 At the end of ther first series, they decided that with the decommissioning of the ship, one of them should transfer to another posting to enable them to start a relationship, and despite it meaning losing his male friends, ET chose to be the one.However Nav insisted that their relationship be kept a secret as she was not ready to go public with the matter.At the start of the second series, the newly commissioned HMAS Hammersley was in need of support with electronics, and so Commander Marshall offered ET the posting.