roman marine

[Quintus Aurelius Lepidus]

i have a question regarding the roman marines of the classis germanica. i've built myself a marine costume for reenacting but one question remains unanswered.

i'm wondering if they wore a hamata during service. i see most that most reenactors wear a hamata when they play a marine. however, i'm really asking myself if this is historically correct. i really wonder because they might sink with it...

does somebody have a clue on this one?