ship's apparent time

简明释义

地方视时

英英释义

例句

1.Navigators use the ship's apparent time to determine when to take celestial readings.

导航员使用船舶的表观时间来确定何时进行天文观测。

2.To synchronize watches, the crew referred to the ship's apparent time during their morning briefing.

为了同步手表，船员们在晨会期间参考了船舶的表观时间。

3.The captain adjusted the ship's navigation based on the ship's apparent time to ensure accurate positioning.

船长根据船舶的表观时间调整了船舶的导航，以确保准确定位。

4.Understanding the ship's apparent time is crucial for calculating the correct longitude.

理解船舶的表观时间对于计算正确的经度至关重要。

5.The ship's apparent time can differ from local time due to the ship's position on the globe.

由于船舶在地球上的位置，船舶的表观时间可能与当地时间不同。

作文

The concept of ship's apparent time is crucial in the field of navigation, especially for mariners who rely on accurate timekeeping to ensure safe and efficient travel across the seas. Understanding ship's apparent time involves recognizing how the position of the sun affects the measurement of time on board a vessel. Unlike standard time zones that are based on the Earth's rotation, ship's apparent time is determined by the actual position of the sun in the sky relative to the ship's location. This means that the time observed on a ship may vary significantly from the time indicated by a clock set to a specific time zone.To comprehend ship's apparent time, one must first grasp the basics of celestial navigation. Sailors have historically used the stars and the sun to navigate the oceans. The sun rises in the east and sets in the west, and its position changes throughout the day. By observing the sun at noon when it reaches its highest point in the sky, sailors can determine local noon, which is the basis for calculating ship's apparent time. This practice allows mariners to adjust their navigational charts and ensure they are on course.One of the key aspects of ship's apparent time is its relationship with the concept of mean solar time. Mean solar time is a standardized version of solar time that averages out the variations caused by the Earth's elliptical orbit and axial tilt. In contrast, ship's apparent time can fluctuate due to these same factors, leading to discrepancies between the two. Mariners must account for these differences when plotting their courses, as failing to do so could result in significant navigational errors.Additionally, the use of ship's apparent time is not limited to traditional sailing vessels. Modern ships equipped with advanced technology still incorporate this concept into their navigation systems. GPS devices and onboard computers often calculate ship's apparent time to provide accurate positioning information, ensuring that vessels remain on track. This integration of traditional navigation principles with modern technology highlights the enduring importance of understanding ship's apparent time in maritime operations.Moreover, the implications of ship's apparent time extend beyond navigation. It also plays a vital role in communication and coordination among vessels at sea. When multiple ships are operating in close proximity, having a common understanding of ship's apparent time allows them to synchronize their activities and avoid potential collisions. This aspect is particularly critical in busy shipping lanes where the risk of accidents is heightened.In conclusion, the concept of ship's apparent time is an essential component of maritime navigation that combines historical practices with modern technology. By understanding how the sun's position affects timekeeping on a vessel, mariners can navigate more effectively and safely. As the maritime industry continues to evolve, the principles underlying ship's apparent time remain relevant, ensuring that sailors can traverse the world's oceans with confidence and precision.

‘船的明显时间’这一概念在航海领域中至关重要，尤其是对于依赖准确计时以确保安全和高效航行的水手而言。理解‘船的明显时间’需要认识到太阳的位置如何影响船上时间的测量。与基于地球自转的标准时区不同，‘船的明显时间’是由太阳在天空中的实际位置决定的，具体取决于船只的位置。这意味着船上观察到的时间可能与设定为特定时区的时钟所指示的时间有显著差异。要理解‘船的明显时间’，首先必须掌握天文导航的基础知识。水手们历史上一直利用星星和太阳来导航海洋。太阳从东边升起，从西边落下，且其在一天中的位置会不断变化。通过观察太阳在正午时达到的最高点，水手可以确定当地的正午，这是计算‘船的明显时间’的基础。这种做法使水手能够调整他们的航海图，确保他们在正确的航线上。‘船的明显时间’的一个关键方面是它与平均太阳时间的关系。平均太阳时间是一个标准化的太阳时间版本，平均了由于地球椭圆轨道和轴倾斜造成的变化。相比之下，‘船的明显时间’可能因这些因素而波动，导致两者之间的差异。水手在绘制航线时必须考虑这些差异，因为不这样做可能会导致严重的导航错误。此外，‘船的明显时间’的使用并不限于传统的帆船。现代船只即使配备先进技术，仍然将这一概念纳入其导航系统。GPS设备和船上计算机通常会计算‘船的明显时间’，以提供准确的定位信息，确保船只保持在正确的航线上。这种将传统导航原则与现代技术相结合的做法突显了理解‘船的明显时间’在海事操作中的持久重要性。此外，‘船的明显时间’的影响超越了导航。它在海上船只之间的通信和协调中也起着至关重要的作用。当多艘船只在近距离内操作时，拥有对‘船的明显时间’的共同理解使它们能够同步活动，避免潜在的碰撞。这一方面在繁忙的航运通道中特别重要，因为事故风险加大。总之，‘船的明显时间’这一概念是海事导航的重要组成部分，它将历史实践与现代技术相结合。通过理解太阳的位置如何影响船上的计时，水手们可以更有效、安全地进行导航。随着海事行业的不断发展，支撑‘船的明显时间’的原则仍然相关，确保水手能够自信、精确地穿越世界的海洋。