Draft is used for watercraft in the Vehicle Statblock and is the minimum depth of water, in feet, that it can safely operate in. Anything shallower will cause the vessel to run aground, damaging the hull.
In Vehicles Classic[]
Draft depth is affected by the nautical lines of the ship. Flatter, wider vessels (such as coracles and fanboats) have shallower drafts, while sharper, sleeker vessels (such as cutters) have deeper drafts. The deepest proportional drafts belong to submarine nautical lines, which tend to navigate deep water anyway.
References[]
- Basic Set, p.463