This is an injection-plastic ship model kit.
From the manufacturer:
The U.S. Navy Minesweepers perform the hazardous duty of clearing areas where the presence of mines are suspected. The blimp shaped mechanisms called "Paravanes" are towed by the ship on long steel cables. As the Paravanes are towed through the water, they move out to either side of the ship underwater and locate and bring the deadly mines to the surface. The ship is manned by a crew of 104 and is 184.5 feet long. Armament consists of a single 3-inch gun and a number of anti-aircraft guns.
Completed kit measures 43cm long.