From the Islands Weekly:
The spring sailing schedule for Washington State Ferries begins Sunday, March 25. Ferry service increases include reopening of the Anacortes/Sidney, B.C. route, with one daily round-trip sailing. For reservations, visit www.wsdot.wa.gov/ferries or call 511. The weekend inter-island vessel in the San Juan Islands will return.
There will be an additional eight hours of afternoon service Monday through Thursday between Anacortes and the San Juan Islands…The complete 2012 spring sailing schedule is available at www.wsdot.gov/ferries/schedule. The spring schedule will be in effect until June 16.