"Lusitania" was scheduled to arrive in Liverpool on 6 March 1915. The Admiralty issued her specific instructions on how to avoid submarines. Admiral Henry Oliver ordered HMS "Louis" and HMS "Laverock" to escort "Lusitania", and took the further precaution of sending the Q-ship HMS "Lyons" to patrol Liverpool Bay. The destroyer commander attempted to discover the whereabouts of "Lusitania" by telephoning Cunard, who refused to give out any information and referred him to the Admiralty. At sea, the ships contacted "Lusitania" by radio but did not have the codes used to communicate with merchant ships. Captain Dow of "Lusitania" refused to give his own position except in code, and since he was, in any case, some distance from the positions they gave, continued to Liverpool unescorted.