Two SSA crew members during a rescue boat drill this afternoon in Vineyard Haven Harbor. – George Brennan

If you saw the MV Island Home moving slowly in Vineyard Harbor at this hour, it’s only a drill.

The 2:30 pm crossing between Vineyard Haven and Woods Hole includes a rescue boat drill, according to the crew announcement.

The drill is drawing a crowd of onlookers on the boat because of the gorgeous weather.