3 ms·MARPOL is utterly toothless and not enforced, and also only really covers 12 nautical miles from land.by dogma1138 7y agoMARPOL is utterly toothless and not enforced, and also only really covers 12 nautical miles from land.pas 7y ago12 nm is enough, as most inspections occur close to shore.jdc 7y agoCool.. let's enforce it.