Hi,
yes, it's correct, like blue dolphin said, diving at Hebat Allah wreck is permitted. But since the depth of the wreck requires special diving qualifications and the location is unprotected against wind and waves this site is rarely visited.
For all who like to have some more info about the wreck, go to the page of Red Sea wrecks on GoodDive.com
Hebat Allah Wreck - GoodDive.com
and find a drawing and details about the wreck.
Geli