distress signal

According to BBC Turkish, Georgia's aviation authority said the aircraft disappeared from radar without issuing a distress signal.

Prior to that, it accused the Israeli military of "intentionally damaging ship communications, in an attempt to block distress signals and stop the livestream of their illegal boat boarding".

Father-of-five Charles Todd, 73, sent out a distress signal from his yacht on 25 January amid fierce weather brought on by Storm Herminia in the area of the Bay of Biscay.

However, according to local authorities, a distress signal was not received until about 05:30 - a further factor which may have cost lives.

Sea Story, a live-aboard used mainly for maritime activities, sent a distress signal after a large wave crashed into the boat, causing it to capsize.