Armand Assante (Commander Dwight Towers), Rachel Ward (Moira Davidson), Bryan Brown (Dr Julian Osborne), Jacqueline McKenzie (Mary Davidson Holmes), Grant Bowler (Lieutenant Peter Holmes), Allison Webber (Jenny Holmes), Tieghan Webber (Jenny Holmes), Steve Bastoni (First Officer Neil Hirsch), David Ross Paterson (Chief Wawrzeniak), Kevin Copeland (Sonarman Bobby Swain), Todd MacDonald (Radioman Giles), and Joe Petruzzi (Lieutenant Tony Garcia).