Sheet 86D/13/NE and 86H/1/NW Sound Island HIND 1023 First Edition 1943, reprinted 1943. First Edition, Jun 1943. Compiled from 1:40,000 air survey Jan & Feb 1943. HIND 1023. Published SGI. Reg.No.722 X.D.D.'43–X'43. Printed SIO. Yard Grid IVB. Sheet 86D/13/NE extended and extruded east into area of quadrangle 86H/1/NW for Simpson Point on Sound Island.