Arch Support generally refers to the part of the insole of the shoe that raises right at the level of the arch to provide support to the midfoot. Arch Support also refers to individual insole cups with a molded shape that fit the arch and are placed inside the shoe to help relieve foot or heel pain.
About Boat Shoes:
Boat Shoes are shoes designed for yachting and sailing activities. Boat Shoes have soft soles and heels to avoid marring or scratching a boat deck. Boat Shoes are two to three eyelet oxfords, often with lacing woven around the heel with a moccasin-like look. Boat Shoes are also commonly referred to as Deck Shoes.