it increases the needed amount of personnel lost before the emergency jump.
http://forum.astro-galaxy.com/index.php/topic,9008.msg75003.html#msg75003and/or
http://forum.astro-galaxy.com/index.php/topic,8464.0.htmlit allows you to survive in combat longer.
so:
with no EMJO the emergency jump will be at -25.00% (1/4 loss)
MKK CIV 50QP (-136.75%)
MK XXXIII 25QP (-45.00%)
MK XXII 20QP (-36.25%)
the maximum is -95.00%
(edit for this announcement)
...
1. A Travelers Aid Society advisory has been issued for travel into and through the Feenamint Cluster. The Treasure Ship 'Dinkydau' has been reported missing. There are also signs of DidiMau insurgents operating in the area. Caution is advised...