BATH — In support of Regional School Unit 1’s “Screen Free Week” activities, Maine Maritime Museum will keep its doors open late and extend free admission to all school children and their families from 4 to 7 p.m., Tuesday, April 30.

The event provides the opportunity for parents to bring their children to see the Museum’s 50th Anniversary exhibit, “Ahead Full at Fifty,” which features more than 150 special objects from the museum’s collection — objects that are deemed special because of their historical importance, their beauty or because of the story behind the object. Many of the fascinating objects are on view for the first time and may not be on view again for many years. The exhibit will remain on view only through Memorial Day.

In addition, there will be special child-focused activities. Visitors can self-tour the Percy & Small Shipyard, the only existing shipyard site in the U.S. where large wooden sailing ships were built; learn about the history of lobstering in Maine in the Lobstering and the Maine Coast exhibit; see remnants of the hull of the last American clipper ship Snow Squall; and discover lots of others interesting stories about maritime history in the Mid-coast region and the state.