//================================================================================
public void DeleteOffhireDetail(OffhireDetail offhireDetail)
{
offhireDetailRepository.Delete(offhireDetail);
}
//================================================================================
public OffhireDetail AddDetail(OffhireDetail offhireDetail)
{
this.validateNotToBeSubmitted();
this.validateNotToBeCancelled();
this.OffhireDetails.Add(offhireDetail);
return offhireDetail;
}