When are the surveys required for the International Oil Pollution Prevention (IOPP) Certificate conducted?

The International Oil Pollution Prevention (IOPP) Certificate is a crucial component of the MARPOL regulations aimed at preventing oil pollution from ships. Surveys for this certificate are conducted at specific intervals designed to ensure ongoing compliance with the regulations.

Surveys are required at the time of initial issuance of the certificate to confirm that the vessel meets all necessary standards and regulations. Subsequently, the regulations require that a thorough survey is conducted one year after the initial issuance. This annual survey helps to ensure that the vessel continues to comply with the provisions of the International Convention for the Prevention of Pollution from Ships, specifically regarding oil pollution prevention measures.

Furthermore, a more comprehensive survey is mandated three years after the initial issuance. This interval allows for a detailed inspection of the vessel's systems, equipment, and adherence to established safety protocols, ensuring that any changes in conditions since the last survey are assessed. The periodic nature of these surveys is designed to maintain a high standard of safety and environmental protection throughout the operational lifespan of the vessel.

Thus, the correct choice indicates the requirement for these surveys occurring both one year and three years after the initial issuance, reflecting the structured approach to maintaining compliance with international pollution prevention standards.