ABSTRACT

Sailing in ice-infested waters has become more relevant for the Royal Netherlands Navy (RNLN). A method is developed to determine the technical safe speed for a single ice floe impact with a typical non-ice strengthened naval vessel. A representative ice floe impact load scenario is applied to three structural arrangements for the side shell structure: a reference design and two alternative Lean Duplex designs. Practical visual and structural acceptance criteria are defined. The proposed changes to the structural layout and the material will improve the ability to resist floe impacts at higher sailing speeds. The first exceedance of a visual criterion is improved from 1 m/s to 2 m/s. The more severe structural criterion is not exceeded at all, while this was the case for the reference design (at 2 m/s). Nevertheless, permanent deformations, are to be expected when these non-ice strengthened ships are operating in ice-infested waters.

摘要

在充满冰的水域中航行对于荷兰皇家海军（RNLN）变得越来越重要。开发了一种方法来确定典型的非冰强化海军舰艇单次浮冰撞击的技术安全速度。代表性的浮冰冲击载荷方案应用于侧壳结构的三种结构布置：参考设计和两种替代的精益双工设计。定义了实用的视觉和结构验收标准。对结构布局和材料的拟议更改将提高在较高航行速度下抵抗絮凝物冲击的能力。视觉标准的第一次超出从1 m / s提高到2 m / s。完全没有超过更严格的结构标准，而参考设计就是这种情况（2 m / s）。但是，永久变形