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Actually all the numbered marks you mentioned in your comment are buoys, some with light signals, some without. There are however beacons (BN) north of red nun buoy "20" and in the southeastern area around Great Aquavitae. Check http://nauticalcharts.noaa.gov/mcd/chart1/aids/Q.pdf for chart symbols! De728631 (talk) 19:59, 15 July 2008 (UTC)[reply]
