JUNEAU -- The Coast Guard will host a Southeast Alaska petroleum spill exercise Wednesday at the Ted Ferry Civic Center in Ketchikan.

The exercise will be a tabletop oil spill response based on a scenario of a vessel collision near Sitka.

The Coast Guard says the exercise is designed to test the Southeast Subarea Contingency Plan.

The document was written for the planning of responses to large oil or hazardous substance releases.

The Alaska Department of Environmental Conservation, Alaska Marine Highway System, Kirby Offshore Marine, Southeast Alaska Petroleum Resource Organization, Alaska Department of Fish and Game, U.S. Fish and Wildlife, National Oceanic and Atmospheric Administration, and the Department of the Interior will participate.