Section 4 Superstructures and deck-houses

4.1.1 Design loads for superstructures and deck-houses are given in Pt 5, Ch 4, 3 Hull envelope design criteria of the SSC Rules. Loads are to be determined assuming that the ACV is off-cushion and floating whilst underway at the maximum towing speed.

4.1.2 Design loads for machinery casings may be taken as for superstructure and deck-houses in the same position.

4.1.3 As an alternative to Ch 3, 4.1 Design loads 4.1.1 and Ch 3, 4.1 Design loads 4.1.2, the designer may submit design loads for consideration. These loads may include but are not limited to the following:

1. Concentrated loads due to equipment;

2. Personnel loads;

3. Snow and ice loads;

4. Wind loads;

5. Marine environmental loads.

4.2.1 All openings are to be substantially framed and have well-rounded corners. Arrangements are to be made to minimise the effects of discontinuities.

4.2.2 Special attention is to be given to the connection of the superstructure and deck-house to the deck in order to provide an adequate load distribution and avoid stress concentrations.

4.2.3 Where pillars are fitted to support the span of stiffening members, they are to comply with the requirements of Pt 7, Ch 3, 10 Pillars and pillar bulkheads of the SSC Rules.

4.3.1 Seats and their attachments to the deck are to be certified in accordance with the HSC 2000 Code - International Code of Safety for High-Speed Craft, 2000 – Resolution MSC.97(73) Annex 10 - Criteria for testing and evaluation of seats. Other industry equivalent standards may be accepted in agreement with LR.