nautical almanac

简明释义

航海历

英英释义

例句

1.Before embarking on a voyage, it's crucial to check the nautical almanac for any updates.

在启航之前，检查航海年鉴以获取任何更新是至关重要的。

2.Sailors often refer to the nautical almanac to determine their position at sea.

水手们常常参考航海年鉴来确定他们在海上的位置。

3.The nautical almanac provides essential data for celestial navigation.

航海年鉴提供了天文导航所需的重要数据。

4.The nautical almanac includes information about tides and currents.

航海年鉴包含有关潮汐和洋流的信息。

5.Using the nautical almanac, we calculated the best time to set sail.

通过使用航海年鉴，我们计算出了最佳起航时间。

作文

The sea has always been a source of fascination and mystery for humanity. From ancient mariners navigating by the stars to modern sailors relying on advanced technology, the art of navigation has evolved significantly over the centuries. One crucial tool that has stood the test of time is the nautical almanac. A nautical almanac is a publication that provides essential information for maritime navigation, including the positions of celestial bodies, tides, and other critical data that sailors need to plot their courses accurately.Historically, the nautical almanac has played a pivotal role in the development of navigation techniques. Before the advent of modern navigational tools like GPS, sailors relied heavily on celestial navigation, which involves using the positions of stars and planets to determine one's location at sea. The nautical almanac provided sailors with the necessary data about the movements of these celestial bodies, allowing them to calculate their latitude and longitude with remarkable precision.One of the most significant aspects of the nautical almanac is its detailed tables that list the positions of the sun, moon, and stars throughout the year. These tables are calculated based on complex astronomical formulas and are updated regularly to account for changes in the Earth's position and the orbits of celestial bodies. Sailors would use these tables in conjunction with sextants, a traditional navigational instrument, to measure the angle between the horizon and a celestial body, enabling them to pinpoint their location on the globe.In addition to celestial data, the nautical almanac also provides information about tidal patterns and currents, which are crucial for safe navigation. Understanding tides is essential for entering and leaving harbors, as well as for avoiding shallow waters and obstacles. The nautical almanac offers predictions for high and low tides, helping sailors plan their journeys more effectively.With the rise of technology, some may wonder whether the nautical almanac is still relevant today. While electronic navigation systems have largely replaced traditional methods, the nautical almanac remains an invaluable resource for sailors, particularly in emergency situations where electronic devices may fail. Moreover, many maritime schools and training programs continue to teach celestial navigation, emphasizing the importance of understanding the fundamentals of navigation.Furthermore, the nautical almanac serves as a bridge between the past and present. It connects modern sailors with the rich history of maritime exploration and the skills that have been passed down through generations. For those who appreciate the art of sailing, consulting a nautical almanac can be a rewarding experience, allowing them to engage with the traditions of seafaring while honing their navigational skills.In conclusion, the nautical almanac is more than just a book of tables and data; it is a testament to human ingenuity and our enduring relationship with the sea. As we continue to explore the oceans and push the boundaries of navigation, the nautical almanac remains a vital tool that connects us to the past and guides us into the future. Whether you are a seasoned sailor or a novice, understanding the significance of the nautical almanac can enhance your appreciation for the art of navigation and the beauty of the open sea.

大海一直是人类迷恋和神秘的源泉。从古代水手依靠星星导航到现代水手依赖先进科技，航海艺术在几个世纪中发生了显著的演变。海洋年鉴是一个至关重要的工具，经受住了时间的考验。海洋年鉴是一种出版物，提供海上导航所需的重要信息，包括天体的位置、潮汐以及水手准确绘制航线所需的其他关键数据。历史上，海洋年鉴在导航技术的发展中发挥了关键作用。在现代导航工具如GPS出现之前，水手们主要依靠天文导航，即利用星星和行星的位置来确定自己在海上的位置。海洋年鉴为水手提供了有关这些天体运动的必要数据，使他们能够以惊人的精确度计算出自己的纬度和经度。海洋年鉴最重要的方面之一是其详细的表格，列出了全年太阳、月亮和星星的位置。这些表格是基于复杂的天文学公式计算得出的，并定期更新，以考虑地球位置和天体轨道的变化。水手们会将这些表格与六分仪（一种传统的导航仪器）结合使用，以测量地平线与天体之间的角度，从而使他们能够准确定位在地球上的位置。除了天体数据外，海洋年鉴还提供关于潮汐模式和洋流的信息，这对安全导航至关重要。理解潮汐对于进出港口以及避免浅水区和障碍物至关重要。海洋年鉴提供高低潮的预测，帮助水手更有效地规划他们的航程。随着科技的崛起，有人可能会想知道海洋年鉴在今天是否仍然相关。虽然电子导航系统在很大程度上取代了传统方法，但海洋年鉴仍然是水手们在紧急情况下非常宝贵的资源，因为电子设备可能会失灵。此外，许多海事学校和培训项目继续教授天文导航，强调理解导航基础的重要性。此外，海洋年鉴作为过去与现在之间的桥梁，连接着现代水手与丰富的海洋探索历史以及世代相传的技能。对于那些欣赏航海艺术的人来说，查阅海洋年鉴可以是一种有意义的体验，让他们在提升导航技能的同时，参与到海上航行的传统中。总之，海洋年鉴不仅仅是一本表格和数据的书；它是人类智慧的见证，也是我们与海洋持久关系的象征。随着我们继续探索海洋并推动导航的边界，海洋年鉴仍然是一个重要的工具，将我们与过去连接并引导我们走向未来。无论你是经验丰富的水手还是新手，理解海洋年鉴的重要性都能增强你对导航艺术和开放海洋之美的欣赏。