Hoagie

A submarine, also known as a sub, hoagie, hero, filled roll, grinder, wedge, spukie, or Italian sandwich, is the name given in the United States to a type of sandwich that consists of a length of bread or roll split lengthwise and filled with a variety of meats, cheeses, vegetables, and condiments. The sandwich has no standardized name, with over a dozen variations used around the world. Larger submarine sandwiches, particularly those that are longer in length or overstuffed with greater quantities of ingredients than usual, are sometimes called battleship sandwiches, flattop sandwiches or destroyer sandwiches(source)