<prompt> Bhala okuqhubekayo kwalesi sigaba - INASSCO yaqala ukwakha imikhumbi yezimpahla ezentengiselwano ngo-1959, ekugcineni yahlanganisa imikhumbi emikhulu yezimpahla namathangi kawoyela e-Alaska. Umkhumbi wayo odume kakhulu wezohwebo kwakuyi-tanker Exxon Valdez, eyaqedwa ukwakhiwa eNASSCO ngo-1986, kwathi ngo-1989 yabuyela eNASSCO ukuze ilungiswe ngemuva kwengozi yayo nokuchitheka kukawoyela  <response>: e-Alaska. NgoDisemba 2012 inkampani yasayina inkontileka yokwakha imikhumbi emibili yamakhonteyina enikwe amandla yi-liquefied natural gas LNG. Lapho seziqediwe ziyoba imikhumbi emikhulu kakhulu esebenza nge-LNG yanoma yiluphi uhlobo emhlabeni. 