Guest Stars Eric Grove as Himself (Naval Historian) Stephen Burke as Himself (Author) Jann Witt as Himself (Historian) Runar Lia as Himself Fredrik Soreide as Himself David Mearns as Himself (Shipwreck Hunter) Andrzej Słaby as Himself (Hydrographer) Adam Olejnik as Himself (Author) Innes McCartney as Himself (Marine Archaeologist)