Two Australian warships, the HMAS Melbourne and the HMAS Voyager, collided off the New South Wales coast.
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Richard Branson's attempt at obtaining the fastest Atlantic crossing ended when his speed boat crashed.
An accidental explosion aboard the USS Enterprise near Hawaii killed 28 people.
The HMHS Britannic, sister to the RMS Titanic, was launched at Harland and Wolff shipyard in Belfast.
The SS Georgiana, the largest ship in the Confederate States Navy, was sunk on her maiden voyage.
The RMS Titanic was launched from Belfast, where it was also constructed.
