A tjalk is a traditional Dutch flat-bottomed boat, primarily used for cargo transport in shallow waters. Characterized by its wide beam and shallow draft, the tjalk is well-suited for navigating the canals and rivers of the Netherlands. These boats often feature a single mast and a gaff rig, allowing for efficient sailing. Historically, tjalks were essential for trade and fishing, especially in regions like Friesland and Holland. Today, many tjalks have been converted into recreational vessels, serving as houseboats or leisure crafts, preserving their cultural significance in Dutch maritime heritage.