But plans went awry, local media reported, after New Zealand officials asked the ship to leave the country's waters part way through its cruise after finding small amounts of biofoul - plants, algae and small animals - that grow on ship hulls. Steaming directly to the southern Australian port of Adelaide and bypassing planned stops in Tasmania and New Zealand's south island, officials stopped the ship approximately 12 nautical miles out to sea while professional divers cleared the hull.