The Spanish ship register sorts boats into lists. Recreational boats are on lista 7 if they're private and lista 6 if they're used commercially, such as for charter. The list is on the registration document and the certificado de navegabilidad.
What it changes
Under Real Decreto 1434/1999, every lista 6 boat gets periodic inspections whatever its length, and lista 6 boats from 6 m an intermediate one too. Lista 7 boats get periodic inspections from 6 m, intermediate ones from 15 m or with a wooden hull. A move from lista 7 to lista 6 needs an additional inspection. The Islander's legal guide notes that for lista 6 and 7 boats, ownership can be shown with the invoice, bill of sale or a private document, with the taxes paid.
In the report
"Registered on lista 6, previously in charter. Intermediate inspection out of the water due under Real Decreto 1434/1999; charter wear noted in the findings."