To make this mission playable with SCXIIc, the kilos should be replaced by submarines that have no surface missiles onboard.
As i am not used to SCXIIc at all, i have no idea whatever weaponry each SCXIIc submarines come equipped with (and i have not seen anything in the mission editor allowing you to remove some weapons from an unit you place on the map), so i will not do it.
I think it would be definitively the solution for SCXIIc users, as if an enemy sub has surface missiles in its stock, it will destroy the tanker in less than 15 minutes after the mission start while playing with SCXIIc installed.
And this even if you put the tanker very far from the mission area.
But for people playing without SCXIIc, if you want to take your time to hunt every enemy kilos before the tanker arrive in danger zone, get this edited version of the mission :
http://files.filefront.com/SM01edite.../fileinfo.html
And place the file SM01 Super Escort Hunter.ms (extracted from the SM01edited.zip you just downloaded) in your ..\Sub Command\Scenario\ folder
Don't worry it replaces nothing as it is named differently so you can keep the original mission and this one in the same place.
The only change of that mission is that the Super Tanker starting location is at the Singapore harbor, located at 17 nautic miles from the strait entrance and so the danger zone for it.
Additionally i lowered your sub starting speed from 9 to 7 , preventing it to cavitate as soon as the mission begin.
This gives you enough time to hunt every kilos patrolling the strait, especially if you don't use the AI crew that locate hidden subs a bit too easily in my opinon.
If you like to take your time finding yourself the enemy on your sonars, this edited version of the mission is more interesting as you don't have to rush hoping none will destroy the sub before you find them.
But remember that, while you have enough time to hunt (i tested the mission and completed it by sinking 2 kilos that i managed to locate by sonar without AI crew) with the 17 nmi advance on the main ship, the super tanker is going at a speed of 11 and more, so you have time, but you can't sleep
