Sheet 86D/10/NE Mask Island HIND 1023 First Edition 1943, reprinted 1943. First Edition, Jul 1943. Compiled from 1:40,000 air survey Jan 1943, and half-inch (1:126,720) published sheet 1886. HIND 1023. Published SGI. Reg.No.784 X.D.D'43–X'43. Printed SIO. Yard Grid IVB.