{
  "id": 1799390,
  "title": "ClassNK releases revised edition of ‘Guidelines for Ships Using Alternative Fuels’",
  "url": "https://urgent.news/2026/08/18/classnk-releases-revised-edition-of-guidelines-for-ships-using",
  "topic": "business",
  "section": "Business",
  "published": "2026-08-18T21:00:39.000Z",
  "source": {
    "name": "Hellenic Shipping News",
    "slug": "hellenic-shipping-news",
    "url": "https://www.hellenicshippingnews.com/classnk-releases-revised-edition-of-guidelines-for-ships-using-alternative-fuels/"
  },
  "original_language": "en",
  "account": "ClassNK has updated its 'Guidelines for Ships Using Alternative Fuels' to include safety requirements for ships powered by methanol/ethanol and hydrogen. The revised edition 3.1 now reflects the IMO's Interim Guidelines for the Safety of Ships Using Hydrogen (MSC.1/Circ.1701). Part D of the guidelines incorporates the IMO's guidelines, along with a new hydrogen leak frequency table to aid in safety assessments. Meanwhile, Part A introduces new structural strength requirements for methanol/ethanol fuel tanks, not covered in the IMO guidelines. This revision aims to streamline design and safety assessments for alternative-fueled ships in line with international standards. With the rise in building alternative-fueled ships to combat GHG emissions, ClassNK has compiled a comprehensive set of safety requirements for fuels like methanol, ethanol, LPG, ammonia, and hydrogen. The guidelines also set requirements to mitigate environmental, safety, and operational risks associated with alternative fuels.",
  "summary": "ClassNK has revised the safety requirements for ships using methanol/ethanol and hydrogen as fuel within the ‘Guidelines for Ships Using Alternative Fuels (Edition 3.1).’ In Part D, covering hydrogen-fueled ships, the revision incorporates the ‘Interim Guidelines for the Safety of Ships Using Hydrogen as Fuel (MSC.1/Circ.1701)’ issued by the IMO this year, and additionally introduces ...",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}