[en] This paper examines the physical limitaions on spill encounter rate and how these limitaions affect the are that can be covered in spill response. Since mechanical recovery devices may not be able to cover the affected area in a large spill, in situ burning must be considered as a response option. Further, effective recovered oil logistics is essential to successful response operations and keeping skimmers operating. A successful spill response effort in a very large oil spill often depends on: Prompt response, Skimmer encounter rate, Making a decision for in situ burning, Recovered oil logistics