RULES FOR CLASSIFICATION
         Inland navigation vessels
                                                        Edition December 2015
         Part 4 Systems and components
         Chapter 1 Machinery and systems
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                                        DNV GL AS
           FOREWORD
           DNV GL rules for classification contain procedural and technical requirements related to obtaining
           and retaining a class certificate. The rules represent all requirements adopted by the Society as
           basis for classification.
           ©
             DNV GL AS December 2015
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              Rules for classification: Inland navigation vessels — DNVGL-RU-INV-Pt4Ch1. Edition December 2015                Page 3
              Machinery and systems 
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               CONTENTS
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                   Section 1 General requirements.................................................................................5
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                                  1 General................................................................................................... 5
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                                  2 Design and construction.........................................................................5
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                                  3 Arrangement and installation on board.................................................. 8                      p
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                                  4 Tests and trials.......................................................................................9
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                   Section 2 Propelling and auxiliary machinery...........................................................10
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                                  1 Symbols................................................................................................ 10     t
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                                  2 Internal combustion engines................................................................10                  a
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                                  3 Main shafting........................................................................................22
                                  4 Gears and couplings............................................................................. 30
                                  5 Propellers............................................................................................. 34
                                  6 Torsional vibrations..............................................................................42
                                  7 Windlasses............................................................................................44
                                  8 Hydraulic system.................................................................................. 47
                   Section 3 Lateral thrust units...................................................................................50
                                  1 General................................................................................................. 50
                                  2 Materials...............................................................................................50
                                  3 Thruster tunnel.....................................................................................50
                                  4 Machinery and systems........................................................................ 50
                                  5 Electrical installations...........................................................................51
                                  6 Test in the manufacturer’s works.........................................................51
                   Section 4 Domestic gas installations........................................................................53
                                  1 General................................................................................................. 53
                                  2 Gas installations................................................................................... 53
                                  3 Ventilation system................................................................................56
                                  4 Tests and trials.....................................................................................56
                   Section 5 Tests on board......................................................................................... 58
                                  1 General................................................................................................. 58
                                  2 General requirements for shipboard tests............................................ 58
                                  3 Shipboard tests for machinery..............................................................59
                                  4 Inspection of machinery after river trials.............................................63
               Rules for classification: Inland navigation vessels — DNVGL-RU-INV-Pt4Ch1. Edition December 2015                      Page 4
               Machinery and systems 
                                                                      DNV GL AS