The 106 foot long Charles W Morgan, built in 1841, is the last wooden whaling ship afloat. It's also the oldest commercial ship (except for the Constitution). The Morgan was manned by about 35 sailors. By contrast, a modern container ship three times the size of the Morgan needs about a dozen sailors.
The Morgan was in service for 80 years - a typical voyage lasting at least three years. She survived arctic ice, hostile natives, fierce storms, even the great hurricane of 1938.