- Joseph Balderrama
- Â Narrator / ... 16 episodes, 2020-2022
- Kieran O'Brien
- Â Self - Narrator 10 episodes, 2017
- Craig Symonds
- Â Self - Naval Historian 7 episodes, 2017
- Andrew Gordon
- Â Self - Naval Military Historian 6 episodes, 2017
- Eric Grove
- Â Self - Naval Historian 5 episodes, 2017
- Nick Hewitt
- Â Self - Curator, Submarines, Portsmouth Historic Dockyard / ... 3 episodes, 2017
- Andrew Lambert
- Â Self - Naval Historian 2 episodes, 2017
- John V. Quarstein
- Â Self - Director, USS Monitor Center 2 episodes, 2017
- Emily Turton
- Â Self - Skipper, Huskyan Dive Tours 2 episodes, 2017
- Bob Mealings
- Â Self - Senior Curator, Submarines, Portsmouth Historic Dockyard 2 episodes, 2017
- Donald Shannon
- Â Self - Curator, Battleship Cove / ... 2 episodes, 2017
- Stuart Prebble
- Â Self - Author, Secrets of the Conquerer 2 episodes, 2017
- Andy Smith
- Â Self - Ship Manager of USS Texas 2 episodes, 2017
- Chris Wilson
- Â Charles Lightoller / ... 2 episodes, 2020
- Matt Rentell
- Â Admiral Dan Callaghan / ... 2 episodes, 2023
- Julian Gamm
- Â Vasili Arkhipov 1 episode, 2017
- Simon Darwen
- Â Steve Sadlon (radioman LST 507) 1 episode, 2017
- Tony Merritt
- Â Deck Hand 1 episode, 2017
- Alan Watson
- Â Self - Chairman of Medusa Trust 1 episode, 2017
- Christopher Cooper
- Â Self - Curator, HMS President 1 episode, 2017
- Howard Veisz
- Â Self - Mystic Seaport 1 episode, 2017
- Tim Ash
- Â Self - Captain HMS Warrior 1 episode, 2017
- Emily Mayhew
- Â Self - Medical Historian 1 episode, 2017
- Mathew Sheldon
- Â Self - National Museum of the Royal Navy 1 episode, 2017
- Hayley Whiting
- Â Self - RNLI Heritage Archive and Research Manager 1 episode, 2017
- James Wisdom
- Â Self - Local Historian 1 episode, 2017
- William Engdall
- Â Self - Nautilus Veteran 1 episode, 2017
- Chris Ince
- Â Self - Team Leader, The U-Boat Story 1 episode, 2017
- Matt Brenkle
- Â Self - USS Constitution Museum 1 episode, 2017
- Brad King
- Â Self - Curator USS Massachusetts 1 episode, 2017
- Peter Lush
- Â Self - Historian, St. Nazaire Association 1 episode, 2017
- Harry Bennett
- Â Self - Plymouth University 1 episode, 2017
- Kendrick Oliver
- Â Self - University Of Southhampton 1 episode, 2017
- Quentin Rees
- Â Self - Author 1 episode, 2017
- James Booth
- Â Self - D-Day Veteran 1 episode, 2017
- Andrew Baines
- Â Self - Curator, HMS Victory 1 episode, 2017
- Louis Scorzieloo
- Â Self - PT Boat Veteran 1 episode, 2017
- Quentin Snediker
- Â Self - Director of Mystic Seaport 1 episode, 2017
- Simon Mills
- Â Self - Owner, HMHS Britannic 1 episode, 2017
- Joe Cavanaugh
- Â Self - National Museum of the Pacific War 1 episode, 2017
- Cindy Grice
- Â Self - Kathleeen & May Heritage Trust 1 episode, 2017
- Tony Badger
- Â Self - Historian 1 episode, 2017
- Victoria Miller
- Â Self - Curator, HMS Caroline 1 episode, 2017
- Chris Reynolds
- Â Self - Former Torpedo Officer, HMS Ocelot 1 episode, 2017
- Kinlay Frances
