A confined rescue practice takes place at North Tyneside's new offshore training centre.
Rope-access technicians and medics haul a body to safety and try to get the dummy's heart started.
The procedure could be used on offshore rigs. The centre's customers also include Salamis and Nissan.
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Chancellor George Osborne will seek to reassure financial markets on Monday morning following Britain's decision to leave the EU.
Eight crew members had to be rescued from a fishing boat after it started sinking a mile off the coast of Sunderland.
Drivers travelling north or southbound on the A1 near Newcastle and Gateshead are advised to expect delays until Wednesday morning.