Oarlock

The oar fell out of its oarlock.

But, as luck would have it, scarcely had he started to row his boat again when an oarlock broke, and so it took him the best part of an hour to make the trip.

"No motor," Tranny says. "It snag bad." Right. The spiderweb would get wrapped around the propeller. Tranny shows Hiro how to snap zodiac's oars into the oarlocks.