Ships Bell is primarily an acoustic clock that sounds half-hourly or hourly time signals. Without taking the phone out of your pocket you can easily keep track of time. The principle of this bell was founded in traditional seafaring. Seafarers used the bell to keep track of their four-hourly duty watches. The first half hour is signaled by a single bell strike. Another bell strike is added every half hour, ending with eight bell strikes. To hear the bell strikes better, they are grouped into double chimes. Eight bell strikes signaled a watch change – at midnight, 4 am, 8 am, 12 pm, 4 pm and 8 pm. With just eight different signals, being repeated in six cycles during the day, you will know what time it is every half and full hour. • Ships bell according to the seafaring tradition • Two different kinds of chimes: classic bell or a modern synthesized sound • Option to strike only once each hour • Two different chimes for hourly signals: a single beep or a triple signal counting down to the full hour • Displays the current time on a maritime 24-hour clock face • Shows Greenwich Mean Time (GMT) • Switch to quickly enable or disable the acoustic signals A new addition in version 3.0 is the Tide Clock. An additional clock hand and a tide ring can now be activated on the two dials of the glass clock (12-hour or 24-hour dial). This makes it possible to estimate the time until the next high or low tide in the style of a mechanical tide clock. The tide clock hand makes one revolution within 12 hours and 25 minutes independently of the hour clock hand and thus shows the average time between two high or low tides. The indices on the tide ring show the hours before and after a coming or past high or low tide. Dear customers, If there are any issues with this app, please send an email to our support team. We will get back to you as soon as possible!