
Plain-English guides to the regulations shaping maritime compliance.
Every article below breaks a single regulation down into plain English — what it covers, who it applies to, and the dates that matter. Grouped by the Varuna Sentinels solution it supports, newest first. Written and maintained by the Varuna Sentinels BV compliance team.
Competency and shipboard-operations articles that underpin our STCW-aligned Computer Based Training courses.





The Inventory of Hazardous Materials through a vessel’s life — what must be listed, certified and kept current.


Compliant sourcing, supplier documentation and procurement data for marine buyers and suppliers.

Well-to-wake and whole-of-life carbon — the fuel, intensity and net-zero frameworks that drive lifecycle assessment.



Safe, environmentally sound ship recycling and the circular reuse of maritime materials.


Monitoring, reporting and verification regimes — the data your fleet must collect, rate and disclose.



