SUP (stand-up paddleboard)
Also: stand up paddling, iSUP
A SUP is a board you paddle standing up with a single-bladed paddle. Inflatable SUPs are popular but less suitable for luggage and wilderness trips.
Standing up, the board catches a lot of wind, and luggage sits exposed on top. It's great for outings on calm water, but for hike & float or rivers with obstacles a packraft is the better choice.