We are trying to plan a trip, including Seattle, Olympic National Park, stop in either San Juan or Gulf Islands, then onto Vancouver. We are not all that interested in Victoria. Is there one all-encompassing area map that indicates ferry service (all the different companies)? Specifically, we need car ferries. thanks.

http://www.wsdot.wa.gov/mapsdata.htm

I haven't found one and I couldn't find one on the link John posted, but here's a link to the WA State Ferries route map:

http://www.wsdot.wa.gov/ferries/info_desk/route-maps/

If you add in the Coho between Pt Angeles and Victoria and the BC Ferries route between Swartz Bay (near Sidney, outside of Victoria) and Tsawwassen (south of Vancouver), then you'll have a pretty complete picture.

http://www.ferrytravel.com/map.htm

Ooh, great map, Gardloo--it even shows the passenger only ferries, very cool.