Paul Douglas as Calvin B. Marshall, the American

Alex Mackenzie as Captain McTaggart, the Skipper

James Copeland as The Mate

Abe Barker as The Engineer

Tommy Kearins as Doogie, the Wee Boy

Hubert Gregg as Pusey

Geoffrey Keen as Campbell

Dorothy Alison as Miss Peters

Andrew Keir as The Reporter

Meg Buchanan as Sarah

Mark Dignam as The Laird

Jameson Clark as Dirty Dan

Moultrie Kelsall as C.S.S. Skipper

Fiona Clyne as Sheena

Sheila Shand Gibbs as Barmaid

Betty Henderson as Campbell's Secretary

Russell Waters as Hailing Officer

Duncan Macintyre as Hailing Officer

Roddy McMillan as Inverkerran Driver

Jack Macguire as Highland Innkeeper

John Rae as The Constable

Jack Stewart as Skipper

Eric Woodburn as Skipper

Douglas Robin as Inspector

R. B. Wharrie as Inspector

Catherine Fletcher as Postmistress

William Crichton as Harbour Master

Andrew Downie as Aircraft Pilot

Herbert Cameron as Gillie

Gilbert Stevenson as Davy MacDougall

David Cameron as Hired Car Driver