Flat-bottomed harbor boats, also known as SCOWS (5 letters) and LIGHTERS (8 letters), are vessels that are designed to navigate shallow waters. They are typically used for transporting goods and materials in harbors, rivers, and canals. SCOWS are usually larger than LIGHTERS and have a flat bottom and square bow and stern. LIGHTERS are smaller and more maneuverable than SCOWS, and they are often used to transfer cargo between ships and shore.