Thefirst incident involved an unnamed chemical tanker underway at high speed beingapproached on 23 March in the Red Sea.

Fiveskiffs each with three persons aboard are said to have approached the ship inposition 13° 18'N, 042° 52'E at 06:30 local time.

Theship’s master raised the alarm after which fire pumps were activated and the onboard armed security team took up positions.

Unconfirmedreports say ladders were noticed in two skiffs as they closed to a distance of1nm from the tanker.