Most of the Bowdlerization is obvious.

                           Serafina

1. In Callao there lives a whore whose name is Serafina.    [in Peru]
        Serafina, Serafina.
    She fucks all night and sleeps all day at the old Calle marina.
        Serafina, oh Serafina.

2. She's queen of all the whores that work down at the old casino.
        Serfina etc.
    She used to screw for monkey nuts, but now she fucks for vino.
        Serfina etc.

3. Oh, Serafina's got no drawers, I've been ashore and seen her.
    She's got no time to put 'em on, that hard-fucked Serafina.

4. She guzzles pisco, beer and gin; on rum her mum did wean her.
    She smokes just like the chimney stack on a PSNC steamer.

5. She'll claw and bite and kick and scratch when in the old arena.
    She'll rob you blind if she gets the chance, that dirty she-hyena.

6. Oh, I was young and in my prime when I first met Serafina.
    But the next morning when I woke up I wished I'd never seen her.

7. For I was robbed, my gear was gone, and so was Serafina.
    She'd run off with a Dago man who played the concertina.

8. She stole my watch, she stole my cash, that lousy Serafina,
    She left me with an aching head and a dose of gonorrhea.

9. Well, I fucked the whores in Callao and then the ones in Lima.
    But the randiest whore I ever fucked was the lovely Serafina.

From Salty Dick's Uncensored Sailor Songs
Collected, researched and performed by Richard Docker, Ph.D
(Correlated by Jerry Bryant)                

See Hugill, Shanties from the Seven Seas, pp 302-3

Verse 8., Abby Sale & Sherry White Lea. Not sanctioned by Salty Dick.

Pisco= Peruvian national liquor distilled from fermented grape juice. Some concoctions of it said to be excellent paint remover.

PSNC: Pacific Steam Navigation Company, set up in 1840 to run steamer liners on the west coast of South America. Later ran cargo Australia-Peru and then oil. It shut down in 1985

Monkey nuts= peanuts (perhaps) [thanx GUEST,Johnnie L]