The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'RUNNING JACK: 50's, 60's. Has an unusual gait and a big singing voice. Tolerated by the boaties because of his vast knowledge of the sea and his expertise with all kinds of boats.
'PAUL TURNER: Early 30's. Good-looking, well off, but unlucky with women.
'TRIN: Late 20's. Attractive, estranged wife of Turner.
'RICHARD CARTER: 30's. Can afford an expensive boat because he has a rich mother.
'KEVIN BOURKE: 30's. An artist, but doesn't look the arty type. The exact opposite, in fact.
'POLICEWOMAN JILL CREGAN: Mid-20's. Beautiful. A Senior Detective with the Drug Squad.
'HOPKINS: Late 30's. One of Wilson's customers. Must be able to row an inflatable rubber dinghy.
'RESIDENT (MR. WITHERS): Middle-aged. Indignant. Disturbed by Running Jack's singing.
'LICENSEE (STAN): Brisk, efficient proprietor of the of the "Mariner's Retr [sic]
'DAVE WILSON: About 30. Good seaman. Successful drug smuggler till his death.
'BETTY: Two scenes. Gum-chewing factory worker.
'TWO BOATIES:
'UNIFORM POLICEMAN'.