I can only advise that Askelon entry is very shallow and narrow, we found the Israeli sailors we met very helpful and welcoming - but the authorities treat everyone with suspicion.
We sailed the coast both ways with the East Med Rally in 2006 and the Israeli Defence Force ensured we only sailed daylight hours in their territory using fast patrol boats (which you can't pick up on radar) and far ranging shore based radar
to track us from first approach right through to final departure.
When underway down and up the coast we were not allowed inshore except down 90* corridors to and from the four ports
we visited, only relaxing that and allowing us to cut a corner when we had a problem resulting in a late night arrival into that tricky harbour entrance.
Also be aware if you go further south, there is a gas platform almost directly off the border with the Gaza Strip......its not on any chart we got hold of........ but suspect if you get near it you'd have patrol boats all over you.