So it would seem the Iranians were in close proximity to the tankers and ready to act immediately after the attacks occurred.
The Iranian SAR vessel NAJI10 put out from the nearby Iranian port of Jask so I wouldn't read too much into that. Iranian news was quoted as having said quite a number of the Front Altair's crew were taken into Jask. Meanwhile, it seems neither vessel is going anywhere. Front Altair is showing a speed of 08. knots and the other 0.4 knots.