James Arness ( James Arness )

Kirk Hamilton

Kasey Rogers ( Kasey Rogers )

Elaine Jeffries

Gloria Petroff ( Gloria Petroff )

Janice Jeffries

Bill Kennedy ( Bill Kennedy )

Martin Shannon

Pierre Watkin ( Pierre Watkin )

Magistrate Jeffries

Tom Hubbard ( Tom Hubbard )

John Hartley

Jane Harlan ( Jane Harlan )

Nancy Holden

Tom Monroe ( Tom Monroe )

Merchant Capt. Tallman

Rye Billsbury ( Rye Billsbury )

Pirate Captain Hackett

Fred Kohler Jr. ( Fred Kohler Jr. )

Nat Mercer

Tim Graham ( Tim Graham )

Salty

Richard Bartell ( Richard Bartell )

Mr. Davis

Robert Carson ( Robert Carson )

Naval Capt. Allison

Joey Raye ( Joey Raye )

Charlene Hawks ( Charlene Hawks )

Charles Regan ( Charles Regan )

Don Riss ( Don Riss )

Narrator

James Guilfoyle ( James Guilfoyle )

Dr. Wakeland

Hank Mann ( Hank Mann )

Cap Somers ( Cap Somers )

Guy Bellis ( Guy Bellis )

[Credited, but edited]

Herman Cantor ( Herman Cantor )

Fuller - Sailor