Design of an S-boat would be similar to a 688.The Bow array would be in a watertight area.They were not originally fitted with a reelable towed array and had clip-on ones instead.The Bow sonar would give her eyes and ears forward and without them she would be at a disadvantage submerged.It would not affect her ability to navigate on the surface.Problems are going to be logistical with regards to repairs.I said earlier that Gibraltar is the probable destination,but this will seriously affect the relationship with the Spanish neighbours.
Another source suggests that the Red Sea is very well mapped underwater, and this may have been a navigational error.
