So, roll on the Rodney, Repulse and Renown
You can't say the Hood cause the bastard's gone down
Tune, last two lines of The Old Orange Flute

I've a notion this was attached, maybe a chorus but maybe a tag at the end, to some song of the sea, but what I cannot recall at present.

I cannot find the above in Grey Funnel Lines by Cyril Tawney, but he does have several more lines for The Sinking of HMS Hood than are on the webpage Joe gives us.
Not in Shanties and |Sailors' Songs by Stan Hugill either.