DNV DNVGL-RU-NAVAL PART 4 CHAPTER 3 PDF

Scope of application 

These rules apply to the use of air independent power (AIP) systems permanently installed on submarines or remotely operated underwater vehicles (ROVs) according to Ch.1 and Ch.2. They describe the technical requirements for the safe operation of these systems. 

In the case of AIP systems which are used as the sole means of propulsion, for the emergency electrical supply or for the supply of essential consumers in accordance with the DNV GL Rules for Classification of Ships, the additional requirements will be determined within the scope of an individual examination. 

Designs which deviate from these rules or from the applicable rules may be approved if they are examined by the Society for suitability and then approved as being equivalent. 

For submarines or ROVs with AIP systems conforming to these rules and having a rated output greater than or equal to 10% of the rated output of the machinery installation the Class Notation AIP-xxx will be assigned. The wild-card symbol "xxx" designates the percentage share of the AIP system in relation to the rated output of the machinery installation. For AIP systems having a rated output lower than 10% of the rated output of the machinery installation the Class Notation with AIP will be assigned. See also Pt.3 Ch.1 Sec.11 [3].