| Oil in a thick enough layer on the water to be recovered by conventional techniques and equipment. Only black or brown oil, mousse and heavy sheens are generally considered to be thick enough to be effectively recovered by skimmers. |
| •owl:Thing |
| •amo:Object |
| •amo:Feature |
| •amo:MarineFeature |
| •amo:MarineArea |
| •amo:TimeDurationArea |
| •oilspills:Slick |
| •oilspills:RecoverableOil |
Class(oilspills:RecoverableOil partial oilspills:Slick)