Section 3 Arrangement of Appendages

301. Functional requirements

1. Within operational conditions, propulsion, steering and dynamic lift are not to be impaired by craft's motions and accelerations. The arrangement should provide for maneuverability beyond operational restrictions.

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2. The arrangement is to be such that within the range of speed, any sudden manoeuvre will not lead to dangerous situations, including loss of control.

302. Protection and accessability

1. Water intakes to tunnels (e.g. for waterjet installations) are to be designed so as provide protection against clogging, protection which does not require that a grid is fixed on the waterjet duct inlet. Any outside protruding links, hydraulic equipment or other parts function from listed in 101. are to be protected from mechanical damage.

2. Cathodic protection is to be arranged to the extent considered necessary.

3. Hollow constructions like rudders, welded shaft brackets, etc. are to be hydraulically tested with an internal test pressure of 0.2 kgf cm Drainage are to be provided. Following the pressure test, in- ternal surfaces are to be covered by a corrosion resistant covering.

4. Items listed in Par 1. are to be accessible for inspection and immediate remedial action.

5. Housings for great systems, waterjet impellers, etc. are to be bolted to the hull to facilitate removal for servicing.