How long does it take for Sydney to go to New Zealand by boat?

according to the inquiry of the planning website for studying in Australia, Sydney is located in Australia, and both New Zealand are countries in the southern hemisphere, so the distance is relatively close, and there are many air routes between the two countries, making it convenient to travel. Moreover, the route between Australia and New Zealand is very busy, and there are direct flights to major cities in almost every country. The flight time from Sydney to Auckland is about 3 hours, while the flight time from Melbourne to Auckland is about 4 hours. Flights are also very frequent, and there are usually multiple flights in one day. If you like to travel by sea, taking a ship is also an option. At present, some companies provide cruise services from Sydney to Auckland. The voyage takes about 5-6 days, enjoying delicious food and sea scenery. If you want to explore New Zealand, self-driving is a very good choice. From Australia to New Zealand, you need to deliver the car to the port of Sydney or Melbourne first, and then take a large ferry to New Zealand. Go on road trip is very free, which gives you a deeper understanding of New Zealand culture, attractions and food.