Nautical Chart / Marine Chart

AUS 821

Hydrographers Passage
AUS 821 - Hydrographers Passage

Please note that all charts are nominally folded in half for storage and handling as per the marine industries standard.
If you require an unfolded copy (ie: flat for framing), please select Flat Paper, and we will organise a special print service to accomodate your request.


This official Nautical Chart is produced by the Australian Hydrographic Office, and corrected fortnightly to 'Notice to Marines' by Cairns Charts & Maps. This ensures it remains compliance with Safety of Navigation requirements. This marine chart, or 'sea map', is primarily produced to support the safe navigation of commercial shipping through Australian, Papua New Guinea and Solomon Island waters.

Nautical charts depict the seabed, or bathymetry, using a variety of colours to shade the depth regions. Darker blues indicate shallower water, while light blues and white indicate deeper water. A chart will also show continuous contour lines (at varying intervals depending on the scale of the chart), 'spot depths' across the whole area, as well as different symbols indicating wrecks, shallow rocks and dangers, as well as details on lights, light houses, tides and currents.

For extensive detail on the symbology of nautical charts, the Symbols and Abbreviations used on Admiralty Charts is the definitive reference.

Locations within this Map

Abott Reef Bax Reef Ben Reef Blossom Bank Bond Entrance Bond Reef Boulton Reef Bramble Passage Briggs Reef Bugatti Reef Bushy Islet Bushy Island National Park Calder Island Cannan Reef Chauvel Reefs Chefs Shoal Cole Reefs Crab Reef Creal Reef Credlin Reefs Deliverance Bank Derwent Island Edgell Reefs Ferris Shoal Goble Reefs Gargoyle Reef Hewitt Reef Hunt Reef Hyde Reef Hydrographers Passage Lath Reef Liff Reef Little Bugatti Reef Marilyn Shoal Marton Maschke Shoal Napier Reef Nixon Reef Oom Reef Packer Reefs Parker Reef Paterson Shoal Penrith Island Peta Patches Plaster Reef Pompey Reef Rafter Reef Rebe Reef Redbill Islet Refuge Bay Robertson Reefs Round Reef Sandpiper Reef Scawfell Island Sharon Shoal Sheriff Shoal Skull Rock Southampton Reef Square Reef Stevens Reef Stucco Reef Tern Islet Thompson Shoal Three Rocks Tideway Reef Wackett Reef Warland Reef White Tip Reef Williams Reef Wup Reef Wyatt Earp Reef South Cumberland Islands National Park Girder Reef Thatch Reef Eave Reef Brick Reef Tile Reef Howse Reef Conder Reef Kerwin Reef Henderson Reefs McIntyre Reef Slate Reef Reimer Reef Tompson Shoal Abbott Reef James Reef Hunt Reefs Gable Reefs Sandy Camp Waterhole Very Shoal Term Isle Tern Island Tern Isle Bushy Island Redbill Island Redbill Isle