Associacion de Buques Ibaizabal-Petronor was formed in 1988; its ships were included in Ibaizabal’s fleet by December 2006. Ibaizabal Management Services was formed at Las Arenas in 2002, appearing first under Compañia Valenciana de Navegación and later under Remolcadores Ibaizabal, without an explanation of the transfer.
Keep the explicit scope label independent; no alias or company identity is inferred.