Wikipedia
Partenreederei
A (Plural: ) is a type of partnership under German and German-influenced maritime law for the joint ownership of a merchant vessel. Each partner, or , functions as an equity partner, sharing proportionately in the proceeds, as well as the corporate debt of the business—this liability is not limited. This form of ownership is related to the Dutch system that ultimately gave rise to joint-stock companies, and dates back to the Middle Ages.
As a system of business organization, was very common in the Baltic Sea and in England in the 1870s.