This application plays the sounds of a ship's bell every hour and half hour. The strike of a ship's bell are used to regulate the sailors' duty watches. Unlike a regular clock, the strikes of the bell do not correspond to the number of the hour. Instead, there are eight bells, one for each-half hour of a four-hour watch.
By design, the app just plays the Ship's Bells in the background, which enables one to tell the time without looking at a time piece - just as they did in the early days of sailing.
Upgraded to run under the latest version of iOS
ShipsBells now strikes the bells in the background and does not have to be running.