The four-masted, iron-hulled ship, introduced in 1875 with the full-rigged , represented an especially efficient configuration that prolonged the competitiveness of sail against steam in the later part of the 19th century. The largest example of such ships was the five-masted, full-rigged ship , which had a load capacity of 7,800 tonnes. Ships transitioned from all sail to all steam-power from the mid 19th century into the 20th. Five-masted "Preussen" used steam power for driving the winches, hoists and pumps, and could be manned by a crew of 48, compared with four-masted "Kruzenshtern", which has a crew of 257.