a boat draft
Beam...the widest part of a boat
The beam of a boat is the measured width of the broadest part of a vessel
The definition of beam is the widest part of the boat
that is where the water level is when the boat is in the water.
It is the boat's draft.
The term you are referring to is "draft". The draft of a boat is the depth of water needed for it to float clear of the bottom.
transom
The distance between the bottom and the keel of a boat is the draught (British English).
It is the boat's draft.
It is the boat's draft.
It is the boat's draft.