Trying to write a Poseidon Shanty

Need help writing a song on Poseidon, that’s supposed to be like a shanty. Taking inspiration from The Longest Johns version of The Wellerman and Misbehavin’ Maidens song Twiddles. I’m not very ship savvy (pun not intended), nor directly a worshipper of Poseidon, just thought it’d be cool to rwrite this song.

I have part of the chorus I want, it goes:
“Poseidon, King of the Sea;
Send him an offering, for you, and for me;
If we’re going to survive;
We need the sea god on our side.”

Just kinda stuck on what other elements to add, or keynotes I should incorporate