AHO Charts

The Australian Hydrographic Office (AHO) produces official paper charts and Electronic Navigational Charts (ENC) for:

  • Australia
  • Australian Antarctic Territory
  • Papua New Guinea
  • Solomon Islands

You can find the latest editions and updates for these products using two different tools:

  • AHO Chart Explorer: A map-based web application.
  • Australian Chart Index (ACI): A text-based list.
Australian Chart Explorer

AHO Chart Explorer

The AHO Chart Explorer is an interactive web application for finding AHO nautical products.

Use it to discover and select official paper charts, Electronic Navigational Charts (ENC), and AusENC packs through an intuitive, map-based interface.

Key features:

  • Visualise ENC content: The application includes a not-for-navigation AHO ENC Online layer. This allows you to see the contents of ENC products directly on the map.

  • Check chart currency: Find the latest edition and update information for products. We strive to update this information weekly.

  • View data quality: Understand the accuracy and reliability of bathymetric data through the Zone of Confidence (ZOC) layer.

  • ENC Feature Search: Search for, and zoom to specific charted features.

  • ENC Feature Query: Identify features and view their attributes.

  • Access help: An integrated user guide is provided to help you use the application.

Official charts and safety

The AHO Chart Explorer is an interactive product discovery tool and is not for navigation.

For safe and compliant navigation, you must always use official nautical charts and publications.

AHO products can only be obtained from authorised Distribution Agents.
Australian Chart Index

Australian Chart Index (ACI)

For a text-based alternative, you can use the Australian Chart Index (ACI).

This tool provides simple lists of paper charts and ENCs, as well as:

  • AusENC pack lists

  • PDF indexes for Solomon Islands and Papua New Guinea