Captain E. V. Kinross R.N. / Captain 'D'
Ordinary Seaman Blake / Shorty Blake
Chief Petty Officer Hardy / Walter Hardy
Mrs. Kinross / Alix
Freda Lewis / Freda
Mrs. Hardy / Kath
No. 1
Flags
Guns
Torps
Midshipman
Engineer Commander
Pilot
Doc
Sub
Sub-Lieutenant R.N.V.R.
Secco
Brodie
Joey Mackeridge
Young Stoker
Edgecombe
Reynolds
Parkinson
Fisher
Moran
Coombe
Hollett
Posty
Coxswain
Commander Spencer
№ 1. "Tremoyne"
Colonel Lumsden
Jasper
Bobby Kinross
Lavinia Kinross
Mrs. Blake
Mrs. Lemmon
Maureen
Mrs. Macadoo
Mrs. Farrell
Nell Fosdick
Emily
Barmaid
Mona Duke
Mr. Blake
Uncle Fred
Albert Fosdick
May Blake
Nurse
Photographer
Mr. Satterthwaite
Freda's Baby
Narrator (voice) (uncredited)