# Directive 2009/45/EC of the European Parliament and of the Council of 6 May 2009 on safety rules and standards for passenger ships (Recast) (Text with EEA relevance), Division .5: Where the main steering gear comprises two or more identical power units, an auxiliary steering gear need not be fitted, provided that:

Extent: E+W+S+N.I.

.1 the main steering gear is capable of operating the rudder as required by paragraph .2.2.2 while any one of the power unit is out of operation;
.2 the main steering gear is so arranged that after a single failure in its piping system or in one of the power units the defect can be isolated so that the steering capability can be maintained or speedily regained.

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Source: https://www.legislation.gov.uk/eudr/2009/45/annex/I/chapter/2/part/C/division/6/division/3/division/.5 (the official version)
Page: https://openlegislation.uk/eu-directive-2009-45/annex-I/chapter-2/part-C/division-6/division-3/division-.5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.