Not traditional, but there's also Alan Burbidge's "Sailor's (flag of convenience)alphabet":

Chorus: Oh it's happily and cheerfully and carelessly we
Are a tax loss ashore and a hazard at sea
If we should explode with a bloody great bang
Well, the owners are Greek and they don't give a damn

Now, A's for the anchor of which we are proud
B for your beaches, with filth we will shroud
C is for cycles; the decks we ride round
D for the 'Decca' on the bridge broken down
E for the engine that's likewise gone wrong
F starts the Chief's curse, both vicious and strong
G is the Gulf, where we've picked up our load
While H is our hatred for rules of the road

Kitty