Well I have your answer:

Christopher Lee’s character name is listed as Bill Malloy on the recently updated IMDB page.

Malloy on the series was the manager of the Collins family’s fishing fleet.  He was an old sailor with ties to Burke Devlin and Sam Evans.  He meets a bad end and comes back as a ghost.

So far no word yet on who the original cast is playing (I’m still hoping for salty old sea dog Frid.)

God words can’t describe how excited I am for this.