- Â Self - Scapa Flow Expert 1 episode, 2017
- Richard Holdsworth
- Â Self - Curator, Chatham Historic Dockyard 1 episode, 2017
- Reginald Preston
- Â Self - Officer in Charge, Nautilus 1 episode, 2017
- Simon Willerton
- Â Self - Guide, HMS Victory 1 episode, 2017
- Wisteria Perry
- Â Self - Mariners Museum 1 episode, 2017
- Liz York
- Â Self - Curator, Historic Collections At Battleship Cove 1 episode, 2017
- Philip Cauley
- Â Self - Titanic Belfast 1 episode, 2017
- Terry Farrell
- Â Self - Local Historian 1 episode, 2017
- Greg Williams
- Â Self - Independence Seaport Museum 1 episode, 2017
- Alex Hildred
- Â Self - Curator, Mary Rose trust 1 episode, 2017
- John Brady
- Â Self - Curator of USS Olympia 1 episode, 2017
- Doug Withey
- Â Self - HMS Medusa 1 episode, 2017
- John Sutton
- Â Self - Owner, B-49 Soviet Submarine 1 episode, 2017
- Jessica Williams
- Â Self - Curator, USS Intrepid 1 episode, 2017
- Taylor Downing
- Â Self - Historian 1 episode, 2017
- Mark P. Baker
- Â Self - Historian 1 episode, 2017
- Jeff Grice
- Â Self - Kathleeen & May Heritage Trust 1 episode, 2017
- Garth Wright
- Â Self - 51st Light Anti Aircraft Regiment 1 episode, 2017
- Chris Holden
- Â Self - Chester Sub Aqua Club 1 episode, 2017
- Clare Hunt
- Â Self - Curator, HMS Trincomalee 1 episode, 2017
- Andrew Hollinrake
- Â Self - Author, HMS Hampshire 1 episode, 2017
- Mark Hirst
- Â Self - Grandson, Walter Hirst 1 episode, 2017
- Tony Farncombe
- Â Self - 13th Lysander Squadron RAF 1 episode, 2017
- Ben Major
- Â American Soldier 1 episode, 2017
- John Pearson
- Â Self - Owner of Valentine DD Tank 1 episode, 2017
- Brian Auer
- Â Self - Historic Ships in Baltimore 1 episode, 2017
- Nick Jellicoe
- Â Self - Grandson of Admiral Jellicoe 1 episode, 2017
- Gerald Feola
- Â Self - Veteran, USS Intrepid 1 episode, 2017
- Lois Langhans
- Â Self - Retired Nurse 1 episode, 2017
- Alexandra Geary
- Â Self - Portsmouth Historic Dockyard 1 episode, 2017
- Duncan Redford
- Â Self - Historian, Portsmouth Historic Dockyard 1 episode, 2017
- Dean Small
- Â Self - Son of Ken Small 1 episode, 2017
- Gary Bell
- Â Self - Class of 1962 1 episode, 2017
- Gary Sterne
- Â Self - Historian & Author 1 episode, 2017
- James Baynes
- Â Self - Royal Corps of Signals 1 episode, 2017
- Richard Basey
- Â Self - Chairman, MTB 102 Trust 1 episode, 2017
- Jeanette Maskell
- Â Syliva Lightoller 1 episode, 2020
- Henry Morris
- Â Francis Drake 1 episode, 2020
- Jim Maidment
- Â Captin Leo Gladwell 1 episode, 2020
- Chris Sheen
- Â Clark V Poling 1 episode, 2022
- Sam Dale
- Â Self 1 episode, 2022
- Artur Novikovas
- Â Eugine F. Clark 1 episode, 2022
- Jack Sewell
- Â Soilder 1 episode, 2023
- Olas Carter
- Â captain Lieutenant William Bligh 1 episode, 2023
- Parks Stephenson
- Â Self 1 episode, 2023
- Paul Sewell
- Â Sailer 1 episode, 2023
- Alex Turner
- Â Alvin Leonard Glatkowski 1 episode, 2023
- Frank Mollenhauer
- Â American Sailor 1 episode, 2023
