A Saro London flying boat from Gibraltar - based No. 202 Squadron RAF alighted in an attempt to rescue survivors .
Was unable to take - off again , and was towed back to Gibraltar by Douglas as she returned the survivors to land .
A Saro London flying boat from Gibraltar - based No. 202 Squadron RAF alighted in an attempt to rescue survivors , but was unable to take - off again , and was towed back to Gibraltar by Douglas as she returned the survivors to land .