Naglfar is the ship made from the fingernails and toenails of those who died outside of battle. During Ragnarök, it is foretold that the Jotunn and dishonorable dead will sail it into battle against the gods.

Magnus Chase and the Gods of Asgard

The Sword of Summer

Loki takes Magnus Chase to the ship and explains it's purpose to him. Magnus first assumes that the nails are iron nails, but Loki corrects him by telling him that Naglfar is actually made of finger and toe nails. People used to burn nails but now they don't so it creates the self-building ship. 

The Hammer of Thor

Helgi informs Magnus and his friends that Loki plans to sail the ship of nails in the middle of summer. 

The Ship of the Dead

Magnus,Blitzen, Hearthstone, T.J., Mallory, Halfborn, Sam, and Alex sail to the boarder of Niflheim and Jotunheim to keep the ship from launching and succeed.


There have been many disputes on whether or not nagi- means "nail", but, instead, is a variant of the Old Norse word nár, which means corpse. [1]