First, read the English article below.

You should use one specific to the area you plan to visit, as beaches, harbors and fishing sites that are near each other can have dramatically different tides.  Local newspapers typically print tide tables near weather information. Marinas are likely to have tide tables specific to the area. Reference stations constantly collect data to provide detailed tide information.  Their findings are available online and can be found through a simple search. Tidal information may be printed for a week or more in advance.  If you are planning an outing for tomorrow, use tomorrow’s date.  If your plans are flexible, look instead for the data that is most important to you, such as finding a low tide at a convenient time.  This may mean waiting several days for the best opportunity. Remember that high and low tide times will be different every day, so do not make plans for the future based on a chart for the present. This term refers to a plane of reference against which tidal heights are measured.  It is an average of low tide heights.  This number is set low so that most low tides will not fall below it. It is also the reference point that nautical charts use to measure depth. High tide will be expressed as a positive number, sometimes with a plus (+) sign before it.  This number indicates how high above Chart Datum the tide will be at its greatest swell.  A high tide indicated as an 8 tells you that at its highest, the water will be 8 feet (2.4 m) above the average low water mark. Remember that outside the United States the metric system prevails and measurements will be in meters, not feet. Low tide will be expressed as a small number, or possibly a negative number.  This number indicates the relationship between the water depth at its lowest ebb and Chart Datum.  Because Chart Datum is an average, not the absolute lowest the tide could ever be, sometimes low tide will fall below the average low water mark.  When low tide is expressed as a negative (-), it means the tide will fall below Chart Datum. For example, -1... 

Now, please write a short abstract for it in Indonesian. Abstract:
Carilah tabel pasang surut air laut. Carilah tanggal yang relevan. Pahami Chart Datum. Carilah informasi pasang tinggi. Carilah informasi pasang rendah. Bacalah waktu pasang. Pahami arah swell. Bacalah ketinggian dan interval.