A memorial is being held to commemorate the 60th anniversary of the sinking of the MV Princess Victoria.
133 lives were lost when the ship sank on 31st January 1953 in a severe storm in the North Channel, after leaving Loch Ryan near Stranraer.
Locals will commemorate the disaster with two special services in Stranraer.
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Sandy Murray, of Police Scotland, was was giving evidence at the trial of a bus driver who denies killing Ryan Baird by dangerous driving.
34-year-old Christopher Peck was involved in a head-on crash with a drunk driver. His funeral has taken place in his hometown, Workington.
The arrests come weeks after a much-publicised series of appeals to mark the 30th anniversary of the 18-year-old's death.