[8] hundruð (n. acc. pl.) ‘hundred’: Rarely, the n. noun hundrað is used as an indeclinable adj., which explains the variant hundrað (so FskBˣ, FskAˣ; see ANG §452 and Anm.). The numeral most likely denotes the ‘long hundred’ (= 120), and ‘six hundred ships’ would be more accurately rendered as ‘720 ships’.