A helicopter was dispatched to airlift the crew off the stricken rig after receiving an SOS call.

Taking turns, they beamed out repeated SOS calls.

Many SOS calls and medical emergencies at sea were handled here until the late 1980s.

The copilot never stopped broadcasting his frantic SOS calls.

The civilian operator who took the SOS call may have heard the voice of her killer.

A further SOS call was made between 16:03 and 16:04 was abruptly curtailed.

The Doctor receives an SOS call which he responds to, and landing where Chisholm fell.

The lack of an SOS call from the aircraft indicated that it had crashed into the sea whilst attempting to fly below the low cloudbase.

Somehow he had been saved, his SOS call had got through in spite of their efforts.

After a while, an SOS call in morse code is received and soon a jetty comes into view.