I don't think there is an antonym for raft. If you tried Dictionary.com, and looked at all the definitions, synonyms and antonyms, and there was no antonym; there probably isn't one.
Yes, tfar
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.
raft concrete
The plural of "raft" is "rafts".
type / and type raft
The life raft began to sink.We should make a raft to get across the river.
The ISBN of The Stone Raft is 0151851980.
The Stone Raft was created in 1986.
Raft - novel - was created in 1991.