I drove my weight on it from above and bored it home
as a shipwright bores his beam with a shipwright's drill
that men below, whipping the strap back and forth, whirl
and the drill keeps twisting faster, never stopping –

What is Odysseus attempting to do in this passage?

Odysseus is attempting to hold onto a tree branch while waiting for his raft to emerge from Charybdis.
Odysseus is attacking Polyphemus by staking him in the eye.
Odysseus is repairing his ship after withstanding a violent ocean storm.
Odysseus is teaching his crew how to fight in case the other Cyclopses attack them.