The Spanish Maritime Authorities have tightened their pollution control measures with tighter surveillance and sanctions against shipowners, managers, operators, masters and P&I Clubs found guilty of pollution. Fines range from Euro 60,101 to Euro 3,005,060.05. Recently there have been reports of large guarantees being demanded by the Spanish Authorities for relatively minor pollution incidents. Where there is a case of pollution, the ship will be detained by the harbour master and a bond is needed to release the ship. P&I Club LOUs are not acceptable.