Nautilus hitting St George with an anchor again

Nautilus whirled the anchor around his head. It had to weigh close to a thousand pounds easy, with another five hundred pounds of chain, and he swung it one-handed like a kid spinning a shoelace. It whooshed through the air like the blades of a massive propeller.
The chain passed and St. George lunged at Nautilus. The merman snapped the chain forward like a whip, smashing the anchor into the hero again. It would’ve crushed a normal man. Turned his rib cage to powder and pulped his insides. It slammed St. George back into the yacht’s bridge. Wood and fiberglass and glass shattered around him. He heard more screams from the people up front, and maybe some more belowdecks.

Excerpt From Ex-Isle, pg 537
Peter Clines
https://books.apple.com/us/book/ex-isle/id989619017