Tides—Currents.—The flood, or SE current, increased by the E current which prevails N of Pulau We, sets into the strait between Pulau Rubiah and the main island at the rate of 3 knots at springs; the ebb current is much weaker.
Selat Benggala (Bengalen Passage), formed between Pulau Beueh and Pulau Weh, is about 10 miles wide and deep. It is the best approach for coastal vessels with local knowledge to the Strait of Malacca from W. Southwest or NE winds, according to the time of year, always prevail, and are fairly steady.
Vessels should approach the passage from E of Pulau Benggala (Northwest Island) to avoid the dangers between it and Pulau Breueh. There is generally a NW current of from 1 to 2 knots through the fairway of Selat Benggala.
Caution.—A small area located between the SW side of Pulau Rubiah and the main island is reported to be dangerous due to the presence mines.