The Horseshoe run of the Union Steam Ship Company carried passengers and cargo between Australian and New Zealand ports in the late 19th century. Several ships were used from 1882 for about 15 years: the SS Hauroto, the SS Manapouri, the SS Tarawera, and the SS Wairarapa:Sailing from Port Chalmers, she made calls at Lyttelton, Wellington, Napier, Gisborne, and Auckland; also at Opua for bunkers en route to Sydney, returning via the same ports to Port Chalmers then continuing on to Bluff, Hobart, and Melbourne, then returning to Port Chalmers. After a few years all the North Island ports except Wellington were omitted.