For the purpose of defining the ships in accordance with regulations 1.28.2, 1.28.4, 1.28.6, 1.28.7, 1.28.8 and 1.28.9, a ship which falls into
any one of the categories listed in subparagraphs 1, 2, 3, 4.1. 4.2,
or 4.3 of these paragraphs should be considered as a ship falling
under the corresponding definition.