Sentence:  The <WSD>Swatch</WSD>, or <WSD>Swatch</WSD> of no ground, a chaſm in the bank, is ſituated between the latitudes of 21° and 21° 22′ North, and the middle of it lies about 50 leagues Weſt of the meridian of the White Cliffs. 
Meaning of the word marked with <WSD> tags:  A channel or passage of water between sandbanks, or between a sandbank and a seashore.