Welcome!
Well, these are the mods I use currently and I like them very much...
Fall of the Rising Sun Version 1.3
Slow Smoke Version 3
Webster's Ship Manuevering Fix for v.1.4 and v.1.5
Hull Numbers
no trembling water
NEW Real Environment Mod
#1 PE4 Install Main
#2d PE4 Special Effects for TMO 152
#3 PE4 TM Submarine Stock Caustics Rollpitch Deeper
#4 PE4 Ship Debris SH4 w/ Bodies
#5 PE4 Real Reflections for harbour and objects
PE4 High quality bow and stern wakes
PhotoRec Fix TMOall&Stock
Eye Patch for TMO Version 1.7
OPCF v1.2 Green TMO v1.52 (with some personal tweeking)
SH4 Authentic Flags Mod
Extra allied naval bases for SH4 + UMB + TMO v1.7 (v1.0)
TMO+RSRDC missions pack
I'd encourage all of these mods.