Billy Halop ( Billy Halop )

Billy Adams

Huntz Hall ( Huntz Hall )

Toby Nelson

Gabriel Dell ( Gabriel Dell )

Bilge

Bernard Punsly ( Bernard Punsly )

Butch

Hal E. Chester ( Hal E. Chester )

Swab

Reed Hadley ( Reed Hadley )

Carl Tonjes

William Hall ( William Hall )

Brack Warren

Mary Field ( Mary Field )

Aggie Nelson

John McGuire ( John McGuire )

Tom Adams

Marcia Ralston ( Marcia Ralston )

Leah Carlton

Stanley Blystone ( Stanley Blystone )

Capt. Olaf Nelson

Edward Keane ( Edward Keane )

Elliott Carlton

Richard Alexander ( Richard Alexander )

Jenkins

Ernie Adams ( Ernie Adams )

Zeke

Jack Rube Clifford ( Jack Rube Clifford )

Pug Anderson

Morgan Wallace ( Morgan Wallace )

Capt. Lester

Eddie Dunn ( Eddie Dunn )

Whaler Captain

Forrest Taylor ( Forrest Taylor )

Fenwick the Inventor

Joe Recht ( Joe Recht )

Lug

Richard Bond ( Richard Bond )

Krans

James Blaine ( James Blaine )

Desk Sergeant

Ed Cassidy ( Ed Cassidy )

Guard at Hospital

Jack Cheatham ( Jack Cheatham )

Duke

Dick Curtis ( Dick Curtis )

Mate on the 'Astoria'

Larry Grenier ( Larry Grenier )

Island Guard

Al Hill ( Al Hill )

Speeding Motorist (archive footage)

Jerry Jerome ( Jerry Jerome )

'Astoria' Officer

Guy Kingsford ( Guy Kingsford )

Sven - Whaler Crewman

Jerry Mandy ( Jerry Mandy )

Tony - Grocer

John Merton ( John Merton )

First Island Guard

Jack Mulhall ( Jack Mulhall )

'Dolphin' Radioman

Paul Newlan ( Paul Newlan )

Chris - Second Island Guard

Eddie Parker ( Eddie Parker )

Coral Strand Crewman

Jack Perrin ( Jack Perrin )

Island Guard-Launch Pilot

House Peters Jr. ( House Peters Jr. )

Agent Burke

Anthony Rogers ( Anthony Rogers )

Jim - Police Boat Pilot

Hans Schumm ( Hans Schumm )

Sub Captain

George Sherwood ( George Sherwood )

Island Guard

Mickey Simpson ( Mickey Simpson )

Angry Motorist

Tom Steele ( Tom Steele )

Coral Strand Crewman / Whaler Crewman

Frank Wayne ( Frank Wayne )

Fenwick's Guard

Duke York ( Duke York )

Pete - Whaler Crewman

Bill Hunter ( Bill Hunter )

Policeman

Bill Moss ( Bill Moss )

Joe Pope ( Joe Pope )

Jack Holmes ( Jack Holmes )

Robert R. Stephenson ( Robert R. Stephenson )