In addition to these Conventions, two private agreements, one entered into among shipowners, the Tanker Owners Voluntary Agreement Concerning Liability for Oil Pollution (TOVALOP) and another entered into among oil companies, the Contract Regarding an Interim Supplement to Tanker Liability for Oil Pollution (CRISTAL), institute a “voluntary” system intended to indemnify the victims of pollution, in particular the Governments which carry out actions for prevention or for rescue.
Outre ces conventions, deux accords privés, l'un conclu par les propriétaires, l'accord TOVALOP (Tanker Owners Voluntary Agreement Concerning Liability for Oil Pollution) et l'autre conclu par les compagnies pétrolières, l'accord CRISTAL (Contract Regarding an Interim Supplement to Tanker Liability for Oil Pollution), instituent un système « volontaire » d'indemnisation des victimes de la pollution, en particulier les gouvernements qui prennent des mesures de prévention ou mènent des opérations de sauvetage.