Why ammonia is a difficult fuel for ships

Is ammonia a sensible fuel for ships or other vehicles?

The case remains unconvincing: any claimed performance gain would have to justify the confined-space and chemical-handling risks.

A substantial performance gain would be needed to justify ammonia as ship fuel in this assessment. Confined spaces and incompatibility with cleaning chemicals are the main objections raised. The initial rejection allows that a proposal can follow a logical argument while remaining unattractive in practice. One participant calls the product of mixing ammonia and bleach mustard gas, but another immediately challenges that identification.