 HISTORY
  H-3794/16--  SHOAL AREA SHOWING A CENTRAL 33 FT (5 1/2 FM) SOUNDING IN POS.56-13-03.3N,  132-50-22.5 W (SE AK DATUM).  CHARTING SOURCE FOR SOUNDINGS WITHIN 10 FM CURVE OF FEATURE. 
  H-1782/1886--SOURCE FOR REMAINING SOUNDINGS OUTSIDE THE 10