In respect of a parallel canal, yes there is one but it doesn’t cover the full length of the canal at the moment, the section with the affected grounding is only single, the parallel section to it has yet to be built, so traffic is definitely halted.
Been through the Suez a number of times and every ship transiting has to take on a pilot before entering the canal, so responsibility for the mishap could be joint between the pilot and helmsman.
The canal was closed for a considerable time in 1957 when it was nationalised by Egypt and we went to war over it. I was on one of the first ships to transit when it reopened, there were quite a number of ships that had been blown up and were pulled to the side of the canal to allow ships to start reusing it.
In 1967 as a result of the June 67 war with Israel, the canal was again closed for a considerable time, unfortunately a number of ships were trapped in there. I was in Trucial Oman at the time and a number of parcels that I was waiting for were trapped as well on board ships carrying mail, I never did receive the parcels so who knows where they ended up. Dave W