This year marks the 400th anniversary of Captain John Smith’s voyage and mapping of New England, and the dedication of a new monument to him in Rye, N.H. The obelisk at Rye Harbor State Park is made of four pieces of New Hampshire granite and has a bronze reproduction of Smith’s map. It is enlarged to 26 inches tall from the original size of 12 inches. The monument also features an engraving of the compass, which is oriented to the north and east. Smith mapped the coastline from Penobscot Bay to Cape Cod. His map and book, ‘‘A Description of New England,’’ helped guide the Pilgrims as they settled Plymouth, Mass., in 1620. The state Legislature authorized in the 2013 capital budget funds up to $40,000 to be matched by private funds. The dedication is scheduled for Thursday at 10:30 a.m.