詹姆斯·凯恩

James Caan

饰：Cmdr. Richard Bolton, RNVR

David Sumner

David Sumner

饰：Lt. Davies R.N.V.R

Norman Bowler

饰：Sub-Lt. Pennington, RN

Brian Grellis

Brian Grellis

饰：CPO Barquist

Paul Young

饰：Leading Seaman Quentin

William Dysart

饰：Lt. Robert Talbot Gogan R.N.R.

John Kelland

饰：Sub-Lt. Keith Willis

Kenneth Farrington

饰：CPO Boker Knowles

Keith Alexander

饰：Sub-Lt. X-3

Carl Rigg

Carl Rigg

饰：CPO Norman Kennedy

Steve Kirby

饰：Leading Seaman X-2

尼克·泰特

Nick Tate

饰：Leading Seaman X-1 (as Nicholas Tate)

George Pravda

George Pravda

饰：Capt. Erlich of the Lindendorf

Diana Beevers

Diana Beevers

饰：WRNS Officer

鲁珀特·戴维斯

Rupert Davies

饰：Vice-Adm. Redmayne

Hans De Vries

Hans De Vries

饰：German Lieutenant

保罗·汉萨德

Paul Hansard

饰：Cmdr. Steiner

George Roubicek

George Roubicek

饰：Redmayne's Flag Officer

Desmond Jordan

饰：Naval Doctor (uncredited)

Dennis Mayers

Dennis Mayers

饰：Sub-Lieutenant on X-1 (uncredited)

Richard Steele

Richard Steele

饰：Captain in Redmayne's Office (uncredited)