Sentence:  Sur stands on the coast of Syria, on the sea, twenty-five miles from Acre both by sea and land. Four or five large and long rocks lie in the sea before the city, some of them appearing a little above the water, the rest concealed below it. These rocks form the port of Sur, which admits ships of sixty or eighty tons, but none of a larger size; and all flat-bottomed <WSD>fusts</WSD>. 
Meaning of the word marked with <WSD> tags:  A type of small galley.