Yes, you can use public transport to go to the Spaceships depot in Auckland.
From Auckland airport: bus 38 to Onehunga, travel 9 stops and get off at the 1 Ascot Road Stop, then walk 850 metres to our depot.
From the city centre (CBD): From Britomart Train Station (Downtown) there are several train options to get the the Spaceships depot. Check the Auckland Transport Planner for all public transport options from the city centre to the Spaceships depot in Auckland.
See for more info about the Auckland depot and how to get there.