| 摘要 |
<p>A gangway (1) for a boat (S), comprising a proximal gangway element (2) and a distal gangway element (3), in which each of these gangway elements comprises a supporting element (4, 5), formed by a box-type section, and a panel (6, 7) placed above it to form a passage surface (P) for the transit of persons. The supporting element and the corresponding panel are assembled in such a way that the supporting element is positioned in the central plane (M) of the panel. The supporting element (7) of the distal gangway element (3) can slide inside the supporting element (6) of the proximal gangway element (4), so as to form a telescopically elongatable configuration. Each supporting element has a polygonal cross section with at least six sides, comprising: a rectilinear upper side (51) which faces the corresponding panel (6, 7), a pair of rectilinear lateral sides (52, 53) of equal length, which extend from respective ends (54, 55) of the upper side (51) to respective lateral vertices (56, 57) of the polygonal cross section, each forming an obtuse angle with the upper side (51), and a pair of further vertices (60, 61) of the polygonal cross section, positioned on opposite parts with respect to the central plane (M) in such a way that they can be linked by a rectilinear segment (S1; 62) parallel to the upper side (51) and spaced apart from the upper side by a specified distance (d1), and in such a way that each further vertex (60, 61) can be linked to the lateral vertex (56, 57) on the same part with respect to the central plane (M) by means of a rectilinear segment (S2, S3; 58, 59) which is parallel to the lateral side (53, 52) on the other part with respect to the central plane (M), and which is spaced apart from this lateral side (53, 52) by a distance (d2, d3) equal to the specified distance (d1).</p> |
