AUCKLAND COASTAL DEFENCES 1939 - 1944

AUCKLAND COASTAL DEFENCES 1939 - 1944SCOPETypes of defences.Mines, Harbour Boom and Indicator Loops.Where they were, in and around the harbour.War Office Policy

First class defended port, Auckland

Gun batteriesMotutapu, North Head and TakapunaPort war Signal Station

HARBOUR BOOMWar Cabinet decides to construct Harbour Boom 30 December 1940.

Wooden piles from Australia.

Wire net from the United States. Harbour boom completed in September 1942. HARBOUR BOOM

MINEFIELDSCONTACT MINEFIELDS:200 between Tiritiri Matangi and Motuhauraki Islands200 between Tiritiri Matangi Island and the Noises Rocks16 between Rakino Island and the Noises Rocks6 between Motutapu and Rakino Island

CONTROLLED MINEFIELDS:9 Loops in the Whangaparaoa Peninsula

MINEFIELDS

INDICATOR LOOPSLoop A - Rangitoto channel up from Takapuna Head

Loop B - Across the Motukorea channel between Rangitoto and Browns Island

Loop 1 & 2 Two between Waiheke Island and the Noises Rocks

Loop 3 Two between the Noises Rocks and Tiritiri Matangi Island

Loop 4 - Across the northern entrance to the Whangaparoa Passage INDICATOR LOOPS

HARBOUR BOOM

ASDIC ARRAYSA HDA Between Motutapu and Waiheke IslandB,C and D HDA - between Whangaparaoa Peninsula and Rakino Island.

1, 2 and 3 HDA - Off Takapuna Head and between Browns and Rangitoto Islands

High Detection Assisted Arrays

Puna Anti Submarine Fixed Defence Station