Thus much for the land: By Sea it is impossible to attack Batavia on account of the shallowness of the water, which will scarce suffer even a longboat to come within Canon shot of the walls unless she keep a narrow channel walld on both sides by strong piers and running about _ a mile into the harbour, which channel terminates exactly under the fire of the strongest part of the Castle, where is a large wooden boom which is shut every night at 6 o clock and not opend again till the morn upon any pretence. It is said that before the earthquake in , Ships of large Burthen usd to come up to this place and be likewise shut up by the Boom, but at present nothing but boats atempt it.