Article 1

1. For the purposes of this Convention

(a) the expression "registration office" means any office which keeps a register such as is referred to in article 2 of this Convention;

(b) the term "vessel" shall be deemed to include hydroplanes, ferryboats, dredges, cranes, elevators and all other floating appliances or plant of a similar nature.

2. It is expressly stipulated that the expression "owner" of the vessel used in this Convention shall be interpreted according to the national law of the Contracting Party in one of whose registers the vessel is registered.