13.1.1 Design for local strength of walkways, decks loaded by wheeled vehicles,
helicopter landing areas, guard rails, bulwarks and other means for the protection
of crew and other personnel is to comply with the requirements of Pt 4, Ch 6 Local Strength.
13.1.6 Requirements additional to these Rules may be imposed by the National
Administration in the area of operation and/or the country of administration, as
applicable.