New Zealand Hydro Authority Charts      New Zealand, the Western South Pacific, and Antarctica New Zealand Hydro Authority Charts are the standard for the southwest Pacific with brilliant color and up-to-date information.  Search for charts for charts by area using the list below. Small Scale Planning Charts Southwest Pacific Ocean New Zealand New Zealand, North Island New Zealand, South Island New Zealand, North Island--Northern Zone New Zealand, North Island--Auckland Zone New Zealand, North and South Island--Cook Strait Zone New Zealand, South Island--Southern Zone Tonga Southern Ocean and Ross Dependency