The ITF union and the Joint Negotiating Group (JNG) of shipowners have united in a call for more protection for vessels in the Middle East Gulf.

The two were reacting to the apparent torpedo and mine attack on Frontline and BSM tankers off Iran on Thursday that left the vessels abandoned and drifting.

ITF seafarers’ section chair David Heindel said: “Our thoughts go out to the seafarers involved in the incidents, and of course their families.

"We also urge the naval forces to extend their protection to all ships transiting the area and call for a political solution to ensure seafarers and ships’ safe passage.”

He added: “Luckily the 44 seafarers were rescued, and no lives were lost. We commend all involved in the prompt intervention and rescue of the 44 seafarers, but we have grave concerns over the safety of the ships transiting in this area.”

JNG chairman Captain Koichi Akamine added: "We are quite concerned about these incidents and we’re following the situation closely.

"However, it would be unwise to come to any premature conclusions before receiving more information on these incidents from reliable sources."

He advised all vessels transiting the Straits of Hormuz and operating there to follow safe transiting procedures, increase vigilance, implement security measures ISPS Level 2 equivalent, report all incidents and take extra care of crew and cargo.