Lower and upper deck
The hull.
deck
deck
The bottom of a cave is a floor. Sounds obvious but it is the technical term.
floor
The bottom of the rain forest is called the forest floor.(by sarah)
Forest floor
The bridge
The bottom of the sea is called the sea bed or sea floor.
It's called the hull (pronounced hul). It's the lowermost part of a ship - the part of the ship that is submerged under water. The "line" along the center of the bottom of the hull of the ship is the keel of the ship. It's laid down first when the ship is built, and is a structural component. It could be looked at as the "backbone" of the ship.
It's called the hull (pronounced hul). It's the lowermost part of a ship - the part of the ship that is submerged under water. The "line" along the center of the bottom of the hull of the ship is the keel of the ship. It's laid down first when the ship is built, and is a structural component. It could be looked at as the "backbone" of the ship.
No, it is not. The word bottom is a noun for the lower part, or lower extremity, of an object or thing. (e.g. bottom of a box, bottom of a river, bottom of the page) *In naval submarine language, bottom can be a verb meaning to set the ship on the sea floor, or practically there.
Echinoderm