Why were the viking longboats good for sailing in shallow waters?

Viking longboats were designed with a shallow draft, allowing them to navigate in shallow waters where deeper vessels could not go. Their lightweight construction and streamlined hull enabled them to be easily maneuvered and propelled swiftly, whether in rivers or coastal areas. Additionally, the symmetrical design of the hull allowed for quick reversals and changes in direction, making them versatile for both exploration and raiding. This adaptability contributed significantly to the Vikings' success in trading and expanding their territories.