been using a USN eng on an IJN ship...and getting same exp as the IJN engineers.

I guess my eng must be japanese-american.

Only doing this as my USN eng needs more experience to catch up to other USN engs.

All the information you've requested is already posted.


More than once actually. 

Sailors receive their normal exp regardless of the nation of the ship they're on. They're affected by all other normal exp modifiers but won't receive less if they're MN on a UK ship or whatever.

Their performance is affected though, I'm not 100% on any of this but I believe that all vets on a sailor only count as experts when on a foreign ship. As well as that, they either work at 50% or 20% of their normal ability based on whether they're on an allied or enemy nations ship. I the Allies are UK, USN and SN, the Axis are KM, MN, IJN and RM. So, a KM sailor would work at 50% on an IJN ship (since they're both Axis) but at 20% on a UK ship (since UK is Allies, not Axis). You can test this pretty simply by checking how much SD is gained by putting the same sailor on various ships.

I break it down by medic.

You can use a KM medic on the KM, IJN, and RM BB6/CV6

You can use a US  medic on the US, UK, and SN BB6/CV6.

You can use either medic on the MN BB6/CV6.

I have tried other nation Engy, and it makes my ship slower . I.E. at least 1 Uk engy can run a dunk at 44knt but if u add other nation Engy it will run 38-40knt. with regards to other sailor, it doesnt affect speed unless it has big weight. So if lvling other nation Engy i will put them in the T slots.