A sketch by chronometer & compass, of St. John's River, by Bar. Bulow, July 22, 23, 24th, 1847 in his progress down the River in a Bongay, about 50 feet long by about 9 feet broad, drawing with a freight of 5 tons and 13 persons, 4 feet water. Image Read more about A sketch by chronometer & compass, of St. John's River, by Bar. Bulow, July 22, 23, 24th, 1847 in his progress down the River in a Bongay, about 50 feet long by about 9 feet broad, drawing with a freight of 5 tons and 13 persons, 4 feet water.