Dhameystir weedha soo socota: July 2, 1987 Markabka qaada shidaalka ee Glacier Bay ayaa ku dhacay meel biyaha hoosteeda ku taalo oo ku taalo xeebaha Montague Strait waxayna ku daadisay 125,000 gallon oo saliid ah. Markabka ayaa ku sii jeeday warshad ku taal Cook Inlet oo ka timid Valdez, Alaska, markii ay dhacdadu dhacday. "Sedge" waxaa loo diray inay noqoto xarunta maamulka ee 21 markab oo doonaya inay shidaalka dib u soo ceshadaan. Bishii Maarso 24, 1989, markab kale oo nooca xamuulka qaada ah oo ka baxay Valdez ayaa ku dhacay qasaaro ka daran.
"Exxon Valdez" waxay ku dhacday Bligh Reef ee Prince William Sound saliid ceyriin ah. "Sedge" waxay ahayd markabkii ugu horreeyay ee ilaalada xeebaha ee ka jawaabaya goobta. Nidaamka Xakamaynta Saliida ee Biyaha Furan iyo Soo-celinta ayaa la soo dejiyey iyo "Sedge" ayaa ka soo saaray in ka badan 8,900 foosto oo saliid ah badda. Waqtiyada kala duwan ee jawaabta daadinta waxay sidoo kale sameysay sahaminta xeebta iyo waajibaadka xakamaynta taraafikada hawada. Sanadkii 1990-kii shaqaalaha markabka "Sedge" ayaa dhistay nalka iftiimiya ee hadda calaamadeynaya Bligh Reef.