Dee,
I have personally not heard of any stories of
apparitions in the North Atlantic, although James
Cameron admitted that while filming his movie
several years ago, one could feel the 'energy'
(using this term as he put it) of the Titanic,
realizing he was at 'the spot' where the tragedy
took place. Bob Ballard also says that 'you feel
it', but you also need to know where they're
coming from when they make these statements.
The only documented reference to any use of
Titanic and 'ghost ship' in the same sentence was
that Captain Rostron of the
Carpathia was
contacted later in the morning of April 15, 1912
by the Olympic, Titanic's nearly identical sister
ship, with the suggestion that
Carpathia,
overloaded with survivors, transfer the Titanic's
passengers to Olympic, which could handle the
complement. Rostron did not like the idea of
making the passengers endure another transfer at
sea, and the sight of the Olympic on the horizon
would be like a 'hideous ghost'. He told Olympic
to stay out of the area.
As for anything else, it is up to the observer to
choose which to believe and which to dismiss as
'urban legends', for lack of a better phrase.