4.4 Accommodation design
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Statutory Documents - IMO Publications and Documents - International Codes - HSC 2000 Code - International Code of Safety for High-Speed Craft, 2000 – Resolution MSC.97(73) - Chapter 4 - Accommodation and escape measures - 4.4 Accommodation design

4.4 Accommodation design

  4.4.1 The public spaces, control stations and crew accommodation of high-speed craft shall be located and designed to protect passengers and crew in the design collision condition. In this respect, these spaces shall not be located forward of a transverse plane (see figure 4.4.1) such that:

where:
A bow = the plan projected area of craft energy absorbing structure forward of the transverse plane (m2)
A = total plan projected area of craft (m2)
m = material factor =
M = appropriate hull material factor as given in 4.3.4
= Where materials are mixed, the material factor shall be taken as a weighted mean, weighted according to the mass of material in the area defined by A bow.
f = framing factor as follows:
- longitudinal deck and shell stiffening = 0.8
- mixed longitudinal and transverse = 0.9
- transverse deck and shell stiffening = 1.0
V = 90% of maximum speed (m/s).

Figure 4.4.1 Plan view of two different craft styles

  4.4.2 The public spaces and crew accommodation shall be designed based on the guidelines given in table 4.4.2 or by other methods which have been proven to give equal protective qualities.

Table 4.4.2 Overview General Design Guidelines footnote

Design level 1: g coll less than 3
1 Seat/seat belts
1.1 Low or high seatback
1.2 No restrictions on seating direction
1.3 Sofas allowed
1.4 No seat belts required
2 Tables in general allowed
3 Padding of projecting objects
4 Kiosks, bars, etc., no special restrictions
5 Baggage, no special requirements
6 Large masses, restrainment and positioning
Design level 2: g coll = 3 to 12
1 Seat/seat belts
1.1 Seatbacks with protective deformation and padding
1.2 Forward or backward seating direction
1.3 No sofas allowed as seat
1.4 Lap belt in seats when no protective structure forward unless satisfactorily tested without belts in that orientation and arrangement
2 Tables with protective features allowed. Dynamic testing
3 Padding of projecting objects
4 Kiosks, bars, etc., on aft side of bulkheads, or other specially approved arrangements
5 Baggage placed with protection forward
6 Large masses, restrainment and positioning

  4.4.3 Equipment and baggage in public spaces and in the operator's compartment shall be positioned and secured so that they remain in the stowed position when exposed to the collision design acceleration according to 4.3.4, 4.3.5 and table 4.3.3.

  4.4.4 Seats, life-saving appliances and items of substantial mass and their supporting structure shall not deform or dislodge under any loads up to those specified in 4.3.4, 4.3.5 and table 4.3.3 in any manner that would impede subsequent rapid evacuation of passengers.

  4.4.5 There shall be adequate handholds on both sides of any passage to enable passengers to steady themselves while moving about. The armrests and backrests of seats in public spaces may serve as handholds.

Parent topic: Chapter 4 - Accommodation and escape measures
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