| | Harbormaster is a tide clock with a patented quartz movement. Powered by a single AA battery (included), Harbormaster tracks according to the average time between lunar high tides (12 hrs, 25 min.). Fluctuations in conditions, location and the distance of the Moon from Earth can effect this average. However, over a lunar month, Harbormaster will provide a practical indication of local tides.
Our simple mounting system makes it easy to remove from the wall for battery replacement or to make adjustments for different locations. | | 
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