• 
  Freema Agyeman

  Shelly Periwinkle
• 
  Bernard Cribbins

   Old Jack (13 episodes, 2013-2014)
• 
  Janine Duvitski

   Emily Scuttlebutt (13 episodes, 2013-2014)
• 
  Paul Hawkyard

   Ernie Starboard (13 episodes, 2013-2014)
• 
  Helen Lederer

   Miss Bowline-Hitch (12 episodes, 2013-2014)
• 
  Nadine Marshall

   Sam Spinnaker (13 episodes, 2013-2014)
• 
  Don Gilet

  Captain Periwinkle
• 
  Scuzz

   Salty the Dog (11 episodes, 2013)

• 
  Bernard Nagle

  Grandpa Pops
• 
  Orla Poole

  The Moon Maiden
• 
  Isabelle Hodnett

  Olive
• 
  Bobby Page

  Little Jack
• 
  Carolina Main

  Sailor Sue
• 
  Rory Sandy

  Pip
• 
  Coral Mason

  Little Sailor Sue

• 
  Sam Benjamin

  Young Jack
• 
  Archie Hawkyard

  Little Ernie