The term 'Simple Boat' can refer to two different types of vessels: a RAFT and a CANOE. A RAFT is a flat-bottomed boat that is typically made of logs, planks, or inflatable tubes and is propelled by oars, poles, or sails. A CANOE is a lightweight, narrow boat that is usually propelled by paddles. Both types of boats are relatively simple to construct and operate, making them popular choices for recreational activities such as fishing, camping, and whitewater rafting.