A code number for the applicable control action. Examples are: 10: Deficiency rectified; 15: Rectify deficiency at next port; 16: Rectify deficiency within 14 days; 17: Master instructed to rectify deficiency before departure; 18: Rectify non-conformity within 3 months; 19: Rectify major non-conformity before departure; 30: Grounds for detention; 40: Next port of call informed; 50: Flag State/consul informed; 70: Classification society informed; 85: Investigation of contravention of discharge provisions in MARPOL.
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