| 摘要 |
<p>Marine craft (10) has a crushable frontal impact protection structure (25), comprising transverse bulkhead (22) protecting passenger area (20); longitudinal crushable tubes (24); and transverse member (26). Webs (28) and (30) strengthen tubes (24), which may be made of extruded, heat treated aluminium; stainless steel; or plastic. Tubes (24') in figs. 5 to 7 are splayed, to improve protection against angled impacts C. The forward ends of tubes (24) are tapered (27, fig. 3) to initiate deformation. Tubes (24, 26) and (24') may be hexagonal, round, or oval in cross-section. Fig. 8 shows longitudinal bulkheads (34, 36), and (38), and transverse bulkhead (44) in place of tubes (24, 26). Fig. 9 shows longitudinal corrugated sheets (48); these may be mounted transversely. Fig. 10 shows bow area (14) filled with deformable cellular foam, to act as a buoyancy aid if hull (12) is breached. Side and rear impact protection is also disclosed.</p> |
