WSF boss David Moseley, in his weekly e-letter, said the system has steadily improved its on-time performance the past three years, especiallly on the Edmonds-Kingston route. It has cut the average delay on that route in half in each of the past two summers. It was 8 minutes in 2009, 4.5 minutes in 2010, and 2.4 minutes this year. It has gone from 70 percent of sailings leaving within 10 minutes of scheduled departure time in 2009 to 97 percent in 2011. The improvements were made even with the crews slowing the boats during off-peak times to conserve fuel.