height of metacentre above keel

简明释义

稳心在龙骨上的高度

英英释义

例句

1.A higher height of metacentre above keel usually indicates better stability for the ship.

更高的水线以上的重心高度通常表示船只的稳定性更好。

2.During the design phase, we must consider the height of metacentre above keel when evaluating different hull shapes.

在设计阶段，我们必须在评估不同的船体形状时考虑水线以上的重心高度。

3.The height of metacentre above keel can change based on the load distribution on the vessel.

由于船只上的载荷分布，水线以上的重心高度可能会发生变化。

4.The stability of the ship is determined by the height of metacentre above keel, which affects how it responds to waves.

船的稳定性由水线以上的重心高度决定，这影响它对波浪的反应。

5.Naval architects calculate the height of metacentre above keel to ensure the vessel can handle rough seas.

海军建筑师计算水线以上的重心高度以确保船只能够应对恶劣海况。

作文

Understanding the stability of a ship is crucial for ensuring its safe navigation and operation in various water conditions. One of the key concepts in naval architecture that helps to determine a vessel's stability is the height of metacentre above keel. This term refers to the vertical distance between the keel, which is the bottom-most part of the ship's hull, and the metacentre, a point where the buoyant force acts when the ship is tilted. The height of metacentre above keel plays a significant role in assessing how well a ship can return to an upright position after being tilted by waves or wind forces. A higher metacentre indicates better stability, as it means that the center of buoyancy shifts less dramatically when the ship tilts, allowing it to recover more efficiently.When a ship is at rest in the water, the center of buoyancy is directly below the center of gravity. However, when the ship tilts, the center of buoyancy moves to one side, creating a righting moment that attempts to bring the ship back to its original position. The effectiveness of this righting moment is influenced by the height of metacentre above keel. If this height is sufficient, the ship will have a strong righting arm, which is the horizontal distance between the center of gravity and the center of buoyancy when the ship is tilted. A larger righting arm results in a greater force attempting to bring the ship back upright, enhancing its overall stability.In practical terms, the height of metacentre above keel can be calculated using specific formulas that take into account the dimensions and shape of the hull. Naval architects often use this measurement during the design phase of a vessel to ensure that it meets safety standards and performs well under various conditions. For example, a cargo ship designed to carry heavy loads may require a different height of metacentre above keel compared to a luxury yacht, which may prioritize speed and agility over maximum stability.Moreover, understanding the height of metacentre above keel is not only essential for shipbuilders but also for operators and crew members who need to be aware of their vessel's stability characteristics. During loading and unloading operations, for instance, the distribution of cargo can significantly affect the center of gravity, thereby impacting the effective height of the metacentre. Crew members must be trained to monitor these changes and make adjustments to maintain stability.In conclusion, the height of metacentre above keel is a fundamental concept in naval architecture that directly influences a ship's stability and safety. By comprehensively understanding this term, maritime professionals can better design, operate, and manage vessels to ensure they perform safely and effectively in all conditions. As technology advances and new materials are developed, the importance of this knowledge will only continue to grow in the maritime industry, highlighting the ongoing need for education and training in this critical area of study.

理解船舶的稳定性对于确保其在各种水域条件下的安全航行和操作至关重要。在海军建筑学中，有一个关键概念可以帮助确定船只的稳定性，即横心高度。这个术语指的是船体最底部的部分（龙骨）与一个点之间的垂直距离，这个点是当船倾斜时浮力作用的地方。横心高度在评估一艘船在波浪或风力影响下能否恢复到直立位置方面发挥着重要作用。较高的横心表示更好的稳定性，因为这意味着当船倾斜时，浮力中心的移动不那么剧烈，使得船能够更有效地恢复。当一艘船在水中静止时，浮力中心正好位于重心正下方。然而，当船倾斜时，浮力中心会向一侧移动，产生试图将船恢复到原始位置的复位力矩。这个复位力矩的有效性受到横心高度的影响。如果这个高度足够，船就会有一个强大的复位臂，即当船倾斜时，重心与浮力中心之间的水平距离。较大的复位臂会导致更大的力试图将船恢复到直立状态，从而增强整体稳定性。在实际操作中，横心高度可以通过具体公式进行计算，这些公式考虑了船体的尺寸和形状。海军建筑师通常在船只设计阶段使用这个测量值，以确保其符合安全标准，并在各种条件下表现良好。例如，设计用于运输重载的货船可能需要与一艘豪华游艇不同的横心高度，后者可能更注重速度和灵活性，而非最大稳定性。此外，理解横心高度不仅对造船商至关重要，对于需要了解船舶稳定性特征的操作员和船员来说也是如此。在装卸操作期间，例如，货物的分布会显著影响重心，从而影响有效的横心高度。船员必须接受培训，以监测这些变化并进行调整，以保持稳定性。总之，横心高度是海军建筑学中的一个基本概念，直接影响船舶的稳定性和安全性。通过全面理解这一术语，海事专业人员可以更好地设计、操作和管理船舶，以确保它们在所有条件下安全有效地运行。随着技术的发展和新材料的开发，这一知识的重要性在海事行业中只会继续增长，突显了在这一关键研究领域持续教育和培训的必要性。