structured training and on-site marine expertise. Visit our website to learn more about ThermaSmart® Marine 4.0 training and certification.

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