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All questions
Safety

Under MARPOL Annex V, which garbage must not be deliberately discharged at sea?

Short answer

Plastics

Annex V starts from a prohibition and does not provide a routine discharge exception for plastics. Food waste has narrow conditional exceptions; cardboard and metal are also not made dischargeable by distance. Bring them ashore. Revise the decision table in Garbage Disposal.

Sources and scope

Reviewed by Richard Moore on . This answer is scoped to united kingdom and general recreational seamanship; check the current chart, publication, local rules and official operational guidance before acting afloat.

Quick check

Under MARPOL Annex V, which garbage must not be deliberately discharged at sea?