In 1912, Mersey received his greatest fame when he was appointed by
Lord Loreburn, the
Lord Chancellor in the government of
H. H. Asquith, to head the inquiry commission into the sinking of RMS
Titanic. There was some criticism of his handling of the inquiry. Some felt that he was biased towards the Board of Trade and the major shipping concerns and cared too little about finding out why the ship sank. In 1998, the historian Daniel Butler described Mersey as "autocratic, impatient and not a little testy" but noted the "surprising objectivity" of the inquiry's findings. However,
Peter Padfield later concluded that there had been "crazy deductions, distortions, prejudice, and occasional bone-headed obstinacy of witnesses and the court". In 1913, Mersey presided over the
International Convention for the Safety of Life at Sea and added three more maritime inquiries to his résumé with his heading of the inquiries into the sinkings of RMS
Empress of Ireland (held in
Canada in 1914) and
Falaba and the wartime RMS
Lusitania in 1915. About the last, Mersey is among those suspected by conspiracy theorists of a cover-up. His biographer Hugh Mooney wrote that such suspicions are wholly conjectural, but "the conclusion of the inquiry (which blamed Germany for the tragedy without reservation) was without doubt politically convenient". During the first part of the war, Mersey also worked in the
Prize Courts, adjudicating seized cargo from the
British blockade. This included the cases of the
Wilhelmina (1915), the Roumanian (1916), and the Odessa (1916). Mersey was raised in the peerage from baron to
viscount that year. ==Later life==