ROCKLAND, Maine — State officials on Thursday showed off the newest addition to the Maine State Ferry Service’s family, the 154-foot-long motor vessel Capt. Almer Dinsmore. Almer Dinsmore. Credit: Stephen Betts / Midcoast VillagerThe Dinsmore was built in the Senesco Shipyard in North Kingston, Rhode Island, and designed by Gilbert & Associates. Credit: Stephen Betts / Midcoast VillagerThe ferry can carry 250 passengers and 23 vehicles.