Baltimore Steam Packet Company was created in 1840.
Drogheda Steam Packet Company was created in 1826.
Dundalk Steam Packet Company was created in 1837.
Alderney Steam Packet Company was created in 1897.
Caledonian Steam Packet Company was created in 1923.
Isle of Man Steam Packet Company was created in 1830.
Royal Mail Steam Packet Company was created in 1932.
Drogheda Steam Packet Company ended in 1902.
Dundalk Steam Packet Company ended in 1870.
Alderney Steam Packet Company ended in 1931.
Caledonian Steam Packet Company ended in 1973.
Queensland Steam Shipping Company was created in 1885.
Willamette Steam Navigation Company was created in 1865.