Answer
• Ans similar to Q14
• Conditions to open Marpol simple:
1-On the basis of lab analysis report (on the request of the previous port)
2-On the basis of inuse sample
3-In case of pollution Incident
• Marpol simple: 12 months or till the fuel is fully consumed, whichever is later
• Ship sample: no less than 90 days from the date of delivery