The Armed Merchant Cruiser (A.M.C.) - During
the two World Wars most of our major shipping companies had
large vessels requisitioned by the naval authorities for service
as troopships, hospital ships or armed merchant cruisers. The
Union Castle Line's Pretoria Castle, which was being built when
the Second World War broke out, was quickly converted into an
aircraft carrier. An A.M.C was fitted with medium sized guns
and frequently used for sea patrols and assisting regular naval
ships to enforce blockades. They were used extensively during
the First World War for a variety of purposes but, because of
their weak armament, lack of armoured protection and large target
area for enemy gunfire, their value to naval warfare lessened
and by the middle of the Second World War they had been completely
withdrawn for use in other roles. During both World Wars the
German Navy used armed merchant cruisers extensively to attack
allied shipping. On the 14th September 1914 the Cunard ship
Carmania sank the German A.M.C. Cap Trafalgar in the South Atlantic.
Another well-known British A.M.C was the Jervis Bay which fought
a notable convoy action in 1940.
A CAMSHIP was, in the Second World War, a
merchant ship fitted with a catapult with which to launch a
fighter aircraft. They sailed in the ordinary way with a convoy
and their purpose was to provide anti-aircraft protection against
attack from the air. The camship was intended principally as
an answer to the German long-range Focke-Wolf aircraft based
in western France which could attack and shadow convoys a long
way out in the Atlantic. The fighter from the camship could
not, of course, land on board again after being catapulted,
and the pilot saved himself by ditching his aircraft as close
as possible to a merchant ship so that he could be picked up,
the aircraft being abandoned. The name came from the initial
letters of catapult aircraft merchant ship.
The R.M.S Britannia, was a 1,156 ton wooden
paddle steamer with an overall length of 207 feet. Together
with the Acadia, the Caledonia and the Columbia, she was ordered
by Samuel Cunard when he founded the Cunard Line in 1840. Following
her maiden voyage from Liverpool to Boston she returned with
sixty three passengers and completed the crossing in 15 days.
During one winter voyage she became trapped by ice in Boston
and, to ensure that she sailed on time, the local people cut
a seven mile channel through the ice to enable her to reach
the open sea.
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