Travel advisory: Steamship Authority ferry service in and out of Oak Bluffs has been diverted to the port of Vineyard Haven today due to rainy, windy conditions. Detailed information is posted on the boat line’s Web site at steamshipauthority.com. Ferry service between Hyannis and Nantucket was cancelled Saturday morning due to the weather. Vineyard service has been running all day between Woods Hole and Vineyard Haven. There is some traffic congestion around the Vineyard terminals today; if you are traveling on the ferry, allow extra time.