DNV GL SHIP TECHNOLOGY I-1-2 PDF

The Rules for Machinery Installations apply to the propulsion installations of ships classed by Germanischer Lloyd (GL), including all the auxiliary machinery and equipment necessary for the operation and safety of the ship. They also apply to machinery which GL is to confirm as being equivalent to classed machinery. 

Apart from the machinery and equipment detailed below, the Rules are also individually applicable to other machinery and equipment where this is necessary to the safety of the ship or its cargo. A.3 Designs which deviate from the Rules may be approved provided that such designs have been examined by GL for suitability and have been recognized as equivalent.

Machinery installations which have been developed on novel principles and/or which have not yet been sufficiently tested in shipboard service require GL's special approval. Such machinery may be marked by the Notation EXP affixed to the Character of Classification and be subjected to intensified survey, if sufficiently reliable proof cannot be provided of its suitability and equivalence in accordance with A.3.

In the instances mentioned in A.3 and A.4 GL is entitled to require additional documentation to be submitted and special trials to be carried out. 

In addition to the Rules, GL reserve the right to impose further requirements in respect of all types of machinery where this is unavoidable due to new findings or operational experience, or GL may permit deviations from the Rules where these are specially warranted. 

Passenger ships having a length of 120 m or more or having three or more main vertical fire zones shall also comply with MSC.216(82) and MSC.1/ Circ.1369. 1 

National regulations outside GL's Rules remain unaffected