John Wayne as Lt. Cmdr. Wedge Donovan

Susan Hayward as Constance Chesley

Dennis O'Keefe as Lt. Cmdr. Robert Yarrow

William Frawley as Eddie Powers

Leonid Kinskey as Johnny Novasky

J.M. Kerrigan as Sawyer Collins

Grant Withers as Whanger Spreckles

Paul Fix as Ding Jacobs

Ben Welden as Yump Lumkin

William Forrest as Lt. Tom Kerrick

Addison Richards as Capt. Joyce

Jay Norris as Joe Brick

Duncan Renaldo as Construction Worker at Party

Abdullah Abbas as Construction Worker (uncredited)

Lee Adams as Construction Worker (uncredited)

Joel Allen as Coxswain (uncredited)

Roy Barcroft as Seabee Barcroft (uncredited)

Roy Brent as Construction Worker (uncredited)

Joe Brooks as Pilot (uncredited)

Charles D. Brown as Capt. Squires (uncredited)

George Bruggeman as Seabee (uncredited)

Wheaton Chambers as Navy Observer (uncredited)

Roy Darmour as Officer (uncredited)

Kenne Duncan as Construction Worker (uncredited)

Jean Fenwick as Capt. Joyce's Secretary (uncredited)

Terry Frost as Orderly (uncredited)

Gene Gary as French Construction Worker (uncredited)

Bud Geary as Construction Worker (uncredited)

Ernest Golm as Van Pelt (uncredited)

Kit Guard as Construction Worker in Shelter (uncredited)

Eddie Hall as Man Walking to File Cabinet (uncredited)

William Hall as Swede (uncredited)

Alex Havier as Japanese Soldier (uncredited)

Herbert Heyes as Capt. Millard (uncredited)

Reed Howes as Reporter (uncredited)

Robert Katcher as Japanese Soldier (uncredited)

Nora Lane as Kitty - Secretary (uncredited)

James B. Leong as Japanese Officer (uncredited)

Jung Lim as Japanese Officer (uncredited)

Beverly Lloyd as Chorine (uncredited)

Tom London as Johnson (uncredited)

Clarence Lung as Japanese Officer (uncredited)

Adele Mara as Twinkles Tucker - Jitterbugger (uncredited)

Frank Marlowe as Construction Worker Who Dies (uncredited)

LeRoy Mason as Jonesey (uncredited)

Harold Miller as Lt. Cmdr. Stewart (uncredited)

Charles Mitchell as Radioman (uncredited)

Al Murphy as Costruction Worker (uncredited)

Forbes Murray as Navy Surgeon (uncredited)

Jack O'Shea as Arriving Construction Worker (uncredited)

Hugh Prosser as Seabee (uncredited)

Joey Ray as Construction Worker (uncredited)

Jeffrey Sayre as Lt. Cmdr. Kane (uncredited)

George Sherwood as Lieutenant Commander in Chartroom (uncredited)

Tom Steele as Seabee (uncredited)

Larry Stewart as Seabee (uncredited)

Clarence Straight as Signalman (uncredited)

Charles Sullivan as Construction Worker (uncredited)

Ben Taggart as Aircraft Carrier Captain (uncredited)

Hal Taliaferro as Lt. Cmdr. Hood (uncredited)

Chief Thundercloud as Indian Seabee (uncredited)

Charles Trowbridge as Randolph (uncredited)

Billy Wayne as Spec - Reporter (uncredited)

Crane Whitley as Lt. Cmdr. Hunter (uncredited)

Robert J. Wilke as Arriving Construction Worker (uncredited)

Buddy Wilkerson as Gunner (uncredited)

John James as Meteorological Officer (uncredited)

Walter Bacon as Bartender (uncredited)