- fix udaloy 89
- add CV arkhangelsk, modernized systems and new airwing with modern weapons as of 1990 (basically cooler kuznetsov without the flankers)
- add new Ka-27PK to all later ships, has FLIR and new sonobuoys alongside ATGM/ASMs
- victor 3 improved with both S-10 granat and 3M54-1 kalibr (placeholder for 3M51 alfa) and new torpedoes
- fix issues with DST, UGST, APR-3
- victor 1/2/3 from base game now with USET and TEST torpedoes and MG-74 + RPK-6 for vic 2 and 3
- tarantul 3.5 (mix of 3 and 4, with P-105 and kortik)
- yankee notch with S-10 granat and USET-80K
- sovremenny 956A names
- charlie I/II upgraded sonar and torpedo loadouts
- profiles for new units
- new electronics masts on all submarines (ESM, RDR, HF/DF)
- new earlier torpedoes, SAET-60M, 53-65MA, RPK-2 (SS-N-15 w/ AT-1)
- remove offensive jamming from anti ship missiles as it was causing extremely unpredictable jamming behavior, back to defensive only with high values
- R-73A for Ko-45 and MiG-23AM
- P-800 for Ko-45 (Kh-61) and 670.4M Charlie II
- add terrain follow flight for granit
- rework AAMs, IR missiles now can only be fired within seeker range, R-40s are more realistic now
- add P-120M on charlie II class
- tweak sonar values of surface ships, slightly higher now
- preliminary stat adjustments for upcoming PLA weapons
- fix bug with 9M38M1 and 9M317 trajectory
- add Kh-15P aero-ballistic ARM
- add land attack mode to Kh-15S aero-ballistic missile
- add unique FCRs for SA-N-12 platforms, upgraded launchers with 4 second reload
- fix SAMs on some of the older type ships
- add air search radar to tarantul series
- rebalance torpedo countermeasure values
- nerf CIWS performance against missiles and aircraft
- nerf gun performance against missiles
- marginally increase RBU performance against torpedoes
- tweak flight profile of kalibr and granat

small patch
- 9M330 min alt is now fuze distance of 5 meters
- add entries for APR-3, DST, UGST, TEST-71MK, USET-80K
- add MG-74 (nearly guaranteed decoy chance against worse torpedoes)
- tweak saturation values of certain high end missiles
- loadouts of oscar class (1990) changed to reflect above additions
- slightly buff shipboard sonars, un-kneecap active ranges
- tweak ranges of other sonars, generally more gradual progression with upgrades and successors

differentiate udaloy, ensure all missions can load udaloy

maintenance patch preparing for future work
- add compatibility checker versions and support for semantic versioning
- remove all base-game ship patches and loadouts, will be replaced by specific year-variants
- to compensate, some missiles have their default versions upgraded to modern standards:
- > Volna to Volna M (V-601)
- > Osa-M to Osa-MA (9M33M3)
- > Shtorm to Shtorm-M (V611)
- fix some problems with udaloy and sovremenny, clarify the years and versions
- tweak all of the jammers, rebalance SPO RWR sets to realistic angle detection abilities
- fix Ka-27 loadouts and meshes
- terminal altitude of all sea-skimming missiles implemented, they maintain a proper altitude for the entire terminal flight

preliminary changelog with lots of undocumented changes
- new textures for Kh-35, Top Plate
- new versions for udaloy, sovremenny
- new Atoll textures
- use domestic names for all weapons
- new torpedoes, new ASMs, new balancing for missiles across the board

add:
- new SS-N-2 variants
- SS-N-3B for kynda
- SS-N-9 group guidance (up to eight)
- new tweaks for AAMs
- add SA-N-1 lineage, A B C and D with increasing performance

change:
- new CM/ECM resistance values for all weapons
- tweak performance of high end anti ship missiles
- tweak PKs of SAMs
- fix carrier flight patterns

sorry for the delay, big update was hopefully worth the wait!
- add udaloy 1990 with Kortik CIWS, 9M331, and MR-750 Top Plate (thanks to @Cookiesaurus for the ship!)
- add specific kirov variants for Kalinin, Frunze, Andropov (and Pyotr Velikiy) with Kortik CIWS (thanks to @FTC for the CIWS and launchers!)
- change current rkr_frunze to be a generic fictional variant with all of the proposed upgrades applied to the hull, and add a 1994 variant as well
- add SA-N-20B (48N6D with 210km range), SA-N-11 (9M311 Kortik), SA-N-9A (9M331 Kinzhal), SS-N-22A (3M82 Moskit), SS-N-3B (3M44 Progress)
- add rear SA-N-9 VLS to rkr_frunze (hereforth referred to as dzerzhinsky) and rear 30N6 tomb stone radar
- add MGK-500 Shark Tail towed sonar array to Oscar II sub
- refactor oscar II acoustics
- fix echo II names for subs
- add early build of AAM refactor
- rebalance all SAMs (added midcourse guidance to SA-N-6/20)
- fix targeting on many missiles
- change SS-N-22 flight profile, halved range but no high altitude profile, missile is now 3M80
- fix P-500 seeker not detecting frigate and smaller size targets
- lower top steer minimum altitude
- fix AS-4 variant names
- 650mm 65-76 torpedo 50nm range
- SS-N-16 RPK-6 55nm range (with UGMT-1M improved torpedo)
- rebalance all guns against air and missile targets, more consistent performance

hopefully fix lingering bugs with submarines

add oscar-2 class submarine, fix (maybe) group guidance anti ship missiles, fix AS-4 and AS-6 flight profile, dramatically increase SAM PKs, fix SS-N-16 range and add UGMT-1M

fix 30N6 radar gain