This Law concerns the registration, the use and control of vessels not exceeding 20 NRT: motor-powered vessels, private, with weight not exceeding 20 nrt; police vessels, etc, there are other specific rules. The registration of vessels is done by port authorities. After the registration the owner of the vessels acquires a user's certificate. Penalties and offences are prescribed therein. The provision of Law No. 7873 of 16 November 1994 "For confiscation, sea and air transport vehicles which are