1600n
Insufficient information, but at a guess: the displacement?
The weight of an inflatable raft depends on its size and quality. Small rafts may weigh about 20 pounds while a large one could weigh 200 to 300 pounds.
Wildebeest (42" to ride with adult; 48" to ride unaccompanied by adult; riders' maximum total weight must not exceed 800 pounds per 4-passenger raft; maximum 4 riders per toboggan-style raft) Height is measured with shoes off.
The opposite of the noun raft could be "submersible" which would keep you under the water rather than above. Or possibly "ballast" (weight to keep you underwater).More arcane would be "pool" which is a water above a dry surface, while a raft is a dry place above a water surface.*The less frequent use of raft to mean a large unspecified number (e.g. a raft of problems) could have the antonyms few or countable or numerable.
They raft.
Types of raft foundation are 1. Solid slab raft 2. Beam and slab raft 3. Cellular rafts
The raft is breaking up, sir! Let's jump onto another raft as soon as we can. That's Tom Sawyer's raft.
type / and type raft
The plural of "raft" is "rafts".
raft concrete
The life raft began to sink.We should make a raft to get across the river.
George Raft is 5' 7".