Draught - Part-Based Water & Buoyancy System

Terrain Water cannot fill every pool, canal, moat or flooded room your map needs. Draught makes an upright, non-collidable box Part behave like a water volume. Objects float from their density and displaced volume instead of a hand-tuned hover height. In the measured Studio proof, three 10-stud cubes settled within 0.25 studs of the waterlines predicted from their densities; a denser cube sank to the floor. Quadratic drag is included. Humanoid Swimming support is best-effort, not a replacement for Roblox Terrain Water. Scope is explicit: the water volume must be upright, anchored and non-collidable; other anchored Parts are ignored; tested floaters can take more than six seconds to settle with the default drag. Your Parts keep their shape, material and colour. Use Draught when you need box-shaped Part water with measured buoyancy and accept those constraints. No network dependency is required at runtime.