Article 5 prevents a carrier from being designed around armament more powerful than Articles 9 and 10 of Washington or Article 4 of London permit. It also substitutes 6.1 inches or 155 millimetres for the earlier six-inch or 152-millimetre wording. The numerical change is small, but it determines which gun systems fall within the carrier limit. The conversion between imperial and metric measurements set a concrete design boundary.
Chapter · 16:54-17:30
Article 5 standardises carrier gun limits
Article 5 aligns carrier armament rules around a 6.1-inch or 155-millimetre limit, showing how measurement standards defined treaty categories.