The highest level of each cloaking ability is used to get the overall cloaking level of a ship. So you can even do things like have Cloaking Device 3 have level 3 cloaking in all areas, and then have Stealth Armor give up to level 4 cloaking in whichever ability it uses, thus making it possible to have cloaked ships completely undetectable by some of the cloaking types.
The PBW Version of P&N has the most developed cloaking system I have seen thus far.
[ January 28, 2004, 18:12: Message edited by: Imperator Fyron ]