You can find the times of high and low water in a local tide table, and the direction of the tidal stream from a pilot guide, tidal atlas or chart of the area. It is best to sail from an RYA Recognised Training Centre but, if you do go out, if you are in any doubt, ask an experienced local sailor for advice. Tell a reliable person of your plans and the time you expect to be back so they can notify the rescue services if you do not return on time.


⾼潮和低潮的时间可在当地潮汐表中查询；潮流⽅向则可通过航⾏指南、潮流图集或海图了 解。理想情况下，从RYA认证的培训中⼼出发为好。若⾃⾏出航且⼼存疑问，应向当地经验 丰富的⽔⼿请教。同时，务必将你的航⾏计划和预计返航时间告知⼀个值得信赖的⼈。以防 特殊情况发⽣，你未按时返回，对⽅可及时通知救援机构。


Tides 潮汐


Whatever your level, as soon as you go sailing in the sea you need knowledge of both general tidal effects and local tidal characteristics. An understanding of tides plays an essential role in making sailing safe and enjoyable.


⽆论你的航⾏⽔平如何，⼀旦出海，就必须了解潮汐的⼀般规律以及当地的潮汐特点。掌握 潮汐知识，不仅能提⾼航⾏的安全性，也能让航⾏变得更顺利、更有乐趣。


Tidal Movement 潮汐运动


The two elements to tides affect sailors – vertical and horizontal movements. 潮汐对航⾏的影响主要体现在两⽅⾯：垂直运动和⽔平运动。


Vertical Movement 垂直运动


The movement of water up and down a beach or sea wall is known as tidal range. Vertical movement varies daily and from area to area. When the water is rising, the tide is coming in or flooding. When the water is falling, the tide is going out or ebbing.


海⽔沿着海滩或海堤上下升涨落的现象，称为潮差。这种垂直变化每天都会发⽣，并且不同 地区之间也存在差异。当⽔位上升时，潮⽔上涨，称为涨潮；当⽔位下降时，潮⽔退去，称 为退潮。


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